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Wed, 15 Nov 2023 03:25:39 +0000 Received: from nasanex01c.na.qualcomm.com (nasanex01c.na.qualcomm.com [10.45.79.139]) by NASANPPMTA05.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 3AF3PdaH016200 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 15 Nov 2023 03:25:39 GMT Received: from akronite-sh-dev02.qualcomm.com (10.80.80.8) by nasanex01c.na.qualcomm.com (10.45.79.139) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.39; Tue, 14 Nov 2023 19:25:34 -0800 From: Luo Jie To: , , , , , , , , , , , , , CC: , , , , Subject: [PATCH 2/9] net: mdio: ipq4019: Enable the clocks for ipq5332 platform Date: Wed, 15 Nov 2023 11:25:08 +0800 Message-ID: <20231115032515.4249-3-quic_luoj@quicinc.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231115032515.4249-1-quic_luoj@quicinc.com> References: <20231115032515.4249-1-quic_luoj@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nasanex01c.na.qualcomm.com (10.45.79.139) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: FOHgjdOsE8aPEiwjEgtTyPlMMSho_lpP X-Proofpoint-GUID: FOHgjdOsE8aPEiwjEgtTyPlMMSho_lpP X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.987,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-11-15_01,2023-11-14_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 lowpriorityscore=0 adultscore=0 clxscore=1015 spamscore=0 bulkscore=0 phishscore=0 mlxscore=0 mlxlogscore=999 priorityscore=1501 suspectscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311060000 definitions=main-2311150027 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_BLOCKED, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham 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-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (snail.vger.email [0.0.0.0]); Tue, 14 Nov 2023 19:26:08 -0800 (PST) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1782598937263636176 X-GMAIL-MSGID: 1782598937263636176 For the platform ipq5332, the related GCC clocks need to be enabled to make the GPIO reset of the MDIO slave devices taking effect. Signed-off-by: Luo Jie --- drivers/net/mdio/mdio-ipq4019.c | 67 +++++++++++++++++++++++++++++---- 1 file changed, 60 insertions(+), 7 deletions(-) diff --git a/drivers/net/mdio/mdio-ipq4019.c b/drivers/net/mdio/mdio-ipq4019.c index 9d444f5f7efb..a77982a1a1e1 100644 --- a/drivers/net/mdio/mdio-ipq4019.c +++ b/drivers/net/mdio/mdio-ipq4019.c @@ -34,16 +34,35 @@ /* MDIO clock source frequency is fixed to 100M */ #define IPQ_MDIO_CLK_RATE 100000000 +#define IPQ_UNIPHY_AHB_CLK_RATE 100000000 +#define IPQ_UNIPHY_SYS_CLK_RATE 24000000 #define IPQ_PHY_SET_DELAY_US 100000 /* Maximum SOC PCS(uniphy) number on IPQ platform */ #define ETH_LDO_RDY_CNT 3 +enum mdio_clk_id { + MDIO_CLK_MDIO_AHB, + MDIO_CLK_UNIPHY0_AHB, + MDIO_CLK_UNIPHY0_SYS, + MDIO_CLK_UNIPHY1_AHB, + MDIO_CLK_UNIPHY1_SYS, + MDIO_CLK_CNT +}; + struct ipq4019_mdio_data { void __iomem *membase; void __iomem *eth_ldo_rdy[ETH_LDO_RDY_CNT]; - struct clk *mdio_clk; + struct clk *clk[MDIO_CLK_CNT]; +}; + +const char *const mdio_clk_name[] = { + "gcc_mdio_ahb_clk", + "gcc_uniphy0_ahb_clk", + "gcc_uniphy0_sys_clk", + "gcc_uniphy1_ahb_clk", + "gcc_uniphy1_sys_clk" }; static int ipq4019_mdio_wait_busy(struct mii_bus *bus) @@ -212,6 +231,38 @@ static int ipq_mdio_reset(struct mii_bus *bus) u32 val; int ret; + /* For the platform ipq5332, there are two uniphy available to connect the + * ethernet devices, the uniphy gcc clock should be enabled for resetting + * the connected device such as qca8386 switch or qca8081 PHY effectively. + */ + if (of_device_is_compatible(bus->parent->of_node, "qcom,ipq5332-mdio")) { + int i; + unsigned long rate = 0; + + for (i = MDIO_CLK_UNIPHY0_AHB; i < MDIO_CLK_CNT; i++) { + switch (i) { + case MDIO_CLK_UNIPHY0_AHB: + case MDIO_CLK_UNIPHY1_AHB: + rate = IPQ_UNIPHY_AHB_CLK_RATE; + break; + case MDIO_CLK_UNIPHY0_SYS: + case MDIO_CLK_UNIPHY1_SYS: + rate = IPQ_UNIPHY_SYS_CLK_RATE; + break; + default: + break; + } + + ret = clk_set_rate(priv->clk[i], rate); + if (ret) + return ret; + + ret = clk_prepare_enable(priv->clk[i]); + if (ret) + return ret; + } + } + /* To indicate CMN_PLL that ethernet_ldo has been ready if platform resource 1 * or more resource are specified in the device tree. */ @@ -225,11 +276,11 @@ static int ipq_mdio_reset(struct mii_bus *bus) } /* Configure MDIO clock source frequency if clock is specified in the device tree */ - ret = clk_set_rate(priv->mdio_clk, IPQ_MDIO_CLK_RATE); + ret = clk_set_rate(priv->clk[MDIO_CLK_MDIO_AHB], IPQ_MDIO_CLK_RATE); if (ret) return ret; - ret = clk_prepare_enable(priv->mdio_clk); + ret = clk_prepare_enable(priv->clk[MDIO_CLK_MDIO_AHB]); if (ret == 0) mdelay(10); @@ -253,10 +304,6 @@ static int ipq4019_mdio_probe(struct platform_device *pdev) if (IS_ERR(priv->membase)) return PTR_ERR(priv->membase); - priv->mdio_clk = devm_clk_get_optional(&pdev->dev, "gcc_mdio_ahb_clk"); - if (IS_ERR(priv->mdio_clk)) - return PTR_ERR(priv->mdio_clk); - /* The platform resource is provided on the chipset IPQ5018/IPQ5332 */ /* This resource is optional */ for (ret = 0; ret < ETH_LDO_RDY_CNT; ret++) { @@ -266,6 +313,12 @@ static int ipq4019_mdio_probe(struct platform_device *pdev) res->start, resource_size(res)); } + for (ret = 0; ret < MDIO_CLK_CNT; ret++) { + priv->clk[ret] = devm_clk_get_optional(&pdev->dev, mdio_clk_name[ret]); + if (IS_ERR(priv->clk[ret])) + return PTR_ERR(priv->clk[ret]); + } + bus->name = "ipq4019_mdio"; bus->read = ipq4019_mdio_read_c22; bus->write = ipq4019_mdio_write_c22;