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b=PGW0KHzY5KtCf9OndBlQY2tgfRm6UfIg71jwqNM71w4rxsCHcSof/Yv8L124kw98ZrlOq85G1I2zOqIpUlgW3OdTt9xZfR+xwGfPC6BmUu7ixlByeHA9/rwx1MU9v+jwqdv6P/o7Uj4ZtIPOuCh+69x+mNRpCmt/iNtmQBloz923hXxn7ptxbq1ZmSjjEg1zoThHohVbN2XWoKmNg2urKZZBvqm6PQcFImS9HQxQCoJLxP11n1kosSZ65OVt5nrtaUqanFwnithnqJtuMVTv1PMm9P2REEvNrs3x6qVErSkRPZtvwgrjuKWG85H6QEwb8DGp8Qns18FJXIVaoQg2iA== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nxp.com; Received: from DU2PR04MB8822.eurprd04.prod.outlook.com (2603:10a6:10:2e1::11) by AM0PR04MB6851.eurprd04.prod.outlook.com (2603:10a6:208:182::9) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8048.18; Thu, 10 Oct 2024 09:07:20 +0000 Received: from DU2PR04MB8822.eurprd04.prod.outlook.com ([fe80::4e24:c2c7:bd58:c5c7]) by DU2PR04MB8822.eurprd04.prod.outlook.com ([fe80::4e24:c2c7:bd58:c5c7%4]) with mapi id 15.20.8048.013; Thu, 10 Oct 2024 09:07:19 +0000 From: Xu Yang To: vkoul@kernel.org, kishon@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, gregkh@linuxfoundation.org, peter.chen@kernel.org, herve.codina@bootlin.com Cc: linux-phy@lists.infradead.org, devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-usb@vger.kernel.org, jun.li@nxp.com Subject: [PATCH v7 1/3] phy: fsl-imx8mq-usb: add tca function driver for imx95 Date: Thu, 10 Oct 2024 17:08:20 +0800 Message-Id: <20241010090822.3915064-1-xu.yang_2@nxp.com> X-Mailer: git-send-email 2.34.1 X-ClientProxiedBy: SG2PR01CA0187.apcprd01.prod.exchangelabs.com (2603:1096:4:189::12) To DU2PR04MB8822.eurprd04.prod.outlook.com (2603:10a6:10:2e1::11) Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DU2PR04MB8822:EE_|AM0PR04MB6851:EE_ X-MS-Office365-Filtering-Correlation-Id: c333f29e-21f2-4a24-fb56-08dce90af1d4 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|52116014|366016|376014|1800799024|38350700014|921020; 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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: c333f29e-21f2-4a24-fb56-08dce90af1d4 X-MS-Exchange-CrossTenant-AuthSource: DU2PR04MB8822.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 10 Oct 2024 09:07:19.9436 (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: ORungtjuV7YyDDWcImTJMXjUS2XGpIEPHg61KIx4PbTn+P1Vy1nkPy2a3UvmU4SmzzACUCd7pLJyPf0Tfl41rw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR04MB6851 The i.MX95 USB3 phy has a Type-C Assist block (TCA). This block consists two functional blocks (XBar assist and VBus assist) and one system access interface using APB. The primary functionality of XBar assist is: - switching lane for flip - moving unused lanes into lower power states. This info can be get from: i.MX95 RM Chapter 163.3.8 Type-C assist (TCA) block. This will add support for TCA block to achieve lane switching and tca lower power functionality. Signed-off-by: Xu Yang Reviewed-by: Jun Li --- Changes in v2: - return the value of imx95_usb_phy_get_tca() Changes in v3: - no changes Changes in v4: - remove compatible check for imx95 - check whether tca register region exist or not, yes means has tca, otherwise skip tca setup Changes in v5: - no changes Changes in v6: - no changes Changes in v7: - fix sparse warnings in imx95_usb_phy_get_tca() --- drivers/phy/freescale/Kconfig | 1 + drivers/phy/freescale/phy-fsl-imx8mq-usb.c | 243 +++++++++++++++++++++ 2 files changed, 244 insertions(+) diff --git a/drivers/phy/freescale/Kconfig b/drivers/phy/freescale/Kconfig index dcd9acff6d01..81f53564ee15 100644 --- a/drivers/phy/freescale/Kconfig +++ b/drivers/phy/freescale/Kconfig @@ -5,6 +5,7 @@ if (ARCH_MXC && ARM64) || COMPILE_TEST config PHY_FSL_IMX8MQ_USB tristate "Freescale i.MX8M USB3 PHY" depends on OF && HAS_IOMEM + depends on TYPEC || TYPEC=n select GENERIC_PHY default ARCH_MXC && ARM64 diff --git a/drivers/phy/freescale/phy-fsl-imx8mq-usb.c b/drivers/phy/freescale/phy-fsl-imx8mq-usb.c index adc6394626ce..661191276b27 100644 --- a/drivers/phy/freescale/phy-fsl-imx8mq-usb.c +++ b/drivers/phy/freescale/phy-fsl-imx8mq-usb.c @@ -10,6 +10,7 @@ #include #include #include +#include #define PHY_CTRL0 0x0 #define PHY_CTRL0_REF_SSP_EN BIT(2) @@ -50,11 +51,66 @@ #define PHY_TUNE_DEFAULT 0xffffffff +#define TCA_CLK_RST 0x00 +#define TCA_CLK_RST_SW BIT(9) +#define TCA_CLK_RST_REF_CLK_EN BIT(1) +#define TCA_CLK_RST_SUSPEND_CLK_EN BIT(0) + +#define TCA_INTR_EN 0x04 +#define TCA_INTR_STS 0x08 + +#define TCA_GCFG 0x10 +#define TCA_GCFG_ROLE_HSTDEV BIT(4) +#define TCA_GCFG_OP_MODE GENMASK(1, 0) +#define TCA_GCFG_OP_MODE_SYSMODE 0 +#define TCA_GCFG_OP_MODE_SYNCMODE 1 + +#define TCA_TCPC 0x14 +#define TCA_TCPC_VALID BIT(4) +#define TCA_TCPC_LOW_POWER_EN BIT(3) +#define TCA_TCPC_ORIENTATION_NORMAL BIT(2) +#define TCA_TCPC_MUX_CONTRL GENMASK(1, 0) +#define TCA_TCPC_MUX_CONTRL_NO_CONN 0 +#define TCA_TCPC_MUX_CONTRL_USB_CONN 1 + +#define TCA_SYSMODE_CFG 0x18 +#define TCA_SYSMODE_TCPC_DISABLE BIT(3) +#define TCA_SYSMODE_TCPC_FLIP BIT(2) + +#define TCA_CTRLSYNCMODE_CFG0 0x20 +#define TCA_CTRLSYNCMODE_CFG1 0x20 + +#define TCA_PSTATE 0x30 +#define TCA_PSTATE_CM_STS BIT(4) +#define TCA_PSTATE_TX_STS BIT(3) +#define TCA_PSTATE_RX_PLL_STS BIT(2) +#define TCA_PSTATE_PIPE0_POWER_DOWN GENMASK(1, 0) + +#define TCA_GEN_STATUS 0x34 +#define TCA_GEN_DEV_POR BIT(12) +#define TCA_GEN_REF_CLK_SEL BIT(8) +#define TCA_GEN_TYPEC_FLIP_INVERT BIT(4) +#define TCA_GEN_PHY_TYPEC_DISABLE BIT(3) +#define TCA_GEN_PHY_TYPEC_FLIP BIT(2) + +#define TCA_VBUS_CTRL 0x40 +#define TCA_VBUS_STATUS 0x44 + +#define TCA_INFO 0xFC + +struct tca_blk { + struct typec_switch_dev *sw; + void __iomem *base; + struct mutex mutex; + enum typec_orientation orientation; +}; + struct imx8mq_usb_phy { struct phy *phy; struct clk *clk; void __iomem *base; struct regulator *vbus; + struct tca_blk *tca; u32 pcs_tx_swing_full; u32 pcs_tx_deemph_3p5db; u32 tx_vref_tune; @@ -64,6 +120,175 @@ struct imx8mq_usb_phy { u32 comp_dis_tune; }; + +static void tca_blk_orientation_set(struct tca_blk *tca, + enum typec_orientation orientation); + +#ifdef CONFIG_TYPEC + +static int tca_blk_typec_switch_set(struct typec_switch_dev *sw, + enum typec_orientation orientation) +{ + struct imx8mq_usb_phy *imx_phy = typec_switch_get_drvdata(sw); + struct tca_blk *tca = imx_phy->tca; + int ret; + + if (tca->orientation == orientation) + return 0; + + ret = clk_prepare_enable(imx_phy->clk); + if (ret) + return ret; + + tca_blk_orientation_set(tca, orientation); + clk_disable_unprepare(imx_phy->clk); + + return 0; +} + +static struct typec_switch_dev *tca_blk_get_typec_switch(struct platform_device *pdev, + struct imx8mq_usb_phy *imx_phy) +{ + struct device *dev = &pdev->dev; + struct typec_switch_dev *sw; + struct typec_switch_desc sw_desc = { }; + + sw_desc.drvdata = imx_phy; + sw_desc.fwnode = dev->fwnode; + sw_desc.set = tca_blk_typec_switch_set; + sw_desc.name = NULL; + + sw = typec_switch_register(dev, &sw_desc); + if (IS_ERR(sw)) { + dev_err(dev, "Error register tca orientation switch: %ld", + PTR_ERR(sw)); + return NULL; + } + + return sw; +} + +static void tca_blk_put_typec_switch(struct typec_switch_dev *sw) +{ + typec_switch_unregister(sw); +} + +#else + +static struct typec_switch_dev *tca_blk_get_typec_switch(struct platform_device *pdev, + struct imx8mq_usb_phy *imx_phy) +{ + return NULL; +} + +static void tca_blk_put_typec_switch(struct typec_switch_dev *sw) {} + +#endif /* CONFIG_TYPEC */ + +static void tca_blk_orientation_set(struct tca_blk *tca, + enum typec_orientation orientation) +{ + u32 val; + + mutex_lock(&tca->mutex); + + if (orientation == TYPEC_ORIENTATION_NONE) { + /* + * use Controller Synced Mode for TCA low power enable and + * put PHY to USB safe state. + */ + val = readl(tca->base + TCA_GCFG); + val = FIELD_PREP(TCA_GCFG_OP_MODE, TCA_GCFG_OP_MODE_SYNCMODE); + writel(val, tca->base + TCA_GCFG); + + val = readl(tca->base + TCA_TCPC); + val = TCA_TCPC_VALID | TCA_TCPC_LOW_POWER_EN; + writel(val, tca->base + TCA_TCPC); + + goto out; + } + + /* use System Configuration Mode for TCA mux control. */ + val = readl(tca->base + TCA_GCFG); + val = FIELD_PREP(TCA_GCFG_OP_MODE, TCA_GCFG_OP_MODE_SYSMODE); + writel(val, tca->base + TCA_GCFG); + + /* Disable TCA module */ + val = readl(tca->base + TCA_SYSMODE_CFG); + val |= TCA_SYSMODE_TCPC_DISABLE; + writel(val, tca->base + TCA_SYSMODE_CFG); + + if (orientation == TYPEC_ORIENTATION_REVERSE) + val |= TCA_SYSMODE_TCPC_FLIP; + else if (orientation == TYPEC_ORIENTATION_NORMAL) + val &= ~TCA_SYSMODE_TCPC_FLIP; + + writel(val, tca->base + TCA_SYSMODE_CFG); + + /* Enable TCA module */ + val &= ~TCA_SYSMODE_TCPC_DISABLE; + writel(val, tca->base + TCA_SYSMODE_CFG); + +out: + tca->orientation = orientation; + mutex_unlock(&tca->mutex); +} + +static void tca_blk_init(struct tca_blk *tca) +{ + u32 val; + + /* reset XBar block */ + val = readl(tca->base + TCA_CLK_RST); + val &= ~TCA_CLK_RST_SW; + writel(val, tca->base + TCA_CLK_RST); + + udelay(100); + + /* clear reset */ + val |= TCA_CLK_RST_SW; + writel(val, tca->base + TCA_CLK_RST); + + tca_blk_orientation_set(tca, tca->orientation); +} + +static struct tca_blk *imx95_usb_phy_get_tca(struct platform_device *pdev, + struct imx8mq_usb_phy *imx_phy) +{ + struct device *dev = &pdev->dev; + struct resource *res; + struct tca_blk *tca; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 1); + if (!res) + return NULL; + + tca = devm_kzalloc(dev, sizeof(*tca), GFP_KERNEL); + if (!tca) + return ERR_PTR(-ENOMEM); + + tca->base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(tca->base)) + return ERR_CAST(tca->base); + + mutex_init(&tca->mutex); + + tca->orientation = TYPEC_ORIENTATION_NORMAL; + tca->sw = tca_blk_get_typec_switch(pdev, imx_phy); + + return tca; +} + +static void imx95_usb_phy_put_tca(struct imx8mq_usb_phy *imx_phy) +{ + struct tca_blk *tca = imx_phy->tca; + + if (!tca) + return; + + tca_blk_put_typec_switch(tca->sw); +} + static u32 phy_tx_vref_tune_from_property(u32 percent) { percent = clamp(percent, 94U, 124U); @@ -315,6 +540,9 @@ static int imx8mp_usb_phy_init(struct phy *phy) imx8m_phy_tune(imx_phy); + if (imx_phy->tca) + tca_blk_init(imx_phy->tca); + return 0; } @@ -359,6 +587,8 @@ static const struct of_device_id imx8mq_usb_phy_of_match[] = { .data = &imx8mq_usb_phy_ops,}, {.compatible = "fsl,imx8mp-usb-phy", .data = &imx8mp_usb_phy_ops,}, + {.compatible = "fsl,imx95-usb-phy", + .data = &imx8mp_usb_phy_ops,}, { } }; MODULE_DEVICE_TABLE(of, imx8mq_usb_phy_of_match); @@ -398,6 +628,11 @@ static int imx8mq_usb_phy_probe(struct platform_device *pdev) phy_set_drvdata(imx_phy->phy, imx_phy); + imx_phy->tca = imx95_usb_phy_get_tca(pdev, imx_phy); + if (IS_ERR(imx_phy->tca)) + return dev_err_probe(dev, PTR_ERR(imx_phy->tca), + "failed to get tca\n"); + imx8m_get_phy_tuning_data(imx_phy); phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); @@ -405,8 +640,16 @@ static int imx8mq_usb_phy_probe(struct platform_device *pdev) return PTR_ERR_OR_ZERO(phy_provider); } +static void imx8mq_usb_phy_remove(struct platform_device *pdev) +{ + struct imx8mq_usb_phy *imx_phy = platform_get_drvdata(pdev); + + imx95_usb_phy_put_tca(imx_phy); +} + static struct platform_driver imx8mq_usb_phy_driver = { .probe = imx8mq_usb_phy_probe, + .remove = imx8mq_usb_phy_remove, .driver = { .name = "imx8mq-usb-phy", .of_match_table = imx8mq_usb_phy_of_match,