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Received: from DU0PR04MB9417.eurprd04.prod.outlook.com (2603:10a6:10:358::11) by PR3PR04MB7356.eurprd04.prod.outlook.com (2603:10a6:102:8d::10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6254.21; Fri, 31 Mar 2023 06:33:37 +0000 Received: from DU0PR04MB9417.eurprd04.prod.outlook.com ([fe80::778e:19d0:cba0:5cc0]) by DU0PR04MB9417.eurprd04.prod.outlook.com ([fe80::778e:19d0:cba0:5cc0%4]) with mapi id 15.20.6222.028; Fri, 31 Mar 2023 06:33:37 +0000 From: "Peng Fan (OSS)" To: abelvesa@kernel.org, abel.vesa@linaro.org, mturquette@baylibre.com, sboyd@kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com Cc: linux-imx@nxp.com, linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Jacky Bai , Peng Fan Subject: [PATCH 2/5] clk: imx: imx8ulp: Add divider closest support to get more accurate clock rate Date: Fri, 31 Mar 2023 14:38:11 +0800 Message-Id: <20230331063814.2462059-3-peng.fan@oss.nxp.com> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20230331063814.2462059-1-peng.fan@oss.nxp.com> References: <20230331063814.2462059-1-peng.fan@oss.nxp.com> X-ClientProxiedBy: SG2P153CA0030.APCP153.PROD.OUTLOOK.COM (2603:1096:4:c7::17) To DU0PR04MB9417.eurprd04.prod.outlook.com (2603:10a6:10:358::11) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DU0PR04MB9417:EE_|PR3PR04MB7356:EE_ X-MS-Office365-Filtering-Correlation-Id: aa69b31c-d622-4d32-486d-08db31b1dbde X-MS-Exchange-SharedMailbox-RoutingAgent-Processed: True 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: oss.nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: aa69b31c-d622-4d32-486d-08db31b1dbde X-MS-Exchange-CrossTenant-AuthSource: DU0PR04MB9417.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 31 Mar 2023 06:33:37.4104 (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: pTqe7ll0Uh7cfrj3yU78I02GYfIafA3bVg6d/Ulj5aG4p2eXe4/LeFZBOTJFIdfk3NT8IHdv4hnDqR7mmusoVA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PR3PR04MB7356 X-Spam-Status: No, score=-0.0 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1761864475030275854?= X-GMAIL-MSGID: =?utf-8?q?1761864475030275854?= From: Jacky Bai If a divider's parent clock has fractional part, it will hard to round out a more accurate clock rate for this divider, add the 'CLK_DIVIDER_ROUND_CLOSEST' flags for such divider to get a more accurate clock rate. Reviewed-by: Peng Fan Signed-off-by: Jacky Bai Signed-off-by: Peng Fan Reviewed-by: Abel Vesa --- drivers/clk/imx/clk-imx8ulp.c | 16 ++++++++-------- drivers/clk/imx/clk.h | 9 +++++++++ 2 files changed, 17 insertions(+), 8 deletions(-) diff --git a/drivers/clk/imx/clk-imx8ulp.c b/drivers/clk/imx/clk-imx8ulp.c index 89121037a8f0..3cf4b094dfff 100644 --- a/drivers/clk/imx/clk-imx8ulp.c +++ b/drivers/clk/imx/clk-imx8ulp.c @@ -275,14 +275,14 @@ static int imx8ulp_clk_cgc2_init(struct platform_device *pdev) clks[IMX8ULP_CLK_PLL4_PFD2_DIV2_GATE] = imx_clk_hw_gate_dis("pll4_pfd2_div2_gate", "pll4_pfd2", base + 0x60c, 15); clks[IMX8ULP_CLK_PLL4_PFD3_DIV1_GATE] = imx_clk_hw_gate_dis("pll4_pfd3_div1_gate", "pll4_pfd3", base + 0x60c, 23); clks[IMX8ULP_CLK_PLL4_PFD3_DIV2_GATE] = imx_clk_hw_gate_dis("pll4_pfd3_div2_gate", "pll4_pfd3", base + 0x60c, 31); - clks[IMX8ULP_CLK_PLL4_PFD0_DIV1] = imx_clk_hw_divider("pll4_pfd0_div1", "pll4_pfd0_div1_gate", base + 0x608, 0, 6); - clks[IMX8ULP_CLK_PLL4_PFD0_DIV2] = imx_clk_hw_divider("pll4_pfd0_div2", "pll4_pfd0_div2_gate", base + 0x608, 8, 6); - clks[IMX8ULP_CLK_PLL4_PFD1_DIV1] = imx_clk_hw_divider("pll4_pfd1_div1", "pll4_pfd1_div1_gate", base + 0x608, 16, 6); - clks[IMX8ULP_CLK_PLL4_PFD1_DIV2] = imx_clk_hw_divider("pll4_pfd1_div2", "pll4_pfd1_div2_gate", base + 0x608, 24, 6); - clks[IMX8ULP_CLK_PLL4_PFD2_DIV1] = imx_clk_hw_divider("pll4_pfd2_div1", "pll4_pfd2_div1_gate", base + 0x60c, 0, 6); - clks[IMX8ULP_CLK_PLL4_PFD2_DIV2] = imx_clk_hw_divider("pll4_pfd2_div2", "pll4_pfd2_div2_gate", base + 0x60c, 8, 6); - clks[IMX8ULP_CLK_PLL4_PFD3_DIV1] = imx_clk_hw_divider("pll4_pfd3_div1", "pll4_pfd3_div1_gate", base + 0x60c, 16, 6); - clks[IMX8ULP_CLK_PLL4_PFD3_DIV2] = imx_clk_hw_divider("pll4_pfd3_div2", "pll4_pfd3_div2_gate", base + 0x60c, 24, 6); + clks[IMX8ULP_CLK_PLL4_PFD0_DIV1] = imx_clk_hw_divider_closest("pll4_pfd0_div1", "pll4_pfd0_div1_gate", base + 0x608, 0, 6); + clks[IMX8ULP_CLK_PLL4_PFD0_DIV2] = imx_clk_hw_divider_closest("pll4_pfd0_div2", "pll4_pfd0_div2_gate", base + 0x608, 8, 6); + clks[IMX8ULP_CLK_PLL4_PFD1_DIV1] = imx_clk_hw_divider_closest("pll4_pfd1_div1", "pll4_pfd1_div1_gate", base + 0x608, 16, 6); + clks[IMX8ULP_CLK_PLL4_PFD1_DIV2] = imx_clk_hw_divider_closest("pll4_pfd1_div2", "pll4_pfd1_div2_gate", base + 0x608, 24, 6); + clks[IMX8ULP_CLK_PLL4_PFD2_DIV1] = imx_clk_hw_divider_closest("pll4_pfd2_div1", "pll4_pfd2_div1_gate", base + 0x60c, 0, 6); + clks[IMX8ULP_CLK_PLL4_PFD2_DIV2] = imx_clk_hw_divider_closest("pll4_pfd2_div2", "pll4_pfd2_div2_gate", base + 0x60c, 8, 6); + clks[IMX8ULP_CLK_PLL4_PFD3_DIV1] = imx_clk_hw_divider_closest("pll4_pfd3_div1", "pll4_pfd3_div1_gate", base + 0x60c, 16, 6); + clks[IMX8ULP_CLK_PLL4_PFD3_DIV2] = imx_clk_hw_divider_closest("pll4_pfd3_div2", "pll4_pfd3_div2_gate", base + 0x60c, 24, 6); clks[IMX8ULP_CLK_CGC2_SOSC_DIV1_GATE] = imx_clk_hw_gate_dis("cgc2_sosc_div1_gate", "sosc", base + 0x108, 7); clks[IMX8ULP_CLK_CGC2_SOSC_DIV2_GATE] = imx_clk_hw_gate_dis("cgc2_sosc_div2_gate", "sosc", base + 0x108, 15); diff --git a/drivers/clk/imx/clk.h b/drivers/clk/imx/clk.h index bb105d6e5b39..ca1f75eb3197 100644 --- a/drivers/clk/imx/clk.h +++ b/drivers/clk/imx/clk.h @@ -356,6 +356,15 @@ static inline struct clk_hw *imx_clk_hw_fixed_factor(const char *name, CLK_SET_RATE_PARENT, mult, div); } +static inline struct clk_hw *imx_clk_hw_divider_closest(const char *name, + const char *parent, + void __iomem *reg, u8 shift, + u8 width) +{ + return clk_hw_register_divider(NULL, name, parent, 0, + reg, shift, width, CLK_DIVIDER_ROUND_CLOSEST, &imx_ccm_lock); +} + static inline struct clk_hw *__imx_clk_hw_divider(const char *name, const char *parent, void __iomem *reg, u8 shift,