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b=dcR4yecOuNIL8BpuGsCaAJniguUMEHZjMhvngKbT9uxzavX20CRAHmFcH7G5ZpK6lX/S9rbHRKa2rHil3/dcH+SS2wGYcFq3FFHIt/UHK57tEtvycsQqSNfJfque1BdBSTCaYWan1aO/j5MSTQL2F8g5k/HZZ8JTFU/RSYGibaQ= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nxp.com; Received: from PAXPR04MB9642.eurprd04.prod.outlook.com (2603:10a6:102:240::14) by AS8PR04MB7733.eurprd04.prod.outlook.com (2603:10a6:20b:288::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7249.34; Mon, 5 Feb 2024 17:33:59 +0000 Received: from PAXPR04MB9642.eurprd04.prod.outlook.com ([fe80::c8b4:5648:8948:e85c]) by PAXPR04MB9642.eurprd04.prod.outlook.com ([fe80::c8b4:5648:8948:e85c%3]) with mapi id 15.20.7249.032; Mon, 5 Feb 2024 17:33:59 +0000 From: Frank Li To: lpieralisi@kernel.org Cc: Frank.li@nxp.com, bhelgaas@google.com, conor+dt@kernel.org, devicetree@vger.kernel.org, festevam@gmail.com, helgaas@kernel.org, hongxing.zhu@nxp.com, imx@lists.linux.dev, kernel@pengutronix.de, krzysztof.kozlowski+dt@linaro.org, krzysztof.kozlowski@linaro.org, kw@linux.com, l.stach@pengutronix.de, linux-arm-kernel@lists.infradead.org, linux-imx@nxp.com, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, manivannan.sadhasivam@linaro.org, robh@kernel.org, s.hauer@pengutronix.de, shawnguo@kernel.org Subject: [PATCH v10 01/14] PCI: imx6: Simplify clock handling by using clk_bulk*() function Date: Mon, 5 Feb 2024 12:33:22 -0500 Message-Id: <20240205173335.1120469-2-Frank.Li@nxp.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240205173335.1120469-1-Frank.Li@nxp.com> References: <20240205173335.1120469-1-Frank.Li@nxp.com> X-ClientProxiedBy: BYAPR07CA0041.namprd07.prod.outlook.com (2603:10b6:a03:60::18) To PAXPR04MB9642.eurprd04.prod.outlook.com (2603:10a6:102:240::14) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PAXPR04MB9642:EE_|AS8PR04MB7733:EE_ X-MS-Office365-Filtering-Correlation-Id: 3b0cdfa8-ca14-487f-e731-08dc2670a33f X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Add 'clk_names' define in drvdata. Use clk_bulk*() api simplify the code. Reviewed-by: Manivannan Sadhasivam Signed-off-by: Frank Li --- Notes: Change from v9 to v10 - fixed missed delete a case, which need failthrough to next one. Change from v8 to v9 - change clks names - Add Manivannan's review tag Change from v7 to v8 - update comment message - using ARRAY_SIZE to count clk_names. Change from v6 to v7 - none Change from v4 to v5 - update commit message - direct using clk name list, instead of macro - still keep caculate clk list count because sizeof return pre allocated array size. Change from v3 to v4 - using clk_bulk_*() API Change from v1 to v3 - none Change from v4 to v5 - update commit message - direct using clk name list, instead of macro - still keep caculate clk list count because sizeof return pre allocated array size. Change from v3 to v4 - using clk_bulk_*() API Change from v1 to v3 - none Change from v8 to v9 - change clks names - Add Manivannan's review tag Change from v7 to v8 - update comment message - using ARRAY_SIZE to count clk_names. Change from v6 to v7 - none Change from v4 to v5 - update commit message - direct using clk name list, instead of macro - still keep caculate clk list count because sizeof return pre allocated array size. Change from v3 to v4 - using clk_bulk_*() API Change from v1 to v3 - none Change from v4 to v5 - update commit message - direct using clk name list, instead of macro - still keep caculate clk list count because sizeof return pre allocated array size. Change from v3 to v4 - using clk_bulk_*() API Change from v1 to v3 - none drivers/pci/controller/dwc/pci-imx6.c | 138 ++++++++++---------------- 1 file changed, 50 insertions(+), 88 deletions(-) diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c index 74703362aeec7..82854e94c5621 100644 --- a/drivers/pci/controller/dwc/pci-imx6.c +++ b/drivers/pci/controller/dwc/pci-imx6.c @@ -61,12 +61,16 @@ enum imx6_pcie_variants { #define IMX6_PCIE_FLAG_IMX6_SPEED_CHANGE BIT(1) #define IMX6_PCIE_FLAG_SUPPORTS_SUSPEND BIT(2) +#define IMX6_PCIE_MAX_CLKS 6 + struct imx6_pcie_drvdata { enum imx6_pcie_variants variant; enum dw_pcie_device_mode mode; u32 flags; int dbi_length; const char *gpr; + const char * const *clk_names; + const u32 clks_cnt; }; struct imx6_pcie { @@ -74,11 +78,7 @@ struct imx6_pcie { int reset_gpio; bool gpio_active_high; bool link_is_up; - struct clk *pcie_bus; - struct clk *pcie_phy; - struct clk *pcie_inbound_axi; - struct clk *pcie; - struct clk *pcie_aux; + struct clk_bulk_data clks[IMX6_PCIE_MAX_CLKS]; struct regmap *iomuxc_gpr; u16 msi_ctrl; u32 controller_id; @@ -407,13 +407,18 @@ static void imx7d_pcie_wait_for_phy_pll_lock(struct imx6_pcie *imx6_pcie) static int imx6_setup_phy_mpll(struct imx6_pcie *imx6_pcie) { - unsigned long phy_rate = clk_get_rate(imx6_pcie->pcie_phy); + unsigned long phy_rate = 0; int mult, div; u16 val; + int i; if (!(imx6_pcie->drvdata->flags & IMX6_PCIE_FLAG_IMX6_PHY)) return 0; + for (i = 0; i < imx6_pcie->drvdata->clks_cnt; i++) + if (strncmp(imx6_pcie->clks[i].id, "pcie_phy", 8) == 0) + phy_rate = clk_get_rate(imx6_pcie->clks[i].clk); + switch (phy_rate) { case 125000000: /* @@ -550,19 +555,11 @@ static int imx6_pcie_attach_pd(struct device *dev) static int imx6_pcie_enable_ref_clk(struct imx6_pcie *imx6_pcie) { - struct dw_pcie *pci = imx6_pcie->pci; - struct device *dev = pci->dev; unsigned int offset; int ret = 0; switch (imx6_pcie->drvdata->variant) { case IMX6SX: - ret = clk_prepare_enable(imx6_pcie->pcie_inbound_axi); - if (ret) { - dev_err(dev, "unable to enable pcie_axi clock\n"); - break; - } - regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, IMX6SX_GPR12_PCIE_TEST_POWERDOWN, 0); break; @@ -589,12 +586,6 @@ static int imx6_pcie_enable_ref_clk(struct imx6_pcie *imx6_pcie) case IMX8MQ_EP: case IMX8MP: case IMX8MP_EP: - ret = clk_prepare_enable(imx6_pcie->pcie_aux); - if (ret) { - dev_err(dev, "unable to enable pcie_aux clock\n"); - break; - } - offset = imx6_pcie_grp_offset(imx6_pcie); /* * Set the over ride low and enabled @@ -615,9 +606,6 @@ static int imx6_pcie_enable_ref_clk(struct imx6_pcie *imx6_pcie) static void imx6_pcie_disable_ref_clk(struct imx6_pcie *imx6_pcie) { switch (imx6_pcie->drvdata->variant) { - case IMX6SX: - clk_disable_unprepare(imx6_pcie->pcie_inbound_axi); - break; case IMX6QP: case IMX6Q: regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR1, @@ -631,14 +619,6 @@ static void imx6_pcie_disable_ref_clk(struct imx6_pcie *imx6_pcie) IMX7D_GPR12_PCIE_PHY_REFCLK_SEL, IMX7D_GPR12_PCIE_PHY_REFCLK_SEL); break; - case IMX8MM: - case IMX8MM_EP: - case IMX8MQ: - case IMX8MQ_EP: - case IMX8MP: - case IMX8MP_EP: - clk_disable_unprepare(imx6_pcie->pcie_aux); - break; default: break; } @@ -650,23 +630,9 @@ static int imx6_pcie_clk_enable(struct imx6_pcie *imx6_pcie) struct device *dev = pci->dev; int ret; - ret = clk_prepare_enable(imx6_pcie->pcie_phy); - if (ret) { - dev_err(dev, "unable to enable pcie_phy clock\n"); + ret = clk_bulk_prepare_enable(imx6_pcie->drvdata->clks_cnt, imx6_pcie->clks); + if (ret) return ret; - } - - ret = clk_prepare_enable(imx6_pcie->pcie_bus); - if (ret) { - dev_err(dev, "unable to enable pcie_bus clock\n"); - goto err_pcie_bus; - } - - ret = clk_prepare_enable(imx6_pcie->pcie); - if (ret) { - dev_err(dev, "unable to enable pcie clock\n"); - goto err_pcie; - } ret = imx6_pcie_enable_ref_clk(imx6_pcie); if (ret) { @@ -679,11 +645,7 @@ static int imx6_pcie_clk_enable(struct imx6_pcie *imx6_pcie) return 0; err_ref_clk: - clk_disable_unprepare(imx6_pcie->pcie); -err_pcie: - clk_disable_unprepare(imx6_pcie->pcie_bus); -err_pcie_bus: - clk_disable_unprepare(imx6_pcie->pcie_phy); + clk_bulk_disable_unprepare(imx6_pcie->drvdata->clks_cnt, imx6_pcie->clks); return ret; } @@ -691,9 +653,7 @@ static int imx6_pcie_clk_enable(struct imx6_pcie *imx6_pcie) static void imx6_pcie_clk_disable(struct imx6_pcie *imx6_pcie) { imx6_pcie_disable_ref_clk(imx6_pcie); - clk_disable_unprepare(imx6_pcie->pcie); - clk_disable_unprepare(imx6_pcie->pcie_bus); - clk_disable_unprepare(imx6_pcie->pcie_phy); + clk_bulk_disable_unprepare(imx6_pcie->drvdata->clks_cnt, imx6_pcie->clks); } static void imx6_pcie_assert_core_reset(struct imx6_pcie *imx6_pcie) @@ -1252,6 +1212,7 @@ static int imx6_pcie_probe(struct platform_device *pdev) struct device_node *node = dev->of_node; int ret; u16 val; + int i; imx6_pcie = devm_kzalloc(dev, sizeof(*imx6_pcie), GFP_KERNEL); if (!imx6_pcie) @@ -1305,32 +1266,20 @@ static int imx6_pcie_probe(struct platform_device *pdev) return imx6_pcie->reset_gpio; } - /* Fetch clocks */ - imx6_pcie->pcie_bus = devm_clk_get(dev, "pcie_bus"); - if (IS_ERR(imx6_pcie->pcie_bus)) - return dev_err_probe(dev, PTR_ERR(imx6_pcie->pcie_bus), - "pcie_bus clock source missing or invalid\n"); + if (imx6_pcie->drvdata->clks_cnt >= IMX6_PCIE_MAX_CLKS) + return dev_err_probe(dev, -ENOMEM, "clks_cnt is too big\n"); - imx6_pcie->pcie = devm_clk_get(dev, "pcie"); - if (IS_ERR(imx6_pcie->pcie)) - return dev_err_probe(dev, PTR_ERR(imx6_pcie->pcie), - "pcie clock source missing or invalid\n"); + for (i = 0; i < imx6_pcie->drvdata->clks_cnt; i++) + imx6_pcie->clks[i].id = imx6_pcie->drvdata->clk_names[i]; + + /* Fetch clocks */ + ret = devm_clk_bulk_get(dev, imx6_pcie->drvdata->clks_cnt, imx6_pcie->clks); + if (ret) + return ret; switch (imx6_pcie->drvdata->variant) { - case IMX6SX: - imx6_pcie->pcie_inbound_axi = devm_clk_get(dev, - "pcie_inbound_axi"); - if (IS_ERR(imx6_pcie->pcie_inbound_axi)) - return dev_err_probe(dev, PTR_ERR(imx6_pcie->pcie_inbound_axi), - "pcie_inbound_axi clock missing or invalid\n"); - break; case IMX8MQ: case IMX8MQ_EP: - imx6_pcie->pcie_aux = devm_clk_get(dev, "pcie_aux"); - if (IS_ERR(imx6_pcie->pcie_aux)) - return dev_err_probe(dev, PTR_ERR(imx6_pcie->pcie_aux), - "pcie_aux clock source missing or invalid\n"); - fallthrough; case IMX7D: if (dbi_base->start == IMX8MQ_PCIE2_BASE_ADDR) imx6_pcie->controller_id = 1; @@ -1353,10 +1302,6 @@ static int imx6_pcie_probe(struct platform_device *pdev) case IMX8MM_EP: case IMX8MP: case IMX8MP_EP: - imx6_pcie->pcie_aux = devm_clk_get(dev, "pcie_aux"); - if (IS_ERR(imx6_pcie->pcie_aux)) - return dev_err_probe(dev, PTR_ERR(imx6_pcie->pcie_aux), - "pcie_aux clock source missing or invalid\n"); imx6_pcie->apps_reset = devm_reset_control_get_exclusive(dev, "apps"); if (IS_ERR(imx6_pcie->apps_reset)) @@ -1372,14 +1317,6 @@ static int imx6_pcie_probe(struct platform_device *pdev) default: break; } - /* Don't fetch the pcie_phy clock, if it has abstract PHY driver */ - if (imx6_pcie->phy == NULL) { - imx6_pcie->pcie_phy = devm_clk_get(dev, "pcie_phy"); - if (IS_ERR(imx6_pcie->pcie_phy)) - return dev_err_probe(dev, PTR_ERR(imx6_pcie->pcie_phy), - "pcie_phy clock source missing or invalid\n"); - } - /* Grab turnoff reset */ imx6_pcie->turnoff_reset = devm_reset_control_get_optional_exclusive(dev, "turnoff"); @@ -1470,6 +1407,11 @@ static void imx6_pcie_shutdown(struct platform_device *pdev) imx6_pcie_assert_core_reset(imx6_pcie); } +static const char * const imx6q_clks[] = {"pcie_bus", "pcie", "pcie_phy"}; +static const char * const imx8mm_clks[] = {"pcie_bus", "pcie", "pcie_aux"}; +static const char * const imx8mq_clks[] = {"pcie_bus", "pcie", "pcie_phy", "pcie_aux"}; +static const char * const imx6sx_clks[] = {"pcie_bus", "pcie", "pcie_phy", "pcie_inbound_axi"}; + static const struct imx6_pcie_drvdata drvdata[] = { [IMX6Q] = { .variant = IMX6Q, @@ -1477,6 +1419,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { IMX6_PCIE_FLAG_IMX6_SPEED_CHANGE, .dbi_length = 0x200, .gpr = "fsl,imx6q-iomuxc-gpr", + .clk_names = imx6q_clks, + .clks_cnt = ARRAY_SIZE(imx6q_clks), }, [IMX6SX] = { .variant = IMX6SX, @@ -1484,6 +1428,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { IMX6_PCIE_FLAG_IMX6_SPEED_CHANGE | IMX6_PCIE_FLAG_SUPPORTS_SUSPEND, .gpr = "fsl,imx6q-iomuxc-gpr", + .clk_names = imx6sx_clks, + .clks_cnt = ARRAY_SIZE(imx6sx_clks), }, [IMX6QP] = { .variant = IMX6QP, @@ -1492,40 +1438,56 @@ static const struct imx6_pcie_drvdata drvdata[] = { IMX6_PCIE_FLAG_SUPPORTS_SUSPEND, .dbi_length = 0x200, .gpr = "fsl,imx6q-iomuxc-gpr", + .clk_names = imx6q_clks, + .clks_cnt = ARRAY_SIZE(imx6q_clks), }, [IMX7D] = { .variant = IMX7D, .flags = IMX6_PCIE_FLAG_SUPPORTS_SUSPEND, .gpr = "fsl,imx7d-iomuxc-gpr", + .clk_names = imx6q_clks, + .clks_cnt = ARRAY_SIZE(imx6q_clks), }, [IMX8MQ] = { .variant = IMX8MQ, .gpr = "fsl,imx8mq-iomuxc-gpr", + .clk_names = imx8mq_clks, + .clks_cnt = ARRAY_SIZE(imx8mq_clks), }, [IMX8MM] = { .variant = IMX8MM, .flags = IMX6_PCIE_FLAG_SUPPORTS_SUSPEND, .gpr = "fsl,imx8mm-iomuxc-gpr", + .clk_names = imx8mm_clks, + .clks_cnt = ARRAY_SIZE(imx8mm_clks), }, [IMX8MP] = { .variant = IMX8MP, .flags = IMX6_PCIE_FLAG_SUPPORTS_SUSPEND, .gpr = "fsl,imx8mp-iomuxc-gpr", + .clk_names = imx8mm_clks, + .clks_cnt = ARRAY_SIZE(imx8mm_clks), }, [IMX8MQ_EP] = { .variant = IMX8MQ_EP, .mode = DW_PCIE_EP_TYPE, .gpr = "fsl,imx8mq-iomuxc-gpr", + .clk_names = imx8mq_clks, + .clks_cnt = ARRAY_SIZE(imx8mq_clks), }, [IMX8MM_EP] = { .variant = IMX8MM_EP, .mode = DW_PCIE_EP_TYPE, .gpr = "fsl,imx8mm-iomuxc-gpr", + .clk_names = imx8mm_clks, + .clks_cnt = ARRAY_SIZE(imx8mm_clks), }, [IMX8MP_EP] = { .variant = IMX8MP_EP, .mode = DW_PCIE_EP_TYPE, .gpr = "fsl,imx8mp-iomuxc-gpr", + .clk_names = imx8mm_clks, + .clks_cnt = ARRAY_SIZE(imx8mm_clks), }, }; 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b=nqbV8WE/lQmguaXFfILPeXV4f62rmQFZ8BFAR3PeHiWm0EynZzvHsEKXRv5ZCC+hxFSV7n7esiFZza93P1fdsFx1o6Q8FX1GHe8nL1fFsxh2M0saBqMcQIZ7mNPTRZH25h6FbEKBjxsM6gNVTpLVa7NehvKuE2L82O4+RmOc00M= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nxp.com; Received: from PAXPR04MB9642.eurprd04.prod.outlook.com (2603:10a6:102:240::14) by AS8PR04MB7733.eurprd04.prod.outlook.com (2603:10a6:20b:288::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7249.34; Mon, 5 Feb 2024 17:34:05 +0000 Received: from PAXPR04MB9642.eurprd04.prod.outlook.com ([fe80::c8b4:5648:8948:e85c]) by PAXPR04MB9642.eurprd04.prod.outlook.com ([fe80::c8b4:5648:8948:e85c%3]) with mapi id 15.20.7249.032; Mon, 5 Feb 2024 17:34:05 +0000 From: Frank Li To: lpieralisi@kernel.org Cc: Frank.li@nxp.com, bhelgaas@google.com, conor+dt@kernel.org, devicetree@vger.kernel.org, festevam@gmail.com, helgaas@kernel.org, hongxing.zhu@nxp.com, imx@lists.linux.dev, kernel@pengutronix.de, krzysztof.kozlowski+dt@linaro.org, krzysztof.kozlowski@linaro.org, kw@linux.com, l.stach@pengutronix.de, linux-arm-kernel@lists.infradead.org, linux-imx@nxp.com, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, manivannan.sadhasivam@linaro.org, robh@kernel.org, s.hauer@pengutronix.de, shawnguo@kernel.org Subject: [PATCH v10 02/14] PCI: imx6: Simplify phy handling by using IMX6_PCIE_FLAG_HAS_PHYDRV Date: Mon, 5 Feb 2024 12:33:23 -0500 Message-Id: <20240205173335.1120469-3-Frank.Li@nxp.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240205173335.1120469-1-Frank.Li@nxp.com> References: <20240205173335.1120469-1-Frank.Li@nxp.com> X-ClientProxiedBy: BYAPR07CA0041.namprd07.prod.outlook.com (2603:10b6:a03:60::18) To PAXPR04MB9642.eurprd04.prod.outlook.com (2603:10a6:102:240::14) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PAXPR04MB9642:EE_|AS8PR04MB7733:EE_ X-MS-Office365-Filtering-Correlation-Id: c260421b-44df-49d0-d697-08dc2670a648 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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This simplifies the code. Reviewed-by: Manivannan Sadhasivam Signed-off-by: Frank Li --- Notes: Change from v8 to v9: - change commit message according Manivannan's suggestion - Add Manivannan's review tag Change from v7 to v8: - renmae IMX6_PCIE_FLAG_HAS_PHY to IMX6_PCIE_FLAG_HAS_PHYDRV Change from v6 to v7: - none Change from v4 to v5: - none, Keep IMX6_PCIE_FLAG_HAS_PHY to indicate dts mismatch when platform require phy suppport. Change from v1 to v3: - none drivers/pci/controller/dwc/pci-imx6.c | 24 +++++++++++++++++------- 1 file changed, 17 insertions(+), 7 deletions(-) diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c index 82854e94c5621..59f117f855c26 100644 --- a/drivers/pci/controller/dwc/pci-imx6.c +++ b/drivers/pci/controller/dwc/pci-imx6.c @@ -60,6 +60,9 @@ enum imx6_pcie_variants { #define IMX6_PCIE_FLAG_IMX6_PHY BIT(0) #define IMX6_PCIE_FLAG_IMX6_SPEED_CHANGE BIT(1) #define IMX6_PCIE_FLAG_SUPPORTS_SUSPEND BIT(2) +#define IMX6_PCIE_FLAG_HAS_PHYDRV BIT(3) + +#define imx6_check_flag(pci, val) (pci->drvdata->flags & val) #define IMX6_PCIE_MAX_CLKS 6 @@ -1277,6 +1280,13 @@ static int imx6_pcie_probe(struct platform_device *pdev) if (ret) return ret; + if (imx6_check_flag(imx6_pcie, IMX6_PCIE_FLAG_HAS_PHYDRV)) { + imx6_pcie->phy = devm_phy_get(dev, "pcie-phy"); + if (IS_ERR(imx6_pcie->phy)) + return dev_err_probe(dev, PTR_ERR(imx6_pcie->phy), + "failed to get pcie phy\n"); + } + switch (imx6_pcie->drvdata->variant) { case IMX8MQ: case IMX8MQ_EP: @@ -1308,11 +1318,6 @@ static int imx6_pcie_probe(struct platform_device *pdev) return dev_err_probe(dev, PTR_ERR(imx6_pcie->apps_reset), "failed to get pcie apps reset control\n"); - imx6_pcie->phy = devm_phy_get(dev, "pcie-phy"); - if (IS_ERR(imx6_pcie->phy)) - return dev_err_probe(dev, PTR_ERR(imx6_pcie->phy), - "failed to get pcie phy\n"); - break; default: break; @@ -1456,14 +1461,17 @@ static const struct imx6_pcie_drvdata drvdata[] = { }, [IMX8MM] = { .variant = IMX8MM, - .flags = IMX6_PCIE_FLAG_SUPPORTS_SUSPEND, + .flags = IMX6_PCIE_FLAG_SUPPORTS_SUSPEND | + IMX6_PCIE_FLAG_HAS_PHYDRV | + IMX6_PCIE_FLAG_HAS_APP_RESET, .gpr = "fsl,imx8mm-iomuxc-gpr", .clk_names = imx8mm_clks, .clks_cnt = ARRAY_SIZE(imx8mm_clks), }, [IMX8MP] = { .variant = IMX8MP, - .flags = IMX6_PCIE_FLAG_SUPPORTS_SUSPEND, + .flags = IMX6_PCIE_FLAG_SUPPORTS_SUSPEND | + IMX6_PCIE_FLAG_HAS_PHYDRV, .gpr = "fsl,imx8mp-iomuxc-gpr", .clk_names = imx8mm_clks, .clks_cnt = ARRAY_SIZE(imx8mm_clks), @@ -1477,6 +1485,7 @@ static const struct imx6_pcie_drvdata drvdata[] = { }, [IMX8MM_EP] = { .variant = IMX8MM_EP, + .flags = IMX6_PCIE_FLAG_HAS_PHYDRV, .mode = DW_PCIE_EP_TYPE, .gpr = "fsl,imx8mm-iomuxc-gpr", .clk_names = imx8mm_clks, @@ -1484,6 +1493,7 @@ static const struct imx6_pcie_drvdata drvdata[] = { }, [IMX8MP_EP] = { .variant = IMX8MP_EP, + .flags = IMX6_PCIE_FLAG_HAS_PHYDRV, .mode = DW_PCIE_EP_TYPE, .gpr = "fsl,imx8mp-iomuxc-gpr", .clk_names = imx8mm_clks, From patchwork Mon Feb 5 17:33:24 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Li X-Patchwork-Id: 196948 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:7301:168b:b0:106:860b:bbdd with SMTP id ma11csp1029922dyb; Mon, 5 Feb 2024 09:35:37 -0800 (PST) X-Google-Smtp-Source: AGHT+IG4r9xmmqUrO78JEmypCNsr2hDysMLRu/9qmOgtfvMae96KbZ7wZYPB5gnTw1dS3Yedhu2+ X-Received: by 2002:a05:6402:70c:b0:55f:cb7a:c9fb with SMTP id w12-20020a056402070c00b0055fcb7ac9fbmr5168edx.3.1707154537185; Mon, 05 Feb 2024 09:35:37 -0800 (PST) X-Forwarded-Encrypted: i=2; AJvYcCWYCCgoGNWosvLh/+UZpZT914hHwN6Yxof9SJWN2BdVPa/PDzx4cuM4X3eqyja2Sneg0O8V2fMaiWQiY1c+RqN4OQYFqg== Received: from am.mirrors.kernel.org (am.mirrors.kernel.org. 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b=Hi/e9GpqaJoRHKPDE863OqAYYtTfZJC1UeSgWp0cAC8Rclcwd3th01JgLc12z/WGCChhy6u8Kk87OQ9827ESjQxR+IZx17OSxqSf8m9JgasUxBRDqcPoZaHmyrD/BmUeXDCznmwXX+G9cSJxwfIHw5jzFirUcCudRy2Ssdco7To= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nxp.com; Received: from PAXPR04MB9642.eurprd04.prod.outlook.com (2603:10a6:102:240::14) by AS8PR04MB7733.eurprd04.prod.outlook.com (2603:10a6:20b:288::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7249.34; Mon, 5 Feb 2024 17:34:09 +0000 Received: from PAXPR04MB9642.eurprd04.prod.outlook.com ([fe80::c8b4:5648:8948:e85c]) by PAXPR04MB9642.eurprd04.prod.outlook.com ([fe80::c8b4:5648:8948:e85c%3]) with mapi id 15.20.7249.032; Mon, 5 Feb 2024 17:34:09 +0000 From: Frank Li To: lpieralisi@kernel.org Cc: Frank.li@nxp.com, bhelgaas@google.com, conor+dt@kernel.org, devicetree@vger.kernel.org, festevam@gmail.com, helgaas@kernel.org, hongxing.zhu@nxp.com, imx@lists.linux.dev, kernel@pengutronix.de, krzysztof.kozlowski+dt@linaro.org, krzysztof.kozlowski@linaro.org, kw@linux.com, l.stach@pengutronix.de, linux-arm-kernel@lists.infradead.org, linux-imx@nxp.com, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, manivannan.sadhasivam@linaro.org, robh@kernel.org, s.hauer@pengutronix.de, shawnguo@kernel.org Subject: [PATCH v10 03/14] PCI: imx6: Simplify reset handling by using by using *_FLAG_HAS_*_RESET Date: Mon, 5 Feb 2024 12:33:24 -0500 Message-Id: <20240205173335.1120469-4-Frank.Li@nxp.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240205173335.1120469-1-Frank.Li@nxp.com> References: <20240205173335.1120469-1-Frank.Li@nxp.com> X-ClientProxiedBy: BYAPR07CA0041.namprd07.prod.outlook.com (2603:10b6:a03:60::18) To PAXPR04MB9642.eurprd04.prod.outlook.com (2603:10a6:102:240::14) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PAXPR04MB9642:EE_|AS8PR04MB7733:EE_ X-MS-Office365-Filtering-Correlation-Id: 68a1de59-6d2e-4ac2-1182-08dc2670a934 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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The drvdata::flags and a bitmask ensures a cleaner and more scalable switch-case structure for handling reset. Reviewed-by: Manivannan Sadhasivam Reviewed-by: Philipp Zabel Signed-off-by: Frank Li --- Notes: Change from v4 to v5: - Add Mani's Reviewed-by tag - Fixed MQ_EP's flags Chagne from v3 to v4: - none Change from v2 to v3: - add Philipp's Reviewed-by tag Change from v1 to v2: - remove condition check before reset_control_(de)assert() because it is none ops if a NULL pointer pass down. - still keep condition check at probe to help identify dts file mismatch problem. Change from v1 to v2: - remove condition check before reset_control_(de)assert() because it is none ops if a NULL pointer pass down. - still keep condition check at probe to help identify dts file mismatch problem. drivers/pci/controller/dwc/pci-imx6.c | 105 ++++++++++---------------- 1 file changed, 39 insertions(+), 66 deletions(-) diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c index 59f117f855c26..a1653b58051b7 100644 --- a/drivers/pci/controller/dwc/pci-imx6.c +++ b/drivers/pci/controller/dwc/pci-imx6.c @@ -61,6 +61,8 @@ enum imx6_pcie_variants { #define IMX6_PCIE_FLAG_IMX6_SPEED_CHANGE BIT(1) #define IMX6_PCIE_FLAG_SUPPORTS_SUSPEND BIT(2) #define IMX6_PCIE_FLAG_HAS_PHYDRV BIT(3) +#define IMX6_PCIE_FLAG_HAS_APP_RESET BIT(4) +#define IMX6_PCIE_FLAG_HAS_PHY_RESET BIT(5) #define imx6_check_flag(pci, val) (pci->drvdata->flags & val) @@ -661,18 +663,10 @@ static void imx6_pcie_clk_disable(struct imx6_pcie *imx6_pcie) static void imx6_pcie_assert_core_reset(struct imx6_pcie *imx6_pcie) { + reset_control_assert(imx6_pcie->pciephy_reset); + reset_control_assert(imx6_pcie->apps_reset); + switch (imx6_pcie->drvdata->variant) { - case IMX7D: - case IMX8MQ: - case IMX8MQ_EP: - reset_control_assert(imx6_pcie->pciephy_reset); - fallthrough; - case IMX8MM: - case IMX8MM_EP: - case IMX8MP: - case IMX8MP_EP: - reset_control_assert(imx6_pcie->apps_reset); - break; case IMX6SX: regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, IMX6SX_GPR12_PCIE_TEST_POWERDOWN, @@ -693,6 +687,8 @@ static void imx6_pcie_assert_core_reset(struct imx6_pcie *imx6_pcie) regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR1, IMX6Q_GPR1_PCIE_REF_CLK_EN, 0 << 16); break; + default: + break; } /* Some boards don't have PCIe reset GPIO. */ @@ -706,14 +702,10 @@ static int imx6_pcie_deassert_core_reset(struct imx6_pcie *imx6_pcie) struct dw_pcie *pci = imx6_pcie->pci; struct device *dev = pci->dev; + reset_control_deassert(imx6_pcie->pciephy_reset); + switch (imx6_pcie->drvdata->variant) { - case IMX8MQ: - case IMX8MQ_EP: - reset_control_deassert(imx6_pcie->pciephy_reset); - break; case IMX7D: - reset_control_deassert(imx6_pcie->pciephy_reset); - /* Workaround for ERR010728, failure of PCI-e PLL VCO to * oscillate, especially when cold. This turns off "Duty-cycle * Corrector" and other mysterious undocumented things. @@ -745,11 +737,7 @@ static int imx6_pcie_deassert_core_reset(struct imx6_pcie *imx6_pcie) usleep_range(200, 500); break; - case IMX6Q: /* Nothing to do */ - case IMX8MM: - case IMX8MM_EP: - case IMX8MP: - case IMX8MP_EP: + default: break; } @@ -796,16 +784,11 @@ static void imx6_pcie_ltssm_enable(struct device *dev) IMX6Q_GPR12_PCIE_CTL_2, IMX6Q_GPR12_PCIE_CTL_2); break; - case IMX7D: - case IMX8MQ: - case IMX8MQ_EP: - case IMX8MM: - case IMX8MM_EP: - case IMX8MP: - case IMX8MP_EP: - reset_control_deassert(imx6_pcie->apps_reset); + default: break; } + + reset_control_deassert(imx6_pcie->apps_reset); } static void imx6_pcie_ltssm_disable(struct device *dev) @@ -819,16 +802,11 @@ static void imx6_pcie_ltssm_disable(struct device *dev) regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, IMX6Q_GPR12_PCIE_CTL_2, 0); break; - case IMX7D: - case IMX8MQ: - case IMX8MQ_EP: - case IMX8MM: - case IMX8MM_EP: - case IMX8MP: - case IMX8MP_EP: - reset_control_assert(imx6_pcie->apps_reset); + default: break; } + + reset_control_assert(imx6_pcie->apps_reset); } static int imx6_pcie_start_link(struct dw_pcie *pci) @@ -1287,38 +1265,26 @@ static int imx6_pcie_probe(struct platform_device *pdev) "failed to get pcie phy\n"); } + if (imx6_check_flag(imx6_pcie, IMX6_PCIE_FLAG_HAS_APP_RESET)) { + imx6_pcie->apps_reset = devm_reset_control_get_exclusive(dev, "apps"); + if (IS_ERR(imx6_pcie->apps_reset)) + return dev_err_probe(dev, PTR_ERR(imx6_pcie->apps_reset), + "failed to get pcie apps reset control\n"); + } + + if (imx6_check_flag(imx6_pcie, IMX6_PCIE_FLAG_HAS_PHY_RESET)) { + imx6_pcie->pciephy_reset = devm_reset_control_get_exclusive(dev, "pciephy"); + if (IS_ERR(imx6_pcie->pciephy_reset)) + return dev_err_probe(dev, PTR_ERR(imx6_pcie->pciephy_reset), + "Failed to get PCIEPHY reset control\n"); + } + switch (imx6_pcie->drvdata->variant) { case IMX8MQ: case IMX8MQ_EP: case IMX7D: if (dbi_base->start == IMX8MQ_PCIE2_BASE_ADDR) imx6_pcie->controller_id = 1; - - imx6_pcie->pciephy_reset = devm_reset_control_get_exclusive(dev, - "pciephy"); - if (IS_ERR(imx6_pcie->pciephy_reset)) { - dev_err(dev, "Failed to get PCIEPHY reset control\n"); - return PTR_ERR(imx6_pcie->pciephy_reset); - } - - imx6_pcie->apps_reset = devm_reset_control_get_exclusive(dev, - "apps"); - if (IS_ERR(imx6_pcie->apps_reset)) { - dev_err(dev, "Failed to get PCIE APPS reset control\n"); - return PTR_ERR(imx6_pcie->apps_reset); - } - break; - case IMX8MM: - case IMX8MM_EP: - case IMX8MP: - case IMX8MP_EP: - imx6_pcie->apps_reset = devm_reset_control_get_exclusive(dev, - "apps"); - if (IS_ERR(imx6_pcie->apps_reset)) - return dev_err_probe(dev, PTR_ERR(imx6_pcie->apps_reset), - "failed to get pcie apps reset control\n"); - - break; default: break; } @@ -1448,13 +1414,17 @@ static const struct imx6_pcie_drvdata drvdata[] = { }, [IMX7D] = { .variant = IMX7D, - .flags = IMX6_PCIE_FLAG_SUPPORTS_SUSPEND, + .flags = IMX6_PCIE_FLAG_SUPPORTS_SUSPEND | + IMX6_PCIE_FLAG_HAS_APP_RESET | + IMX6_PCIE_FLAG_HAS_PHY_RESET, .gpr = "fsl,imx7d-iomuxc-gpr", .clk_names = imx6q_clks, .clks_cnt = ARRAY_SIZE(imx6q_clks), }, [IMX8MQ] = { .variant = IMX8MQ, + .flags = IMX6_PCIE_FLAG_HAS_APP_RESET | + IMX6_PCIE_FLAG_HAS_PHY_RESET, .gpr = "fsl,imx8mq-iomuxc-gpr", .clk_names = imx8mq_clks, .clks_cnt = ARRAY_SIZE(imx8mq_clks), @@ -1471,13 +1441,16 @@ static const struct imx6_pcie_drvdata drvdata[] = { [IMX8MP] = { .variant = IMX8MP, .flags = IMX6_PCIE_FLAG_SUPPORTS_SUSPEND | - IMX6_PCIE_FLAG_HAS_PHYDRV, + IMX6_PCIE_FLAG_HAS_PHYDRV | + IMX6_PCIE_FLAG_HAS_APP_RESET, .gpr = "fsl,imx8mp-iomuxc-gpr", .clk_names = imx8mm_clks, .clks_cnt = ARRAY_SIZE(imx8mm_clks), }, [IMX8MQ_EP] = { .variant = IMX8MQ_EP, + .flags = IMX6_PCIE_FLAG_HAS_APP_RESET | + IMX6_PCIE_FLAG_HAS_PHY_RESET, .mode = DW_PCIE_EP_TYPE, .gpr = "fsl,imx8mq-iomuxc-gpr", .clk_names = imx8mq_clks, From patchwork Mon Feb 5 17:33:25 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Li X-Patchwork-Id: 196949 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:7301:168b:b0:106:860b:bbdd with SMTP id ma11csp1030100dyb; Mon, 5 Feb 2024 09:35:53 -0800 (PST) X-Google-Smtp-Source: AGHT+IHpu119Ibq9BHLNZjB348kFkWcVRVTdgtmSwvAGi2OsMrEJ4SUk6I98hFlLaSL+4Lsj0O/n X-Received: by 2002:a17:906:fb17:b0:a38:527:acef with SMTP id lz23-20020a170906fb1700b00a380527acefmr97385ejb.18.1707154553522; Mon, 05 Feb 2024 09:35:53 -0800 (PST) X-Forwarded-Encrypted: i=2; AJvYcCV/qZyYcf4Ea6pm41vMhfIp2xeZvDRG5a6jJsMxNR9uTnb+D9yvIl9ZhGc9bjAZIt3gF2Jg71G+dZWOiKY0ydLQkuRSMw== Received: from am.mirrors.kernel.org (am.mirrors.kernel.org. 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Reviewed-by: Manivannan Sadhasivam Signed-off-by: Frank Li --- Notes: Change from v7 to v8 - Add Manivannan Sadhasivam's review tag Change from v1 to v7 - none drivers/pci/controller/dwc/pci-imx6.c | 37 ++++++++++++--------------- 1 file changed, 16 insertions(+), 21 deletions(-) diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c index a1653b58051b7..8c816ff159115 100644 --- a/drivers/pci/controller/dwc/pci-imx6.c +++ b/drivers/pci/controller/dwc/pci-imx6.c @@ -76,6 +76,8 @@ struct imx6_pcie_drvdata { const char *gpr; const char * const *clk_names; const u32 clks_cnt; + const u32 ltssm_off; + const u32 ltssm_mask; }; struct imx6_pcie { @@ -775,18 +777,11 @@ static int imx6_pcie_wait_for_speed_change(struct imx6_pcie *imx6_pcie) static void imx6_pcie_ltssm_enable(struct device *dev) { struct imx6_pcie *imx6_pcie = dev_get_drvdata(dev); + const struct imx6_pcie_drvdata *drvdata = imx6_pcie->drvdata; - switch (imx6_pcie->drvdata->variant) { - case IMX6Q: - case IMX6SX: - case IMX6QP: - regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, - IMX6Q_GPR12_PCIE_CTL_2, - IMX6Q_GPR12_PCIE_CTL_2); - break; - default: - break; - } + if (drvdata->ltssm_mask) + regmap_update_bits(imx6_pcie->iomuxc_gpr, drvdata->ltssm_off, drvdata->ltssm_mask, + drvdata->ltssm_mask); reset_control_deassert(imx6_pcie->apps_reset); } @@ -794,17 +789,11 @@ static void imx6_pcie_ltssm_enable(struct device *dev) static void imx6_pcie_ltssm_disable(struct device *dev) { struct imx6_pcie *imx6_pcie = dev_get_drvdata(dev); + const struct imx6_pcie_drvdata *drvdata = imx6_pcie->drvdata; - switch (imx6_pcie->drvdata->variant) { - case IMX6Q: - case IMX6SX: - case IMX6QP: - regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, - IMX6Q_GPR12_PCIE_CTL_2, 0); - break; - default: - break; - } + if (drvdata->ltssm_mask) + regmap_update_bits(imx6_pcie->iomuxc_gpr, drvdata->ltssm_off, + drvdata->ltssm_mask, 0); reset_control_assert(imx6_pcie->apps_reset); } @@ -1392,6 +1381,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { .gpr = "fsl,imx6q-iomuxc-gpr", .clk_names = imx6q_clks, .clks_cnt = ARRAY_SIZE(imx6q_clks), + .ltssm_off = IOMUXC_GPR12, + .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2, }, [IMX6SX] = { .variant = IMX6SX, @@ -1401,6 +1392,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { .gpr = "fsl,imx6q-iomuxc-gpr", .clk_names = imx6sx_clks, .clks_cnt = ARRAY_SIZE(imx6sx_clks), + .ltssm_off = IOMUXC_GPR12, + .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2, }, [IMX6QP] = { .variant = IMX6QP, @@ -1411,6 +1404,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { .gpr = "fsl,imx6q-iomuxc-gpr", .clk_names = imx6q_clks, .clks_cnt = ARRAY_SIZE(imx6q_clks), + .ltssm_off = IOMUXC_GPR12, + .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2, }, [IMX7D] = { .variant = IMX7D, From patchwork Mon Feb 5 17:33:26 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Li X-Patchwork-Id: 196950 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:7301:168b:b0:106:860b:bbdd with SMTP id ma11csp1030357dyb; Mon, 5 Feb 2024 09:36:14 -0800 (PST) X-Google-Smtp-Source: AGHT+IEEYA+G9odLWwTzCBiOZXywov7IQEZ5HURE/VTl4OyfmpzUGj7jX6p8wbZiPOSg/LsxmfvK X-Received: by 2002:a05:620a:46a1:b0:784:5c6:94cb with SMTP id bq33-20020a05620a46a100b0078405c694cbmr12538959qkb.0.1707154573938; Mon, 05 Feb 2024 09:36:13 -0800 (PST) X-Forwarded-Encrypted: i=2; AJvYcCVAw0/u0DWF22QrBtcJQL7u+qVMJw3n7VsxDiJsnrcrnh5Iu87suEKlqyv7G9AM7XP2llqeU5EZjwSva4spnSVvegwY8g== Received: from ny.mirrors.kernel.org (ny.mirrors.kernel.org. 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b=pT2iCW1HT+oV4+fuiaYLwPkkdghWTxGCefG++q5gt9eBBYfDwAqO6QGahvP9ZpicbRKFrJxQ4U+4LCeVFsUzmVNkRwOJWV1lNXDpaQBhGxXwDwEfD/yHvWLj79RVXE8NBGjSBiYXn0imxBEobjlx0hXqaMb+fKIDl36n7rBTAQc= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nxp.com; Received: from PAXPR04MB9642.eurprd04.prod.outlook.com (2603:10a6:102:240::14) by AS8PR04MB7733.eurprd04.prod.outlook.com (2603:10a6:20b:288::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7249.34; Mon, 5 Feb 2024 17:34:19 +0000 Received: from PAXPR04MB9642.eurprd04.prod.outlook.com ([fe80::c8b4:5648:8948:e85c]) by PAXPR04MB9642.eurprd04.prod.outlook.com ([fe80::c8b4:5648:8948:e85c%3]) with mapi id 15.20.7249.032; Mon, 5 Feb 2024 17:34:19 +0000 From: Frank Li To: lpieralisi@kernel.org Cc: Frank.li@nxp.com, bhelgaas@google.com, conor+dt@kernel.org, devicetree@vger.kernel.org, festevam@gmail.com, helgaas@kernel.org, hongxing.zhu@nxp.com, imx@lists.linux.dev, kernel@pengutronix.de, krzysztof.kozlowski+dt@linaro.org, krzysztof.kozlowski@linaro.org, kw@linux.com, l.stach@pengutronix.de, linux-arm-kernel@lists.infradead.org, linux-imx@nxp.com, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, manivannan.sadhasivam@linaro.org, robh@kernel.org, s.hauer@pengutronix.de, shawnguo@kernel.org Subject: [PATCH v10 05/14] PCI: imx6: Simplify configure_type() by using mode_off and mode_mask Date: Mon, 5 Feb 2024 12:33:26 -0500 Message-Id: <20240205173335.1120469-6-Frank.Li@nxp.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240205173335.1120469-1-Frank.Li@nxp.com> References: <20240205173335.1120469-1-Frank.Li@nxp.com> X-ClientProxiedBy: BYAPR07CA0041.namprd07.prod.outlook.com (2603:10b6:a03:60::18) To PAXPR04MB9642.eurprd04.prod.outlook.com (2603:10a6:102:240::14) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PAXPR04MB9642:EE_|AS8PR04MB7733:EE_ X-MS-Office365-Filtering-Correlation-Id: 08f8aa86-cb50-4070-a4f0-08dc2670af23 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Reviewed-by: Manivannan Sadhasivam Signed-off-by: Frank Li --- Notes: Chagne from v8 to v9 - add Manivannan's review tag Change from v7 to v8 - replace simple with simplify - remove reduntant comments about FILED_PREP Change from v3 to v7 - none Change from v2 to v3 - none Change from v1 to v2 - use ffs() to fixe build error. Change from v2 to v3 - none Change from v1 to v2 - use ffs() to fixe build error. drivers/pci/controller/dwc/pci-imx6.c | 59 ++++++++++++++++++--------- 1 file changed, 39 insertions(+), 20 deletions(-) diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c index 8c816ff159115..4eeaf54709afd 100644 --- a/drivers/pci/controller/dwc/pci-imx6.c +++ b/drivers/pci/controller/dwc/pci-imx6.c @@ -68,6 +68,7 @@ enum imx6_pcie_variants { #define IMX6_PCIE_MAX_CLKS 6 +#define IMX6_PCIE_MAX_INSTANCES 2 struct imx6_pcie_drvdata { enum imx6_pcie_variants variant; enum dw_pcie_device_mode mode; @@ -78,6 +79,8 @@ struct imx6_pcie_drvdata { const u32 clks_cnt; const u32 ltssm_off; const u32 ltssm_mask; + const u32 mode_off[IMX6_PCIE_MAX_INSTANCES]; + const u32 mode_mask[IMX6_PCIE_MAX_INSTANCES]; }; struct imx6_pcie { @@ -174,32 +177,24 @@ static unsigned int imx6_pcie_grp_offset(const struct imx6_pcie *imx6_pcie) static void imx6_pcie_configure_type(struct imx6_pcie *imx6_pcie) { - unsigned int mask, val, mode; + const struct imx6_pcie_drvdata *drvdata = imx6_pcie->drvdata; + unsigned int mask, val, mode, id; - if (imx6_pcie->drvdata->mode == DW_PCIE_EP_TYPE) + if (drvdata->mode == DW_PCIE_EP_TYPE) mode = PCI_EXP_TYPE_ENDPOINT; else mode = PCI_EXP_TYPE_ROOT_PORT; - switch (imx6_pcie->drvdata->variant) { - case IMX8MQ: - case IMX8MQ_EP: - if (imx6_pcie->controller_id == 1) { - mask = IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE; - val = FIELD_PREP(IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE, - mode); - } else { - mask = IMX6Q_GPR12_DEVICE_TYPE; - val = FIELD_PREP(IMX6Q_GPR12_DEVICE_TYPE, mode); - } - break; - default: - mask = IMX6Q_GPR12_DEVICE_TYPE; - val = FIELD_PREP(IMX6Q_GPR12_DEVICE_TYPE, mode); - break; - } + id = imx6_pcie->controller_id; + + /* If mode_mask[id] is zero, means each controller have its individual gpr */ + if (!drvdata->mode_mask[id]) + id = 0; + + mask = drvdata->mode_mask[id]; + val = mode << (ffs(mask) - 1); - regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, mask, val); + regmap_update_bits(imx6_pcie->iomuxc_gpr, drvdata->mode_off[id], mask, val); } static int pcie_phy_poll_ack(struct imx6_pcie *imx6_pcie, bool exp_val) @@ -1383,6 +1378,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { .clks_cnt = ARRAY_SIZE(imx6q_clks), .ltssm_off = IOMUXC_GPR12, .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2, + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, }, [IMX6SX] = { .variant = IMX6SX, @@ -1394,6 +1391,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { .clks_cnt = ARRAY_SIZE(imx6sx_clks), .ltssm_off = IOMUXC_GPR12, .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2, + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, }, [IMX6QP] = { .variant = IMX6QP, @@ -1406,6 +1405,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { .clks_cnt = ARRAY_SIZE(imx6q_clks), .ltssm_off = IOMUXC_GPR12, .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2, + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, }, [IMX7D] = { .variant = IMX7D, @@ -1415,6 +1416,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { .gpr = "fsl,imx7d-iomuxc-gpr", .clk_names = imx6q_clks, .clks_cnt = ARRAY_SIZE(imx6q_clks), + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, }, [IMX8MQ] = { .variant = IMX8MQ, @@ -1423,6 +1426,10 @@ static const struct imx6_pcie_drvdata drvdata[] = { .gpr = "fsl,imx8mq-iomuxc-gpr", .clk_names = imx8mq_clks, .clks_cnt = ARRAY_SIZE(imx8mq_clks), + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, + .mode_off[1] = IOMUXC_GPR12, + .mode_mask[1] = IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE, }, [IMX8MM] = { .variant = IMX8MM, @@ -1432,6 +1439,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { .gpr = "fsl,imx8mm-iomuxc-gpr", .clk_names = imx8mm_clks, .clks_cnt = ARRAY_SIZE(imx8mm_clks), + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, }, [IMX8MP] = { .variant = IMX8MP, @@ -1441,6 +1450,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { .gpr = "fsl,imx8mp-iomuxc-gpr", .clk_names = imx8mm_clks, .clks_cnt = ARRAY_SIZE(imx8mm_clks), + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, }, [IMX8MQ_EP] = { .variant = IMX8MQ_EP, @@ -1450,6 +1461,10 @@ static const struct imx6_pcie_drvdata drvdata[] = { .gpr = "fsl,imx8mq-iomuxc-gpr", .clk_names = imx8mq_clks, .clks_cnt = ARRAY_SIZE(imx8mq_clks), + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, + .mode_off[1] = IOMUXC_GPR12, + .mode_mask[1] = IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE, }, [IMX8MM_EP] = { .variant = IMX8MM_EP, @@ -1458,6 +1473,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { .gpr = "fsl,imx8mm-iomuxc-gpr", .clk_names = imx8mm_clks, .clks_cnt = ARRAY_SIZE(imx8mm_clks), + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, }, [IMX8MP_EP] = { .variant = IMX8MP_EP, @@ -1466,6 +1483,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { .gpr = "fsl,imx8mp-iomuxc-gpr", .clk_names = imx8mm_clks, .clks_cnt = ARRAY_SIZE(imx8mm_clks), + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, }, }; 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b=KSfjjgz+z0069q36l8u/m1PzTO4WNXg8WAkNbfVBydH2j22NRQiEE8QvLudI60NKEyqPjYyJ35RNToEEB0H8Mz8c46ms5aEPU4twgzuCzS732e5bhU2Tv/UfhYw1XNR6LG37Mwbl0ba8P0BxfT/rp/gL08YCv7s4kjFZgFllgXU= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nxp.com; Received: from PAXPR04MB9642.eurprd04.prod.outlook.com (2603:10a6:102:240::14) by AS8PR04MB7733.eurprd04.prod.outlook.com (2603:10a6:20b:288::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7249.34; Mon, 5 Feb 2024 17:34:24 +0000 Received: from PAXPR04MB9642.eurprd04.prod.outlook.com ([fe80::c8b4:5648:8948:e85c]) by PAXPR04MB9642.eurprd04.prod.outlook.com ([fe80::c8b4:5648:8948:e85c%3]) with mapi id 15.20.7249.032; Mon, 5 Feb 2024 17:34:24 +0000 From: Frank Li To: lpieralisi@kernel.org Cc: Frank.li@nxp.com, bhelgaas@google.com, conor+dt@kernel.org, devicetree@vger.kernel.org, festevam@gmail.com, helgaas@kernel.org, hongxing.zhu@nxp.com, imx@lists.linux.dev, kernel@pengutronix.de, krzysztof.kozlowski+dt@linaro.org, krzysztof.kozlowski@linaro.org, kw@linux.com, l.stach@pengutronix.de, linux-arm-kernel@lists.infradead.org, linux-imx@nxp.com, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, manivannan.sadhasivam@linaro.org, robh@kernel.org, s.hauer@pengutronix.de, shawnguo@kernel.org Subject: [PATCH v10 06/14] PCI: imx6: Simplify switch-case logic by involve init_phy callback Date: Mon, 5 Feb 2024 12:33:27 -0500 Message-Id: <20240205173335.1120469-7-Frank.Li@nxp.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240205173335.1120469-1-Frank.Li@nxp.com> References: <20240205173335.1120469-1-Frank.Li@nxp.com> X-ClientProxiedBy: BYAPR07CA0041.namprd07.prod.outlook.com (2603:10b6:a03:60::18) To PAXPR04MB9642.eurprd04.prod.outlook.com (2603:10a6:102:240::14) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PAXPR04MB9642:EE_|AS8PR04MB7733:EE_ X-MS-Office365-Filtering-Correlation-Id: 14f18c82-0551-44f6-1966-08dc2670b208 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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This simplifies the code. Reviewed-by: Manivannan Sadhasivam Signed-off-by: Frank Li --- Notes: Change from v7 to v8: - rework commit message - wrap comments to 100 chars - return 0 at imx7d_pcie_init_phy() change from v1 to v4: - none drivers/pci/controller/dwc/pci-imx6.c | 134 +++++++++++++------------- 1 file changed, 69 insertions(+), 65 deletions(-) diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c index 4eeaf54709afd..c266b9f098a5b 100644 --- a/drivers/pci/controller/dwc/pci-imx6.c +++ b/drivers/pci/controller/dwc/pci-imx6.c @@ -69,6 +69,9 @@ enum imx6_pcie_variants { #define IMX6_PCIE_MAX_CLKS 6 #define IMX6_PCIE_MAX_INSTANCES 2 + +struct imx6_pcie; + struct imx6_pcie_drvdata { enum imx6_pcie_variants variant; enum dw_pcie_device_mode mode; @@ -81,6 +84,7 @@ struct imx6_pcie_drvdata { const u32 ltssm_mask; const u32 mode_off[IMX6_PCIE_MAX_INSTANCES]; const u32 mode_mask[IMX6_PCIE_MAX_INSTANCES]; + int (*init_phy)(struct imx6_pcie *pcie); }; struct imx6_pcie { @@ -322,76 +326,66 @@ static int pcie_phy_write(struct imx6_pcie *imx6_pcie, int addr, u16 data) return 0; } -static void imx6_pcie_init_phy(struct imx6_pcie *imx6_pcie) +static int imx8mq_pcie_init_phy(struct imx6_pcie *imx6_pcie) { - switch (imx6_pcie->drvdata->variant) { - case IMX8MM: - case IMX8MM_EP: - case IMX8MP: - case IMX8MP_EP: - /* - * The PHY initialization had been done in the PHY - * driver, break here directly. - */ - break; - case IMX8MQ: - case IMX8MQ_EP: - /* - * TODO: Currently this code assumes external - * oscillator is being used - */ + /* TODO: Currently this code assumes external oscillator is being used */ + regmap_update_bits(imx6_pcie->iomuxc_gpr, + imx6_pcie_grp_offset(imx6_pcie), + IMX8MQ_GPR_PCIE_REF_USE_PAD, + IMX8MQ_GPR_PCIE_REF_USE_PAD); + /* + * Regarding the datasheet, the PCIE_VPH is suggested to be 1.8V. If the PCIE_VPH is + * supplied by 3.3V, the VREG_BYPASS should be cleared to zero. + */ + if (imx6_pcie->vph && regulator_get_voltage(imx6_pcie->vph) > 3000000) regmap_update_bits(imx6_pcie->iomuxc_gpr, imx6_pcie_grp_offset(imx6_pcie), - IMX8MQ_GPR_PCIE_REF_USE_PAD, - IMX8MQ_GPR_PCIE_REF_USE_PAD); - /* - * Regarding the datasheet, the PCIE_VPH is suggested - * to be 1.8V. If the PCIE_VPH is supplied by 3.3V, the - * VREG_BYPASS should be cleared to zero. - */ - if (imx6_pcie->vph && - regulator_get_voltage(imx6_pcie->vph) > 3000000) - regmap_update_bits(imx6_pcie->iomuxc_gpr, - imx6_pcie_grp_offset(imx6_pcie), - IMX8MQ_GPR_PCIE_VREG_BYPASS, - 0); - break; - case IMX7D: - regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, - IMX7D_GPR12_PCIE_PHY_REFCLK_SEL, 0); - break; - case IMX6SX: - regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, - IMX6SX_GPR12_PCIE_RX_EQ_MASK, - IMX6SX_GPR12_PCIE_RX_EQ_2); - fallthrough; - default: - regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, + IMX8MQ_GPR_PCIE_VREG_BYPASS, + 0); + + return 0; +} + +static int imx7d_pcie_init_phy(struct imx6_pcie *imx6_pcie) +{ + regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, IMX7D_GPR12_PCIE_PHY_REFCLK_SEL, 0); + + return 0; +} + +static int imx6_pcie_init_phy(struct imx6_pcie *imx6_pcie) +{ + regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, IMX6Q_GPR12_PCIE_CTL_2, 0 << 10); - /* configure constant input signal to the pcie ctrl and phy */ - regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, - IMX6Q_GPR12_LOS_LEVEL, 9 << 4); - - regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR8, - IMX6Q_GPR8_TX_DEEMPH_GEN1, - imx6_pcie->tx_deemph_gen1 << 0); - regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR8, - IMX6Q_GPR8_TX_DEEMPH_GEN2_3P5DB, - imx6_pcie->tx_deemph_gen2_3p5db << 6); - regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR8, - IMX6Q_GPR8_TX_DEEMPH_GEN2_6DB, - imx6_pcie->tx_deemph_gen2_6db << 12); - regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR8, - IMX6Q_GPR8_TX_SWING_FULL, - imx6_pcie->tx_swing_full << 18); - regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR8, - IMX6Q_GPR8_TX_SWING_LOW, - imx6_pcie->tx_swing_low << 25); - break; - } + /* configure constant input signal to the pcie ctrl and phy */ + regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, + IMX6Q_GPR12_LOS_LEVEL, 9 << 4); + + regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR8, + IMX6Q_GPR8_TX_DEEMPH_GEN1, + imx6_pcie->tx_deemph_gen1 << 0); + regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR8, + IMX6Q_GPR8_TX_DEEMPH_GEN2_3P5DB, + imx6_pcie->tx_deemph_gen2_3p5db << 6); + regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR8, + IMX6Q_GPR8_TX_DEEMPH_GEN2_6DB, + imx6_pcie->tx_deemph_gen2_6db << 12); + regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR8, + IMX6Q_GPR8_TX_SWING_FULL, + imx6_pcie->tx_swing_full << 18); + regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR8, + IMX6Q_GPR8_TX_SWING_LOW, + imx6_pcie->tx_swing_low << 25); + return 0; +} - imx6_pcie_configure_type(imx6_pcie); +static int imx6sx_pcie_init_phy(struct imx6_pcie *imx6_pcie) +{ + regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, + IMX6SX_GPR12_PCIE_RX_EQ_MASK, IMX6SX_GPR12_PCIE_RX_EQ_2); + + return imx6_pcie_init_phy(imx6_pcie); } static void imx7d_pcie_wait_for_phy_pll_lock(struct imx6_pcie *imx6_pcie) @@ -902,7 +896,11 @@ static int imx6_pcie_host_init(struct dw_pcie_rp *pp) } imx6_pcie_assert_core_reset(imx6_pcie); - imx6_pcie_init_phy(imx6_pcie); + + if (imx6_pcie->drvdata->init_phy) + imx6_pcie->drvdata->init_phy(imx6_pcie); + + imx6_pcie_configure_type(imx6_pcie); ret = imx6_pcie_clk_enable(imx6_pcie); if (ret) { @@ -1380,6 +1378,7 @@ static const struct imx6_pcie_drvdata drvdata[] = { .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2, .mode_off[0] = IOMUXC_GPR12, .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, + .init_phy = imx6_pcie_init_phy, }, [IMX6SX] = { .variant = IMX6SX, @@ -1393,6 +1392,7 @@ static const struct imx6_pcie_drvdata drvdata[] = { .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2, .mode_off[0] = IOMUXC_GPR12, .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, + .init_phy = imx6sx_pcie_init_phy, }, [IMX6QP] = { .variant = IMX6QP, @@ -1407,6 +1407,7 @@ static const struct imx6_pcie_drvdata drvdata[] = { .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2, .mode_off[0] = IOMUXC_GPR12, .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, + .init_phy = imx6_pcie_init_phy, }, [IMX7D] = { .variant = IMX7D, @@ -1418,6 +1419,7 @@ static const struct imx6_pcie_drvdata drvdata[] = { .clks_cnt = ARRAY_SIZE(imx6q_clks), .mode_off[0] = IOMUXC_GPR12, .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, + .init_phy = imx7d_pcie_init_phy, }, [IMX8MQ] = { .variant = IMX8MQ, @@ -1430,6 +1432,7 @@ static const struct imx6_pcie_drvdata drvdata[] = { .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, .mode_off[1] = IOMUXC_GPR12, .mode_mask[1] = IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE, + .init_phy = imx8mq_pcie_init_phy, }, [IMX8MM] = { .variant = IMX8MM, @@ -1465,6 +1468,7 @@ static const struct imx6_pcie_drvdata drvdata[] = { .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, .mode_off[1] = IOMUXC_GPR12, .mode_mask[1] = IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE, + .init_phy = imx8mq_pcie_init_phy, }, [IMX8MM_EP] = { .variant = IMX8MM_EP, From patchwork Mon Feb 5 17:33:28 2024 Content-Type: text/plain; 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Acked-by: Rob Herring Acked-by: Manivannan Sadhasivam Signed-off-by: Frank Li --- Notes: Change from v7 to v8 - add Manivannan Sadhasiva's Ack tag Change from v6 to v7 - rewrite git commit message by using simple words Change from v5 to v6 - rewrite git commit message and explain why remove it safely. - Add Rob's Ack Change from v1 to v4 - new patch at v4 .../bindings/pci/fsl,imx6q-pcie-common.yaml | 16 ---------------- 1 file changed, 16 deletions(-) diff --git a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-common.yaml b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-common.yaml index d91b639ae7ae7..0c50487a3866d 100644 --- a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-common.yaml +++ b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-common.yaml @@ -150,22 +150,6 @@ allOf: - {} - const: pcie_phy - const: pcie_aux - - if: - properties: - compatible: - not: - contains: - enum: - - fsl,imx6sx-pcie - - fsl,imx8mq-pcie - - fsl,imx6sx-pcie-ep - - fsl,imx8mq-pcie-ep - then: - properties: - clocks: - maxItems: 3 - clock-names: - maxItems: 3 - if: properties: From patchwork Mon Feb 5 17:33:29 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Li X-Patchwork-Id: 196953 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:7301:168b:b0:106:860b:bbdd with SMTP id ma11csp1030835dyb; Mon, 5 Feb 2024 09:37:06 -0800 (PST) X-Google-Smtp-Source: AGHT+IGC8M18a5Yi1O7+3aNoOS+vvxkYyjPInNJFHBQWU5YdxKzI6DPqm+hTnpqHYV9UdGA3q5BJ X-Received: by 2002:a17:906:d92c:b0:a36:2d2f:3385 with SMTP id rn12-20020a170906d92c00b00a362d2f3385mr111148ejb.9.1707154626431; Mon, 05 Feb 2024 09:37:06 -0800 (PST) X-Forwarded-Encrypted: i=2; AJvYcCWeufFR1VKFi+AXnkdvFF1/ByBgyzcLz2mvh7Vtb52gcIw31kqe2LwPdwGvwdcKa6kJmuDJVdhALCT8BpPyjcFu5pkydw== Received: from am.mirrors.kernel.org (am.mirrors.kernel.org. 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Needn't duplciate here. Add 'if' check for existed compatible string to restrict reg and reg-names. This prepare to add new compatible string with difference reg-names sets. Acked-by: Rob Herring Reviewed-by: Krzysztof Kozlowski Acked-by: Manivannan Sadhasivam Signed-off-by: Frank Li --- Notes: Change from v7 to v8 - Add Manivannan Sadhasivam's ACK tag Change from v6 to v7 - add Krzysztof's review tag Change from v5 to v6 - Add if check for existed compatible string Change from v4 to v5 - add Rob's Acked Change from v1 to v4: - new patch at v4 .../bindings/pci/fsl,imx6q-pcie.yaml | 30 ++++++++++++------- 1 file changed, 20 insertions(+), 10 deletions(-) diff --git a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml index 81bbb8728f0f9..eeca6b7b540f9 100644 --- a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml +++ b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml @@ -30,16 +30,6 @@ properties: - fsl,imx8mm-pcie - fsl,imx8mp-pcie - reg: - items: - - description: Data Bus Interface (DBI) registers. - - description: PCIe configuration space region. - - reg-names: - items: - - const: dbi - - const: config - clocks: minItems: 3 items: @@ -90,6 +80,26 @@ required: allOf: - $ref: /schemas/pci/snps,dw-pcie.yaml# - $ref: /schemas/pci/fsl,imx6q-pcie-common.yaml# + - if: + properties: + compatible: + enum: + - fsl,imx6q-pcie + - fsl,imx6sx-pcie + - fsl,imx6qp-pcie + - fsl,imx7d-pcie + - fsl,imx8mq-pcie + - fsl,imx8mm-pcie + - fsl,imx8mp-pcie + then: + properties: + reg: + maxItems: 2 + reg-names: + items: + - const: dbi + - const: config + - if: properties: compatible: From patchwork Mon Feb 5 17:33:30 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Li X-Patchwork-Id: 196960 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:7301:168b:b0:106:860b:bbdd with SMTP id ma11csp1035242dyb; Mon, 5 Feb 2024 09:45:34 -0800 (PST) X-Google-Smtp-Source: AGHT+IHBiUQQtOSokLHfxgMjCwkCrTeSaA27KHbENeV7owsClIqQFR8MnOyNle2HS1fqu0QVs7iW X-Received: by 2002:a05:6a00:938d:b0:6e0:5249:69e6 with SMTP id ka13-20020a056a00938d00b006e0524969e6mr295860pfb.17.1707155134302; Mon, 05 Feb 2024 09:45:34 -0800 (PST) X-Forwarded-Encrypted: i=2; AJvYcCW1kY81tjuSbbdXl2PPai3kG+IKoHT87lbh3yEI33qucCkbGjyfdj/qv5mecvm6qsY1JaG2haTJUTlsrdu358JTzQ+4cw== Received: from sy.mirrors.kernel.org (sy.mirrors.kernel.org. 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Add "atu" and "app" to reg-names. Reviewed-by: Rob Herring Signed-off-by: Richard Zhu Signed-off-by: Frank Li --- Notes: Change from v8 to v9 - Added rob's review tag Change from v7 to v8 -none Change from v6 to v7 - Added my sign off Change from v5 to v6 - move atu and app after config Change from v2 to v3 - Remove krzy's ACK tag - Add condition check for imx95, which required more reg-names then old platform, so need Krzy review again, Change from v1 to v2 - add Krzy's ACK tag .../bindings/pci/fsl,imx6q-pcie-common.yaml | 1 + .../bindings/pci/fsl,imx6q-pcie.yaml | 19 +++++++++++++++++++ 2 files changed, 20 insertions(+) diff --git a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-common.yaml b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-common.yaml index 0c50487a3866d..a8b34f58f8f49 100644 --- a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-common.yaml +++ b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-common.yaml @@ -207,6 +207,7 @@ allOf: - fsl,imx6sx-pcie - fsl,imx6q-pcie - fsl,imx6qp-pcie + - fsl,imx95-pcie - fsl,imx6sx-pcie-ep - fsl,imx6q-pcie-ep - fsl,imx6qp-pcie-ep diff --git a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml index eeca6b7b540f9..8b8d77b1154b5 100644 --- a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml +++ b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml @@ -29,6 +29,7 @@ properties: - fsl,imx8mq-pcie - fsl,imx8mm-pcie - fsl,imx8mp-pcie + - fsl,imx95-pcie clocks: minItems: 3 @@ -100,6 +101,23 @@ allOf: - const: dbi - const: config + - if: + properties: + compatible: + enum: + - fsl,imx95-pcie + then: + properties: + reg: + minItems: 4 + maxItems: 4 + reg-names: + items: + - const: dbi + - const: config + - const: atu + - const: app + - if: properties: compatible: @@ -121,6 +139,7 @@ allOf: compatible: enum: - fsl,imx8mq-pcie + - fsl,imx95-pcie then: properties: clocks: From patchwork Mon Feb 5 17:33:31 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Li X-Patchwork-Id: 196954 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:7301:168b:b0:106:860b:bbdd with SMTP id ma11csp1031103dyb; Mon, 5 Feb 2024 09:37:36 -0800 (PST) X-Google-Smtp-Source: AGHT+IEoh8ifVlox/TVcE3l1v3PHfebNHy8eAVGnlO/UfSBltLtaCvikwjcdPhIyCfwWM8tmdw8M X-Received: by 2002:a17:902:fc46:b0:1d9:542c:ec01 with SMTP id me6-20020a170902fc4600b001d9542cec01mr300586plb.12.1707154656680; Mon, 05 Feb 2024 09:37:36 -0800 (PST) X-Forwarded-Encrypted: i=2; AJvYcCW8jUoIQT+1ZM0J7pz4ABM7Z2Y4O4jNbsSZQqM0xzEJqvjONQIBLJrN2wcXKxlojXuUXBR0lzcFlpGK5KKB24VkJBsDZg== Received: from sv.mirrors.kernel.org (sv.mirrors.kernel.org. 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Reviewed-by: Manivannan Sadhasivam Signed-off-by: Frank Li --- Notes: Change from v8 to v9 - Add mani's review tag Change from v7 to v8 - Update commit subject - add const from regmap - remove unnessary logic in imx6_pcie_deassert_core_reset() Change from v4 to v7 - none Change from v1 to v3 - none drivers/pci/controller/dwc/pci-imx6.c | 82 +++++++++++++++++++++++++-- 1 file changed, 77 insertions(+), 5 deletions(-) diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c index c266b9f098a5b..183bb3b31cf16 100644 --- a/drivers/pci/controller/dwc/pci-imx6.c +++ b/drivers/pci/controller/dwc/pci-imx6.c @@ -42,6 +42,25 @@ #define IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE GENMASK(11, 8) #define IMX8MQ_PCIE2_BASE_ADDR 0x33c00000 +#define IMX95_PCIE_PHY_GEN_CTRL 0x0 +#define IMX95_PCIE_REF_USE_PAD BIT(17) + +#define IMX95_PCIE_PHY_MPLLA_CTRL 0x10 +#define IMX95_PCIE_PHY_MPLL_STATE BIT(30) + +#define IMX95_PCIE_SS_RW_REG_0 0xf0 +#define IMX95_PCIE_REF_CLKEN BIT(23) +#define IMX95_PCIE_PHY_CR_PARA_SEL BIT(9) + +#define IMX95_PE0_GEN_CTRL_1 0x1050 +#define IMX95_PCIE_DEVICE_TYPE GENMASK(3, 0) + +#define IMX95_PE0_GEN_CTRL_3 0x1058 +#define IMX95_PCIE_LTSSM_EN BIT(0) + +#define IMX95_PE0_PM_STS 0x1064 +#define IMX95_PCIE_PM_LINKST_IN_L2 BIT(14) + #define to_imx6_pcie(x) dev_get_drvdata((x)->dev) enum imx6_pcie_variants { @@ -52,6 +71,7 @@ enum imx6_pcie_variants { IMX8MQ, IMX8MM, IMX8MP, + IMX95, IMX8MQ_EP, IMX8MM_EP, IMX8MP_EP, @@ -63,6 +83,7 @@ enum imx6_pcie_variants { #define IMX6_PCIE_FLAG_HAS_PHYDRV BIT(3) #define IMX6_PCIE_FLAG_HAS_APP_RESET BIT(4) #define IMX6_PCIE_FLAG_HAS_PHY_RESET BIT(5) +#define IMX6_PCIE_FLAG_HAS_SERDES BIT(6) #define imx6_check_flag(pci, val) (pci->drvdata->flags & val) @@ -179,6 +200,24 @@ static unsigned int imx6_pcie_grp_offset(const struct imx6_pcie *imx6_pcie) return imx6_pcie->controller_id == 1 ? IOMUXC_GPR16 : IOMUXC_GPR14; } +static int imx95_pcie_init_phy(struct imx6_pcie *imx6_pcie) +{ + regmap_update_bits(imx6_pcie->iomuxc_gpr, + IMX95_PCIE_SS_RW_REG_0, + IMX95_PCIE_PHY_CR_PARA_SEL, + IMX95_PCIE_PHY_CR_PARA_SEL); + + regmap_update_bits(imx6_pcie->iomuxc_gpr, + IMX95_PCIE_PHY_GEN_CTRL, + IMX95_PCIE_REF_USE_PAD, 0); + regmap_update_bits(imx6_pcie->iomuxc_gpr, + IMX95_PCIE_SS_RW_REG_0, + IMX95_PCIE_REF_CLKEN, + IMX95_PCIE_REF_CLKEN); + + return 0; +} + static void imx6_pcie_configure_type(struct imx6_pcie *imx6_pcie) { const struct imx6_pcie_drvdata *drvdata = imx6_pcie->drvdata; @@ -575,6 +614,7 @@ static int imx6_pcie_enable_ref_clk(struct imx6_pcie *imx6_pcie) IMX6Q_GPR1_PCIE_REF_CLK_EN, 1 << 16); break; case IMX7D: + case IMX95: break; case IMX8MM: case IMX8MM_EP: @@ -1278,12 +1318,32 @@ static int imx6_pcie_probe(struct platform_device *pdev) return PTR_ERR(imx6_pcie->turnoff_reset); } + if (imx6_pcie->drvdata->gpr) { /* Grab GPR config register range */ - imx6_pcie->iomuxc_gpr = - syscon_regmap_lookup_by_compatible(imx6_pcie->drvdata->gpr); - if (IS_ERR(imx6_pcie->iomuxc_gpr)) { - dev_err(dev, "unable to find iomuxc registers\n"); - return PTR_ERR(imx6_pcie->iomuxc_gpr); + imx6_pcie->iomuxc_gpr = + syscon_regmap_lookup_by_compatible(imx6_pcie->drvdata->gpr); + if (IS_ERR(imx6_pcie->iomuxc_gpr)) + return dev_err_probe(dev, PTR_ERR(imx6_pcie->iomuxc_gpr), + "unable to find iomuxc registers\n"); + } + + if (imx6_check_flag(imx6_pcie, IMX6_PCIE_FLAG_HAS_SERDES)) { + void __iomem *off = devm_platform_ioremap_resource_byname(pdev, "app"); + + if (IS_ERR(off)) + return dev_err_probe(dev, PTR_ERR(off), + "unable to find serdes registers\n"); + + static const struct regmap_config regmap_config = { + .reg_bits = 32, + .val_bits = 32, + .reg_stride = 4, + }; + + imx6_pcie->iomuxc_gpr = devm_regmap_init_mmio(dev, off, ®map_config); + if (IS_ERR(imx6_pcie->iomuxc_gpr)) + return dev_err_probe(dev, PTR_ERR(imx6_pcie->iomuxc_gpr), + "unable to find iomuxc registers\n"); } /* Grab PCIe PHY Tx Settings */ @@ -1456,6 +1516,17 @@ static const struct imx6_pcie_drvdata drvdata[] = { .mode_off[0] = IOMUXC_GPR12, .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, }, + [IMX95] = { + .variant = IMX95, + .flags = IMX6_PCIE_FLAG_HAS_SERDES, + .clk_names = imx8mq_clks, + .clks_cnt = ARRAY_SIZE(imx8mq_clks), + .ltssm_off = IMX95_PE0_GEN_CTRL_3, + .ltssm_mask = IMX95_PCIE_LTSSM_EN, + .mode_off[0] = IMX95_PE0_GEN_CTRL_1, + .mode_mask[0] = IMX95_PCIE_DEVICE_TYPE, + .init_phy = imx95_pcie_init_phy, + }, [IMX8MQ_EP] = { .variant = IMX8MQ_EP, .flags = IMX6_PCIE_FLAG_HAS_APP_RESET | @@ -1500,6 +1571,7 @@ static const struct of_device_id imx6_pcie_of_match[] = { { .compatible = "fsl,imx8mq-pcie", .data = &drvdata[IMX8MQ], }, { .compatible = "fsl,imx8mm-pcie", .data = &drvdata[IMX8MM], }, { .compatible = "fsl,imx8mp-pcie", .data = &drvdata[IMX8MP], }, + { .compatible = "fsl,imx95-pcie", .data = &drvdata[IMX95], }, { .compatible = "fsl,imx8mq-pcie-ep", .data = &drvdata[IMX8MQ_EP], }, { .compatible = "fsl,imx8mm-pcie-ep", .data = &drvdata[IMX8MM_EP], }, { .compatible = "fsl,imx8mp-pcie-ep", .data = &drvdata[IMX8MP_EP], }, From patchwork Mon Feb 5 17:33:32 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Li X-Patchwork-Id: 196962 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:7301:168b:b0:106:860b:bbdd with SMTP id ma11csp1035515dyb; Mon, 5 Feb 2024 09:46:02 -0800 (PST) X-Google-Smtp-Source: AGHT+IG0SocNRT3gwttzvfIVCJqGQxLyOqvTkkLNMVtBo64NrBr2XNrudzD0YNXkroVxEx2jUrGi X-Received: by 2002:a17:902:ed46:b0:1d9:a6ce:6c54 with SMTP id y6-20020a170902ed4600b001d9a6ce6c54mr210839plb.67.1707155161824; Mon, 05 Feb 2024 09:46:01 -0800 (PST) X-Forwarded-Encrypted: i=2; AJvYcCXeJ1wJwS9God1Sx/FIT4/lWoKkaZHiuDTz7sI+ix8NbpbMn1n82Nw58FRrLrS8roKRkFAYlzvVfb8zVuxJMEg4ENkOaw== Received: from sy.mirrors.kernel.org (sy.mirrors.kernel.org. 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Reviewed-by: Manivannan Sadhasivam Signed-off-by: Frank Li --- Notes: Change from v7 to v8 - update commit message - Add Manivannan Sadhasivam's review tag Change from v4 to v7 - none Change from v1 to v3 - new patches drivers/pci/controller/dwc/pci-imx6.c | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-) diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c index 183bb3b31cf16..9cc6802e93641 100644 --- a/drivers/pci/controller/dwc/pci-imx6.c +++ b/drivers/pci/controller/dwc/pci-imx6.c @@ -1067,7 +1067,6 @@ static int imx6_add_pcie_ep(struct imx6_pcie *imx6_pcie, int ret; unsigned int pcie_dbi2_offset; struct dw_pcie_ep *ep; - struct resource *res; struct dw_pcie *pci = imx6_pcie->pci; struct dw_pcie_rp *pp = &pci->pp; struct device *dev = pci->dev; @@ -1086,14 +1085,8 @@ static int imx6_add_pcie_ep(struct imx6_pcie *imx6_pcie, pcie_dbi2_offset = SZ_4K; break; } - pci->dbi_base2 = pci->dbi_base + pcie_dbi2_offset; - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "addr_space"); - if (!res) - return -EINVAL; - ep->phys_base = res->start; - ep->addr_size = resource_size(res); - ep->page_size = SZ_64K; + pci->dbi_base2 = pci->dbi_base + pcie_dbi2_offset; ret = dw_pcie_ep_init(ep); if (ret) { From patchwork Mon Feb 5 17:33:33 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Li X-Patchwork-Id: 196956 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:7301:168b:b0:106:860b:bbdd with SMTP id ma11csp1031487dyb; Mon, 5 Feb 2024 09:38:12 -0800 (PST) X-Google-Smtp-Source: AGHT+IHnpzSHI15MgdS6NPqAgWGNr2JRGoCRSFLuGJcyaY8MwREQLXHv09U6ZaWlSFp5OVPe2uv/ X-Received: by 2002:ac2:5de3:0:b0:511:52b4:8b93 with SMTP id z3-20020ac25de3000000b0051152b48b93mr198032lfq.29.1707154692267; Mon, 05 Feb 2024 09:38:12 -0800 (PST) X-Forwarded-Encrypted: i=2; AJvYcCWVk/NWZkidwhNI6C97bWmW6J1JF7z37TI2N8nhA0R8B9JYE8dCTXK+wJdahN09fF+8hDZYy0Gkjx2v0LNZ7M7QweliCw== Received: from am.mirrors.kernel.org (am.mirrors.kernel.org. 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: c3fc01c6-6955-42ee-ec4e-08dc2670c3bc X-MS-Exchange-CrossTenant-AuthSource: PAXPR04MB9642.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Feb 2024 17:34:54.3138 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: KNECFfGCcGwYCKze7vv2BIqPOae+8gmAS0F2hqQ3NJS9/T6NYoO3YnKqTqa34UP5jvzaLqN7lVY00n/s/RN3+Q== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM7PR04MB7080 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1790081438822041234 X-GMAIL-MSGID: 1790081438822041234 The i.MX EP exhibits variations in epc_features among different EP configurations. This introduces the addition of epc_features in imx6_pcie_drvdata to accommodate these differences. It's important to note that there are no functional changes in this commit; instead, it lays the groundwork for supporting i.MX95 EP functions. Reviewed-by: Manivannan Sadhasivam Signed-off-by: Frank Li --- Notes: Change from v7 to v8 - Added Manivannan Sadhasivam's review tag Change from v6 to v7 - none Change from v5 to v6 - add missed maxitems. - add comments about reuse linux,pci-domain as controller id. linux,pci-domain have not defined at PCI endpoint side. Change from v1 to v3 - new patch at v3 drivers/pci/controller/dwc/pci-imx6.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c index 9cc6802e93641..c2098e59fde1e 100644 --- a/drivers/pci/controller/dwc/pci-imx6.c +++ b/drivers/pci/controller/dwc/pci-imx6.c @@ -105,6 +105,7 @@ struct imx6_pcie_drvdata { const u32 ltssm_mask; const u32 mode_off[IMX6_PCIE_MAX_INSTANCES]; const u32 mode_mask[IMX6_PCIE_MAX_INSTANCES]; + const struct pci_epc_features *epc_features; int (*init_phy)(struct imx6_pcie *pcie); }; @@ -1052,7 +1053,10 @@ static const struct pci_epc_features imx8m_pcie_epc_features = { static const struct pci_epc_features* imx6_pcie_ep_get_features(struct dw_pcie_ep *ep) { - return &imx8m_pcie_epc_features; + struct dw_pcie *pci = to_dw_pcie_from_ep(ep); + struct imx6_pcie *imx6_pcie = to_imx6_pcie(pci); + + return imx6_pcie->drvdata->epc_features; } static const struct dw_pcie_ep_ops pcie_ep_ops = { @@ -1532,6 +1536,7 @@ static const struct imx6_pcie_drvdata drvdata[] = { .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, .mode_off[1] = IOMUXC_GPR12, .mode_mask[1] = IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE, + .epc_features = &imx8m_pcie_epc_features, .init_phy = imx8mq_pcie_init_phy, }, [IMX8MM_EP] = { @@ -1543,6 +1548,7 @@ static const struct imx6_pcie_drvdata drvdata[] = { .clks_cnt = ARRAY_SIZE(imx8mm_clks), .mode_off[0] = IOMUXC_GPR12, .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, + .epc_features = &imx8m_pcie_epc_features, }, [IMX8MP_EP] = { .variant = IMX8MP_EP, @@ -1553,6 +1559,7 @@ static const struct imx6_pcie_drvdata drvdata[] = { .clks_cnt = ARRAY_SIZE(imx8mm_clks), .mode_off[0] = IOMUXC_GPR12, .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, + .epc_features = &imx8m_pcie_epc_features, }, }; From patchwork Mon Feb 5 17:33:34 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Li X-Patchwork-Id: 196957 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:7301:168b:b0:106:860b:bbdd with SMTP id ma11csp1031589dyb; Mon, 5 Feb 2024 09:38:29 -0800 (PST) X-Google-Smtp-Source: AGHT+IEO4pXuOJuAUbd7HlwzxkrYPdLaS2RzLAQgdYptJ5vvE5NxCcF7w9ar48WVXBgXd/QBHBZ4 X-Received: by 2002:a17:906:b28e:b0:a36:fd11:3f99 with SMTP id q14-20020a170906b28e00b00a36fd113f99mr110107ejz.7.1707154709268; Mon, 05 Feb 2024 09:38:29 -0800 (PST) X-Forwarded-Encrypted: i=2; AJvYcCVA8o1EBx0MhwGn27JXE6GorjjmEGEtXTQc9FLm/Dv47FGglulqM/+GrUnXr8S0Eg+8jgpTk5/0LfwHJh/tY9MUNCp/XA== Received: from am.mirrors.kernel.org (am.mirrors.kernel.org. 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Add reg-name: "atu", "dbi2", "dma" and "app". Reviewed-by: Rob Herring Signed-off-by: Frank Li --- Notes: Change from v9 to v10 - remove "pci-domain" part Change from v8 to v9 - add rob's review tag Change from v3 to v8 - none Change from v1 to v3 - new patches at v3 .../bindings/pci/fsl,imx6q-pcie-ep.yaml | 46 +++++++++++++++---- 1 file changed, 38 insertions(+), 8 deletions(-) diff --git a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-ep.yaml b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-ep.yaml index ee155ed5f1811..a06f75df8458a 100644 --- a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-ep.yaml +++ b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-ep.yaml @@ -22,14 +22,7 @@ properties: - fsl,imx8mm-pcie-ep - fsl,imx8mq-pcie-ep - fsl,imx8mp-pcie-ep - - reg: - minItems: 2 - - reg-names: - items: - - const: dbi - - const: addr_space + - fsl,imx95-pcie-ep clocks: minItems: 3 @@ -62,11 +55,48 @@ required: allOf: - $ref: /schemas/pci/snps,dw-pcie-ep.yaml# - $ref: /schemas/pci/fsl,imx6q-pcie-common.yaml# + - if: + properties: + compatible: + enum: + - fsl,imx8mm-pcie-ep + - fsl,imx8mq-pcie-ep + - fsl,imx8mp-pcie-ep + then: + properties: + reg: + minItems: 2 + maxItems: 2 + reg-names: + items: + - const: dbi + - const: addr_space + + - if: + properties: + compatible: + enum: + - fsl,imx95-pcie-ep + then: + properties: + reg: + minItems: 6 + maxItems: 6 + reg-names: + items: + - const: dbi + - const: atu + - const: dbi2 + - const: app + - const: dma + - const: addr_space + - if: properties: compatible: enum: - fsl,imx8mq-pcie-ep + - fsl,imx95-pcie-ep then: properties: clocks: From patchwork Mon Feb 5 17:33:35 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Li X-Patchwork-Id: 196958 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:7301:168b:b0:106:860b:bbdd with SMTP id ma11csp1031730dyb; Mon, 5 Feb 2024 09:38:45 -0800 (PST) X-Google-Smtp-Source: AGHT+IG3X06eUne3BLm5F/293pXDdPW5fabPlj9UZSwrE++RivIelD+b5Xo34eyGzSEJaWue0k8c X-Received: by 2002:ac8:7f56:0:b0:42c:1c9e:9291 with SMTP id g22-20020ac87f56000000b0042c1c9e9291mr76765qtk.3.1707154725333; Mon, 05 Feb 2024 09:38:45 -0800 (PST) X-Forwarded-Encrypted: i=2; AJvYcCUw93kVeXgvMYL/EZYAo732YBZpXBcHaKLHFwx4NvVTpN/TM21KO6teXWrkehyXs277DO43gAjtknb0DwCHQo3xXCIX9g== Received: from ny.mirrors.kernel.org (ny.mirrors.kernel.org. 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b=KdC8zZtsC5i8ywIaQ6RycAwY47ILB7fCCLTCjWZ9tj0BTAVIgtqUoyUR/hwDBF8hbiORqBvWLC3YY1Jkyz8/ocLnVb4r1lP4PXwLQZGLcoJcRpDMA7WmcDSNLtq47345RMf1nKkC9op6XnaiJ3flLH5tfL9/9MDxrOmtmpqG7fs= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nxp.com; Received: from PAXPR04MB9642.eurprd04.prod.outlook.com (2603:10a6:102:240::14) by AM7PR04MB7080.eurprd04.prod.outlook.com (2603:10a6:20b:11b::7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7249.34; Mon, 5 Feb 2024 17:35:04 +0000 Received: from PAXPR04MB9642.eurprd04.prod.outlook.com ([fe80::c8b4:5648:8948:e85c]) by PAXPR04MB9642.eurprd04.prod.outlook.com ([fe80::c8b4:5648:8948:e85c%3]) with mapi id 15.20.7249.032; Mon, 5 Feb 2024 17:35:04 +0000 From: Frank Li To: lpieralisi@kernel.org Cc: Frank.li@nxp.com, bhelgaas@google.com, conor+dt@kernel.org, devicetree@vger.kernel.org, festevam@gmail.com, helgaas@kernel.org, hongxing.zhu@nxp.com, imx@lists.linux.dev, kernel@pengutronix.de, krzysztof.kozlowski+dt@linaro.org, krzysztof.kozlowski@linaro.org, kw@linux.com, l.stach@pengutronix.de, linux-arm-kernel@lists.infradead.org, linux-imx@nxp.com, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, manivannan.sadhasivam@linaro.org, robh@kernel.org, s.hauer@pengutronix.de, shawnguo@kernel.org Subject: [PATCH v10 14/14] PCI: imx6: Add iMX95 Endpoint (EP) support Date: Mon, 5 Feb 2024 12:33:35 -0500 Message-Id: <20240205173335.1120469-15-Frank.Li@nxp.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240205173335.1120469-1-Frank.Li@nxp.com> References: <20240205173335.1120469-1-Frank.Li@nxp.com> X-ClientProxiedBy: BYAPR07CA0041.namprd07.prod.outlook.com (2603:10b6:a03:60::18) To PAXPR04MB9642.eurprd04.prod.outlook.com (2603:10a6:102:240::14) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PAXPR04MB9642:EE_|AM7PR04MB7080:EE_ X-MS-Office365-Filtering-Correlation-Id: 0c7c54d9-07bf-4524-3a32-08dc2670c98d X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 0c7c54d9-07bf-4524-3a32-08dc2670c98d X-MS-Exchange-CrossTenant-AuthSource: PAXPR04MB9642.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Feb 2024 17:35:04.1237 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 8rwC4rkRTUqkyTYgWTOyVQpVSyq8P9X3KwwvGJjTLeKRHSCSAYU1ZDfM8SON25NALPbaneUtvoMKHfODQ63rJw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM7PR04MB7080 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1790081472939664816 X-GMAIL-MSGID: 1790081472939664816 Add iMX95 EP support and add 64bit address support. Internal bus bridge for PCI support 64bit dma address in iMX95. Hence, call dma_set_mask_and_coherent() to set 64 bit DMA mask. Reviewed-by: Manivannan Sadhasivam Signed-off-by: Frank Li --- Notes: Change from v9 to v10 - using if (device_property_match_string(dev, "reg-names", "dbi2")) instead of if (imx6_pcie->drvdata->variant == IMX95_EP) - so other platform can stat use "dbi2" in dts. @Mani: I change to check device_property_match_string(), so I can update other platform dts file, It should be better than imx6_pcie->drvdata->variant == IMX95_EP Change from v8 to v9 - update fixme comments - update BAR1 comments - Add mani's review tag Change from v7 to v8 - Update commit message - Using Fixme - Update clks_cnts by ARRAY_SIZE Change from v4 to v7 - none Change from v3 to v4 - change align to 4k for imx95 Change from v1 to v3 - new patches at v3 drivers/pci/controller/dwc/pci-imx6.c | 47 +++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c index c2098e59fde1e..472ff1cc17d2f 100644 --- a/drivers/pci/controller/dwc/pci-imx6.c +++ b/drivers/pci/controller/dwc/pci-imx6.c @@ -75,6 +75,7 @@ enum imx6_pcie_variants { IMX8MQ_EP, IMX8MM_EP, IMX8MP_EP, + IMX95_EP, }; #define IMX6_PCIE_FLAG_IMX6_PHY BIT(0) @@ -84,6 +85,7 @@ enum imx6_pcie_variants { #define IMX6_PCIE_FLAG_HAS_APP_RESET BIT(4) #define IMX6_PCIE_FLAG_HAS_PHY_RESET BIT(5) #define IMX6_PCIE_FLAG_HAS_SERDES BIT(6) +#define IMX6_PCIE_FLAG_SUPPORT_64BIT BIT(7) #define imx6_check_flag(pci, val) (pci->drvdata->flags & val) @@ -616,6 +618,7 @@ static int imx6_pcie_enable_ref_clk(struct imx6_pcie *imx6_pcie) break; case IMX7D: case IMX95: + case IMX95_EP: break; case IMX8MM: case IMX8MM_EP: @@ -1050,6 +1053,23 @@ static const struct pci_epc_features imx8m_pcie_epc_features = { .align = SZ_64K, }; +/* + * BAR# | Default BAR enable | Default BAR Type | Default BAR Size | BAR Sizing Scheme + * ================================================================================================ + * BAR0 | Enable | 64-bit | 1 MB | Programmable Size + * BAR1 | Disable | 32-bit | 64 KB | Fixed Size + * BAR1 should be disabled if BAR0 is 64bit. + * BAR2 | Enable | 32-bit | 1 MB | Programmable Size + * BAR3 | Enable | 32-bit | 64 KB | Programmable Size + * BAR4 | Enable | 32-bit | 1M | Programmable Size + * BAR5 | Enable | 32-bit | 64 KB | Programmable Size + */ +static const struct pci_epc_features imx95_pcie_epc_features = { + .msi_capable = true, + .bar_fixed_size[1] = SZ_64K, + .align = SZ_4K, +}; + static const struct pci_epc_features* imx6_pcie_ep_get_features(struct dw_pcie_ep *ep) { @@ -1092,6 +1112,15 @@ static int imx6_add_pcie_ep(struct imx6_pcie *imx6_pcie, pci->dbi_base2 = pci->dbi_base + pcie_dbi2_offset; + /* + * FIXME: Ideally, dbi2 base address should come from DT. But since only IMX95 is defining + * "dbi2" in DT, "dbi_base2" is set to NULL here for that platform alone so that the DWC + * core code can fetch that from DT. But once all platform DTs were fixed, this and the + * above "dbi_base2" setting should be removed. + */ + if (device_property_match_string(dev, "reg-names", "dbi2") >= 0) + pci->dbi_base2 = NULL; + ret = dw_pcie_ep_init(ep); if (ret) { dev_err(dev, "failed to initialize endpoint\n"); @@ -1343,6 +1372,9 @@ static int imx6_pcie_probe(struct platform_device *pdev) "unable to find iomuxc registers\n"); } + if (imx6_check_flag(imx6_pcie, IMX6_PCIE_FLAG_SUPPORT_64BIT)) + dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)); + /* Grab PCIe PHY Tx Settings */ if (of_property_read_u32(node, "fsl,tx-deemph-gen1", &imx6_pcie->tx_deemph_gen1)) @@ -1561,6 +1593,20 @@ static const struct imx6_pcie_drvdata drvdata[] = { .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, .epc_features = &imx8m_pcie_epc_features, }, + [IMX95_EP] = { + .variant = IMX95_EP, + .flags = IMX6_PCIE_FLAG_HAS_SERDES | + IMX6_PCIE_FLAG_SUPPORT_64BIT, + .clk_names = imx8mq_clks, + .clks_cnt = ARRAY_SIZE(imx8mq_clks), + .ltssm_off = IMX95_PE0_GEN_CTRL_3, + .ltssm_mask = IMX95_PCIE_LTSSM_EN, + .mode_off[0] = IMX95_PE0_GEN_CTRL_1, + .mode_mask[0] = IMX95_PCIE_DEVICE_TYPE, + .init_phy = imx95_pcie_init_phy, + .epc_features = &imx95_pcie_epc_features, + .mode = DW_PCIE_EP_TYPE, + }, }; static const struct of_device_id imx6_pcie_of_match[] = { @@ -1575,6 +1621,7 @@ static const struct of_device_id imx6_pcie_of_match[] = { { .compatible = "fsl,imx8mq-pcie-ep", .data = &drvdata[IMX8MQ_EP], }, { .compatible = "fsl,imx8mm-pcie-ep", .data = &drvdata[IMX8MM_EP], }, { .compatible = "fsl,imx8mp-pcie-ep", .data = &drvdata[IMX8MP_EP], }, + { .compatible = "fsl,imx95-pcie-ep", .data = &drvdata[IMX95_EP], }, {}, };