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b=hTR03CroR0Y+5HzNjjH7QJ1CdyYVV2zL80bNyPCNd4uR75kV+FQiNNfKVioP2PvKQ9TRTcBSbhq8m5CR8D6IqeCK6McJ02P52Xo05VJXmXLU1l5YhTSlUwAmwSQ6IwTkK7Fyevn+StPgb9Uxtb5kpQEmTL7Mjm5WGdcM4ayFRkU= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nxp.com; Received: from AS8PR04MB7511.eurprd04.prod.outlook.com (2603:10a6:20b:23f::5) by AS4PR04MB9338.eurprd04.prod.outlook.com (2603:10a6:20b:4e6::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7159.21; Mon, 8 Jan 2024 23:22:11 +0000 Received: from AS8PR04MB7511.eurprd04.prod.outlook.com ([fe80::8ee3:bac5:a2da:d469]) by AS8PR04MB7511.eurprd04.prod.outlook.com ([fe80::8ee3:bac5:a2da:d469%4]) with mapi id 15.20.7159.020; Mon, 8 Jan 2024 23:22:11 +0000 From: Frank Li To: krzysztof.kozlowski@linaro.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, 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, lpieralisi@kernel.org, manivannan.sadhasivam@linaro.org, robh@kernel.org, s.hauer@pengutronix.de, shawnguo@kernel.org Subject: [PATCH v8 01/16] PCI: imx6: Simplify clock handling by using clk_bulk*() function Date: Mon, 8 Jan 2024 18:21:30 -0500 Message-Id: <20240108232145.2116455-2-Frank.Li@nxp.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240108232145.2116455-1-Frank.Li@nxp.com> References: <20240108232145.2116455-1-Frank.Li@nxp.com> X-ClientProxiedBy: BYAPR02CA0063.namprd02.prod.outlook.com (2603:10b6:a03:54::40) To AS8PR04MB7511.eurprd04.prod.outlook.com (2603:10a6:20b:23f::5) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AS8PR04MB7511:EE_|AS4PR04MB9338:EE_ X-MS-Office365-Filtering-Correlation-Id: 27349c58-539d-4978-9c5a-08dc10a0a3d3 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. Signed-off-by: Frank Li Reviewed-by: Manivannan Sadhasivam --- Notes: 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 | 144 ++++++++++---------------- 1 file changed, 54 insertions(+), 90 deletions(-) diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c index 74703362aeec7..4912c6b08ecf8 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 +1266,18 @@ 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 +1300,6 @@ 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 +1315,6 @@ 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 +1405,15 @@ static void imx6_pcie_shutdown(struct platform_device *pdev) imx6_pcie_assert_core_reset(imx6_pcie); } +static const char * const +imx6_3clks_bus_pcie_phy[] = {"pcie_bus", "pcie", "pcie_phy"}; +static const char * const +imx6_3clks_bus_pcie_aux[] = {"pcie_bus", "pcie", "pcie_aux"}; +static const char * const +imx6_4clks_bus_pcie_phy_aux[] = {"pcie_bus", "pcie", "pcie_phy", "pcie_aux"}; +static const char * const +imx6_4clks_bus_pcie_phy_axi[] = {"pcie_bus", "pcie", "pcie_phy", "pcie_inbound_axi"}; + static const struct imx6_pcie_drvdata drvdata[] = { [IMX6Q] = { .variant = IMX6Q, @@ -1477,6 +1421,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { IMX6_PCIE_FLAG_IMX6_SPEED_CHANGE, .dbi_length = 0x200, .gpr = "fsl,imx6q-iomuxc-gpr", + .clk_names = imx6_3clks_bus_pcie_phy, + .clks_cnt = ARRAY_SIZE(imx6_3clks_bus_pcie_phy), }, [IMX6SX] = { .variant = IMX6SX, @@ -1484,6 +1430,8 @@ 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 = imx6_4clks_bus_pcie_phy_axi, + .clks_cnt = ARRAY_SIZE(imx6_4clks_bus_pcie_phy_axi), }, [IMX6QP] = { .variant = IMX6QP, @@ -1492,40 +1440,56 @@ static const struct imx6_pcie_drvdata drvdata[] = { IMX6_PCIE_FLAG_SUPPORTS_SUSPEND, .dbi_length = 0x200, .gpr = "fsl,imx6q-iomuxc-gpr", + .clk_names = imx6_3clks_bus_pcie_phy, + .clks_cnt = ARRAY_SIZE(imx6_3clks_bus_pcie_phy), }, [IMX7D] = { .variant = IMX7D, .flags = IMX6_PCIE_FLAG_SUPPORTS_SUSPEND, .gpr = "fsl,imx7d-iomuxc-gpr", + .clk_names = imx6_3clks_bus_pcie_phy, + .clks_cnt = ARRAY_SIZE(imx6_3clks_bus_pcie_phy), }, [IMX8MQ] = { .variant = IMX8MQ, .gpr = "fsl,imx8mq-iomuxc-gpr", + .clk_names = imx6_4clks_bus_pcie_phy_aux, + .clks_cnt = ARRAY_SIZE(imx6_4clks_bus_pcie_phy_aux), }, [IMX8MM] = { .variant = IMX8MM, .flags = IMX6_PCIE_FLAG_SUPPORTS_SUSPEND, .gpr = "fsl,imx8mm-iomuxc-gpr", + .clk_names = imx6_3clks_bus_pcie_aux, + .clks_cnt = ARRAY_SIZE(imx6_3clks_bus_pcie_aux), }, [IMX8MP] = { .variant = IMX8MP, .flags = IMX6_PCIE_FLAG_SUPPORTS_SUSPEND, .gpr = "fsl,imx8mp-iomuxc-gpr", + .clk_names = imx6_3clks_bus_pcie_aux, + .clks_cnt = ARRAY_SIZE(imx6_3clks_bus_pcie_aux), }, [IMX8MQ_EP] = { .variant = IMX8MQ_EP, .mode = DW_PCIE_EP_TYPE, .gpr = "fsl,imx8mq-iomuxc-gpr", + .clk_names = imx6_4clks_bus_pcie_phy_aux, + .clks_cnt = ARRAY_SIZE(imx6_4clks_bus_pcie_phy_aux), }, [IMX8MM_EP] = { .variant = IMX8MM_EP, .mode = DW_PCIE_EP_TYPE, .gpr = "fsl,imx8mm-iomuxc-gpr", + .clk_names = imx6_3clks_bus_pcie_aux, + .clks_cnt = ARRAY_SIZE(imx6_3clks_bus_pcie_aux), }, [IMX8MP_EP] = { .variant = IMX8MP_EP, .mode = DW_PCIE_EP_TYPE, .gpr = "fsl,imx8mp-iomuxc-gpr", + .clk_names = imx6_3clks_bus_pcie_aux, + .clks_cnt = ARRAY_SIZE(imx6_3clks_bus_pcie_aux), }, }; 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Reduce switch-case structure for handling phy. Signed-off-by: Frank Li Reviewed-by: Manivannan Sadhasivam --- Notes: 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 4912c6b08ecf8..adc90099ec7f8 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 IMX7D: if (dbi_base->start == IMX8MQ_PCIE2_BASE_ADDR) @@ -1306,11 +1316,6 @@ 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; @@ -1458,14 +1463,17 @@ 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 = imx6_3clks_bus_pcie_aux, .clks_cnt = ARRAY_SIZE(imx6_3clks_bus_pcie_aux), }, [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 = imx6_3clks_bus_pcie_aux, .clks_cnt = ARRAY_SIZE(imx6_3clks_bus_pcie_aux), @@ -1479,6 +1487,7 @@ 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 = imx6_3clks_bus_pcie_aux, @@ -1486,6 +1495,7 @@ 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 = imx6_3clks_bus_pcie_aux, From patchwork Mon Jan 8 23:21:32 2024 Content-Type: text/plain; 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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: d4fa8340-0f75-47b1-b71e-08dc10a0aabc X-MS-Exchange-CrossTenant-AuthSource: AS8PR04MB7511.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Jan 2024 23:22:22.7987 (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: B8DWkAYR9kcCTKhP7+jQU2+nT3IViHOlDh52IaTeWn7z9FjI8E20nGwyViN0aThgpsPbVLJuuat+r4jUTPt6VA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AS4PR04MB9338 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240108_152230_915401_03A95E7B X-CRM114-Status: GOOD ( 18.02 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Refactors the reset handling logic in the imx6 PCI driver by adding IMX6_PCIE_FLAG_HAS_*_RESET bitmask define for drvdata::flags. 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 adc90099ec7f8..a1194f0a4c084 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) @@ -1287,36 +1265,24 @@ static int imx6_pcie_probe(struct platform_device *pdev) "failed to get pcie phy\n"); } - switch (imx6_pcie->drvdata->variant) { - 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 (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"); + } - break; + 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 IMX7D: + if (dbi_base->start == IMX8MQ_PCIE2_BASE_ADDR) + imx6_pcie->controller_id = 1; default: break; } @@ -1450,13 +1416,17 @@ 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 = imx6_3clks_bus_pcie_phy, .clks_cnt = ARRAY_SIZE(imx6_3clks_bus_pcie_phy), }, [IMX8MQ] = { .variant = IMX8MQ, + .flags = IMX6_PCIE_FLAG_HAS_APP_RESET | + IMX6_PCIE_FLAG_HAS_PHY_RESET, .gpr = "fsl,imx8mq-iomuxc-gpr", .clk_names = imx6_4clks_bus_pcie_phy_aux, .clks_cnt = ARRAY_SIZE(imx6_4clks_bus_pcie_phy_aux), @@ -1473,13 +1443,16 @@ 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 = imx6_3clks_bus_pcie_aux, .clks_cnt = ARRAY_SIZE(imx6_3clks_bus_pcie_aux), }, [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 = imx6_4clks_bus_pcie_phy_aux, From patchwork Mon Jan 8 23:21:33 2024 Content-Type: text/plain; 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Adds "linux,pci-domain" as required property for iMX8MQ to indicate pci controller index. This adjustment paves the way for eliminating the hardcoded check on the base register for acquiring the controller_id. ... if (dbi_base->start == IMX8MQ_PCIE2_BASE_ADDR) imx6_pcie->controller_id = 1; ... The controller_id is crucial and utilized for certain register bit positions. It must align precisely with the controller index in the SoC. An auto-incremented ID don't fit this case. The DTS or fuse configurations may deactivate specific PCI controllers. Signed-off-by: Frank Li Reviewed-by: Rob Herring --- Notes: Keep current to avoid DTB_CHECK warning. After these patch merged. Will add linux,pci-domain in all dts file. So dt-binding can remove condition check by soc. Change from v5 to v6 - rework commit message to explain why need required and why auto increase id not work Change from v4 to v5 - new patch at v5 .../bindings/pci/fsl,imx6q-pcie-common.yaml | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-common.yaml b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-common.yaml index d91b639ae7ae7..8f39b4e6e8491 100644 --- a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-common.yaml +++ b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-common.yaml @@ -265,6 +265,17 @@ allOf: - const: apps - const: turnoff + - if: + properties: + compatible: + contains: + enum: + - fsl,imx8mq-pcie + - fsl,imx8mq-pcie-ep + then: + required: + - linux,pci-domain + additionalProperties: true ... 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If there are more than 2 slots, compared logic will become complex. "linux,pci-domain" already exist at dts since commit: commit (c0b70f05c87f3b arm64: dts: imx8mq: use_dt_domains for pci node). So it is safe to remove compare basic address code: ... if (dbi_base->start == IMX8MQ_PCIE2_BASE_ADDR) imx6_pcie->controller_id = 1; ... Reviewed-by: Manivannan Sadhasivam Signed-off-by: Frank Li --- Notes: Change from v7 to v8 - fixed comments - Added Manivannan Sadhasivam's review tag Change from v5 to v7 - none Change from v3 to v4 - remove compare basic address logic Change from v2 to v3 - none Change from v1 to v2 - fix of_get_pci_domain_nr return value check logic drivers/pci/controller/dwc/pci-imx6.c | 20 ++++++++++++-------- 1 file changed, 12 insertions(+), 8 deletions(-) diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c index a1194f0a4c084..06aa40a185283 100644 --- a/drivers/pci/controller/dwc/pci-imx6.c +++ b/drivers/pci/controller/dwc/pci-imx6.c @@ -33,6 +33,7 @@ #include #include +#include "../../pci.h" #include "pcie-designware.h" #define IMX8MQ_GPR_PCIE_REF_USE_PAD BIT(9) @@ -40,7 +41,6 @@ #define IMX8MQ_GPR_PCIE_CLK_REQ_OVERRIDE BIT(11) #define IMX8MQ_GPR_PCIE_VREG_BYPASS BIT(12) #define IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE GENMASK(11, 8) -#define IMX8MQ_PCIE2_BASE_ADDR 0x33c00000 #define to_imx6_pcie(x) dev_get_drvdata((x)->dev) @@ -1279,13 +1279,17 @@ static int imx6_pcie_probe(struct platform_device *pdev) "Failed to get PCIEPHY reset control\n"); } - switch (imx6_pcie->drvdata->variant) { - case IMX7D: - if (dbi_base->start == IMX8MQ_PCIE2_BASE_ADDR) - imx6_pcie->controller_id = 1; - default: - break; - } + /* Using linux,pci-domain as PCI slot id */ + imx6_pcie->controller_id = of_get_pci_domain_nr(node); + /* + * If there are no "linux,pci-domain" property specified in DT, then assume only one + * controller is available. + */ + if (imx6_pcie->controller_id == -EINVAL) + imx6_pcie->controller_id = 0; + else if (imx6_pcie->controller_id < 0) + return dev_err_probe(dev, imx6_pcie->controller_id, + "linux,pci-domain have wrong value\n"); /* Grab turnoff reset */ imx6_pcie->turnoff_reset = devm_reset_control_get_optional_exclusive(dev, "turnoff"); From patchwork Mon Jan 8 23:21:35 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Li X-Patchwork-Id: 13514162 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 02B20C47077 for ; 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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 06aa40a185283..818e73157e724 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); } @@ -1398,6 +1387,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { .gpr = "fsl,imx6q-iomuxc-gpr", .clk_names = imx6_3clks_bus_pcie_phy, .clks_cnt = ARRAY_SIZE(imx6_3clks_bus_pcie_phy), + .ltssm_off = IOMUXC_GPR12, + .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2, }, [IMX6SX] = { .variant = IMX6SX, @@ -1407,6 +1398,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { .gpr = "fsl,imx6q-iomuxc-gpr", .clk_names = imx6_4clks_bus_pcie_phy_axi, .clks_cnt = ARRAY_SIZE(imx6_4clks_bus_pcie_phy_axi), + .ltssm_off = IOMUXC_GPR12, + .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2, }, [IMX6QP] = { .variant = IMX6QP, @@ -1417,6 +1410,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { .gpr = "fsl,imx6q-iomuxc-gpr", .clk_names = imx6_3clks_bus_pcie_phy, .clks_cnt = ARRAY_SIZE(imx6_3clks_bus_pcie_phy), + .ltssm_off = IOMUXC_GPR12, + .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2, }, [IMX7D] = { .variant = IMX7D, From patchwork Mon Jan 8 23:21:36 2024 Content-Type: text/plain; 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Signed-off-by: Frank Li Reviewed-by: Manivannan Sadhasivam --- Notes: 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 818e73157e724..fd83af238fa60 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) @@ -1389,6 +1384,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { .clks_cnt = ARRAY_SIZE(imx6_3clks_bus_pcie_phy), .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, @@ -1400,6 +1397,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { .clks_cnt = ARRAY_SIZE(imx6_4clks_bus_pcie_phy_axi), .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, @@ -1412,6 +1411,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { .clks_cnt = ARRAY_SIZE(imx6_3clks_bus_pcie_phy), .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, @@ -1421,6 +1422,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { .gpr = "fsl,imx7d-iomuxc-gpr", .clk_names = imx6_3clks_bus_pcie_phy, .clks_cnt = ARRAY_SIZE(imx6_3clks_bus_pcie_phy), + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, }, [IMX8MQ] = { .variant = IMX8MQ, @@ -1429,6 +1432,10 @@ static const struct imx6_pcie_drvdata drvdata[] = { .gpr = "fsl,imx8mq-iomuxc-gpr", .clk_names = imx6_4clks_bus_pcie_phy_aux, .clks_cnt = ARRAY_SIZE(imx6_4clks_bus_pcie_phy_aux), + .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, @@ -1438,6 +1445,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { .gpr = "fsl,imx8mm-iomuxc-gpr", .clk_names = imx6_3clks_bus_pcie_aux, .clks_cnt = ARRAY_SIZE(imx6_3clks_bus_pcie_aux), + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, }, [IMX8MP] = { .variant = IMX8MP, @@ -1447,6 +1456,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { .gpr = "fsl,imx8mp-iomuxc-gpr", .clk_names = imx6_3clks_bus_pcie_aux, .clks_cnt = ARRAY_SIZE(imx6_3clks_bus_pcie_aux), + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, }, [IMX8MQ_EP] = { .variant = IMX8MQ_EP, @@ -1456,6 +1467,10 @@ static const struct imx6_pcie_drvdata drvdata[] = { .gpr = "fsl,imx8mq-iomuxc-gpr", .clk_names = imx6_4clks_bus_pcie_phy_aux, .clks_cnt = ARRAY_SIZE(imx6_4clks_bus_pcie_phy_aux), + .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, @@ -1464,6 +1479,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { .gpr = "fsl,imx8mm-iomuxc-gpr", .clk_names = imx6_3clks_bus_pcie_aux, .clks_cnt = ARRAY_SIZE(imx6_3clks_bus_pcie_aux), + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, }, [IMX8MP_EP] = { .variant = IMX8MP_EP, @@ -1472,6 +1489,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { .gpr = "fsl,imx8mp-iomuxc-gpr", .clk_names = imx6_3clks_bus_pcie_aux, .clks_cnt = ARRAY_SIZE(imx6_3clks_bus_pcie_aux), + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, }, }; 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b=huWoye28jHBWI8x7QOQaSsrJkZUP2Yd71CQ3u34GkR3tVVELKYRKDQYaNPmQ+p6gcaD9LAI3eJciBwKdnorN/d7+depJ/3GGKKLnPmYmJ56uph/5D3iMibDox3En7hwLZpB1cb//8Akk0z0/AMxrC2aBfKenY6tIYGBobWBHsds= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nxp.com; Received: from AS8PR04MB7511.eurprd04.prod.outlook.com (2603:10a6:20b:23f::5) by AS4PR04MB9338.eurprd04.prod.outlook.com (2603:10a6:20b:4e6::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7159.21; Mon, 8 Jan 2024 23:22:49 +0000 Received: from AS8PR04MB7511.eurprd04.prod.outlook.com ([fe80::8ee3:bac5:a2da:d469]) by AS8PR04MB7511.eurprd04.prod.outlook.com ([fe80::8ee3:bac5:a2da:d469%4]) with mapi id 15.20.7159.020; Mon, 8 Jan 2024 23:22:49 +0000 From: Frank Li To: krzysztof.kozlowski@linaro.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, 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, lpieralisi@kernel.org, manivannan.sadhasivam@linaro.org, robh@kernel.org, s.hauer@pengutronix.de, shawnguo@kernel.org Subject: [PATCH v8 08/16] PCI: imx6: Simplify switch-case logic by involve init_phy callback Date: Mon, 8 Jan 2024 18:21:37 -0500 Message-Id: <20240108232145.2116455-9-Frank.Li@nxp.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240108232145.2116455-1-Frank.Li@nxp.com> References: <20240108232145.2116455-1-Frank.Li@nxp.com> X-ClientProxiedBy: BYAPR02CA0063.namprd02.prod.outlook.com (2603:10b6:a03:54::40) To AS8PR04MB7511.eurprd04.prod.outlook.com (2603:10a6:20b:23f::5) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AS8PR04MB7511:EE_|AS4PR04MB9338:EE_ X-MS-Office365-Filtering-Correlation-Id: 280a0842-eca6-4481-113b-08dc10a0bab8 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Signed-off-by: Frank Li Reviewed-by: Manivannan Sadhasivam --- 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 fd83af238fa60..ac338a88fe21e 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) { @@ -1386,6 +1384,7 @@ 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, @@ -1399,6 +1398,7 @@ 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, @@ -1413,6 +1413,7 @@ 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, @@ -1424,6 +1425,7 @@ static const struct imx6_pcie_drvdata drvdata[] = { .clks_cnt = ARRAY_SIZE(imx6_3clks_bus_pcie_phy), .mode_off[0] = IOMUXC_GPR12, .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, + .init_phy = imx7d_pcie_init_phy, }, [IMX8MQ] = { .variant = IMX8MQ, @@ -1436,6 +1438,7 @@ 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, @@ -1471,6 +1474,7 @@ 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 Jan 8 23:21:38 2024 Content-Type: text/plain; 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X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The bindings referencing this file already define these constraints for each of the variants, so the if not: then: is redundant. 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 8f39b4e6e8491..a284a27c5e873 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 Jan 8 23:21:39 2024 Content-Type: text/plain; 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X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org snps,dw-pcie.yaml already have reg and reg-name information. 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. 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 Jan 8 23:21:40 2024 Content-Type: text/plain; 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X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Richard Zhu Add i.MX95 PCIe "fsl,imx95-pcie" compatible string. Add "atu" and "app" to reg-names. Signed-off-by: Richard Zhu Signed-off-by: Frank Li Reviewed-by: Rob Herring --- Notes: 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 a284a27c5e873..1b63089ff0aee 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 Jan 8 23:21:41 2024 Content-Type: text/plain; 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Signed-off-by: Frank Li Reviewed-by: Manivannan Sadhasivam --- Notes: 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 ac338a88fe21e..c0d08cd55d681 100644 --- a/drivers/pci/controller/dwc/pci-imx6.c +++ b/drivers/pci/controller/dwc/pci-imx6.c @@ -42,6 +42,25 @@ #define IMX8MQ_GPR_PCIE_VREG_BYPASS BIT(12) #define IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE GENMASK(11, 8) +#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: @@ -1280,12 +1320,32 @@ 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 */ @@ -1462,6 +1522,17 @@ 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 = imx6_4clks_bus_pcie_phy_aux, + .clks_cnt = ARRAY_SIZE(imx6_4clks_bus_pcie_phy_aux), + .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 | @@ -1506,6 +1577,7 @@ 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 Jan 8 23:21:42 2024 Content-Type: text/plain; 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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 c0d08cd55d681..1741af88040be 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 Jan 8 23:21:43 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Li X-Patchwork-Id: 13514177 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 81A7CC3DA6E for ; Mon, 8 Jan 2024 23:23:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; 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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 1741af88040be..3f474d4749dce 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 = { @@ -1538,6 +1542,7 @@ 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] = { @@ -1549,6 +1554,7 @@ static const struct imx6_pcie_drvdata drvdata[] = { .clks_cnt = ARRAY_SIZE(imx6_3clks_bus_pcie_aux), .mode_off[0] = IOMUXC_GPR12, .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, + .epc_features = &imx8m_pcie_epc_features, }, [IMX8MP_EP] = { .variant = IMX8MP_EP, @@ -1559,6 +1565,7 @@ static const struct imx6_pcie_drvdata drvdata[] = { .clks_cnt = ARRAY_SIZE(imx6_3clks_bus_pcie_aux), .mode_off[0] = IOMUXC_GPR12, .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, + .epc_features = &imx8m_pcie_epc_features, }, }; 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X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add i.MX95 PCIe "fsl,imx95-pcie-ep" compatible string. Add reg-name: "atu", "dbi2", "dma" and "app". Reuse PCI linux,pci-domain as controller id at endpoint. Signed-off-by: Frank Li Reviewed-by: Rob Herring --- Notes: Change from v1 to v3 - new patches at v3 .../bindings/pci/fsl,imx6q-pcie-ep.yaml | 57 ++++++++++++++++--- 1 file changed, 49 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..f4d6ae5dab785 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: @@ -87,6 +117,17 @@ allOf: - const: pcie_bus - const: pcie_aux +# reuse PCI linux,pci-domain as controller id at Endpoint + - if: + properties: + compatible: + enum: + - fsl,imx95-pcie-ep + then: + properties: + linux,pci-domain: true + required: + - linux,pci-domain unevaluatedProperties: false From patchwork Mon Jan 8 23:21:45 2024 Content-Type: text/plain; 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Internal bus bridge for PCI support 64bit dma address in iMX95. Hence, call dma_set_mask_and_coherent() to set 64 bit DMA mask. Signed-off-by: Frank Li Reviewed-by: Manivannan Sadhasivam --- Notes: 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 | 46 +++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c index 3f474d4749dce..69ba72c3a9c9c 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 + * | (If BAR0 is 64-bit) | (if BAR0 is 32-bit) | (if BAR0 is 32-bit) | As 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 +1112,14 @@ static int imx6_add_pcie_ep(struct imx6_pcie *imx6_pcie, pci->dbi_base2 = pci->dbi_base + pcie_dbi2_offset; + /* + * FIXME: dbi2 information should fetch from dtb file. dw_pcie_ep_init() can get dbi_base2 + * from "dbi2" if pci->dbi_base2 is NULL. All code related pcie_dbi2_offset should be + * removed after all dts added "dbi2" reg. + */ + if (imx6_pcie->drvdata->variant == IMX95_EP) + pci->dbi_base2 = NULL; + ret = dw_pcie_ep_init(ep); if (ret) { dev_err(dev, "failed to initialize endpoint\n"); @@ -1345,6 +1373,9 @@ 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)) @@ -1567,6 +1598,20 @@ 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 = imx6_4clks_bus_pcie_phy_aux, + .clks_cnt = ARRAY_SIZE(imx6_4clks_bus_pcie_phy_aux), + .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[] = { @@ -1581,6 +1626,7 @@ 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], }, {}, };