| Message ID | 20241010090822.3915064-1-xu.yang_2@nxp.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v7,1/3] phy: fsl-imx8mq-usb: add tca function driver for imx95 | expand |
On 10-10-24, 17:08, Xu Yang wrote: > 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 <xu.yang_2@nxp.com> > Reviewed-by: Jun Li <jun.li@nxp.com> > > --- > 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 <linux/phy/phy.h> > #include <linux/platform_device.h> > #include <linux/regulator/consumer.h> > +#include <linux/usb/typec_mux.h> > > #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 lowercase please > + > +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); > +} Why to put a wrapper over an API, call this instead? > + > +#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, > -- > 2.34.1
On Sat, Oct 12, 2024 at 11:05:36PM +0530, Vinod Koul wrote: > On 10-10-24, 17:08, Xu Yang wrote: > > 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 <xu.yang_2@nxp.com> > > Reviewed-by: Jun Li <jun.li@nxp.com> > > > > --- > > 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 <linux/phy/phy.h> > > #include <linux/platform_device.h> > > #include <linux/regulator/consumer.h> > > +#include <linux/usb/typec_mux.h> > > > > #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 > > lowercase please Okay. > > > + > > +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); > > +} > > Why to put a wrapper over an API, call this instead? 1. We add a warpper tca_blk_get_typec_switch() to get typec switch device, when it's not needed, we can call tca_blk_put_typec_switch(). So the function name tca_blk_get/put_*() could be paired and clear enough. 2. We don't always call typec_switch_unregister(). It depends. This phy driver can be used without typec switch in Type-C module, so we need call typec_switch_unregister() when use typec switch and needn't call it when not use typec switch (see below). > > > + > > +#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) {} tca_blk_put_typec_switch() do nothing when not use typec switch. > > + > > +#endif /* CONFIG_TYPEC */ Thanks, Xu Yang
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 <linux/phy/phy.h> #include <linux/platform_device.h> #include <linux/regulator/consumer.h> +#include <linux/usb/typec_mux.h> #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,