diff options
Diffstat (limited to 'drivers/phy/freescale/phy-fsl-imx8mq-usb.c')
| -rw-r--r-- | drivers/phy/freescale/phy-fsl-imx8mq-usb.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/drivers/phy/freescale/phy-fsl-imx8mq-usb.c b/drivers/phy/freescale/phy-fsl-imx8mq-usb.c index b94f242420fc..ad8a55012e42 100644 --- a/drivers/phy/freescale/phy-fsl-imx8mq-usb.c +++ b/drivers/phy/freescale/phy-fsl-imx8mq-usb.c @@ -16,6 +16,7 @@ #define PHY_CTRL0_REF_SSP_EN BIT(2) #define PHY_CTRL0_FSEL_MASK GENMASK(10, 5) #define PHY_CTRL0_FSEL_24M 0x2a +#define PHY_CTRL0_FSEL_100M 0x27 #define PHY_CTRL1 0x4 #define PHY_CTRL1_RESET BIT(0) @@ -108,6 +109,7 @@ struct tca_blk { struct imx8mq_usb_phy { struct phy *phy; struct clk *clk; + struct clk *alt_clk; void __iomem *base; struct regulator *vbus; struct tca_blk *tca; @@ -582,7 +584,8 @@ static int imx8mp_usb_phy_init(struct phy *phy) /* USB3.0 PHY signal fsel for 24M ref */ value = readl(imx_phy->base + PHY_CTRL0); value &= ~PHY_CTRL0_FSEL_MASK; - value |= FIELD_PREP(PHY_CTRL0_FSEL_MASK, PHY_CTRL0_FSEL_24M); + value |= FIELD_PREP(PHY_CTRL0_FSEL_MASK, imx_phy->alt_clk ? + PHY_CTRL0_FSEL_100M : PHY_CTRL0_FSEL_24M); writel(value, imx_phy->base + PHY_CTRL0); /* Disable alt_clk_en and use internal MPLL clocks */ @@ -626,13 +629,24 @@ static int imx8mq_phy_power_on(struct phy *phy) if (ret) return ret; - return clk_prepare_enable(imx_phy->clk); + ret = clk_prepare_enable(imx_phy->clk); + if (ret) + return ret; + + ret = clk_prepare_enable(imx_phy->alt_clk); + if (ret) { + clk_disable_unprepare(imx_phy->clk); + return ret; + } + + return ret; } static int imx8mq_phy_power_off(struct phy *phy) { struct imx8mq_usb_phy *imx_phy = phy_get_drvdata(phy); + clk_disable_unprepare(imx_phy->alt_clk); clk_disable_unprepare(imx_phy->clk); regulator_disable(imx_phy->vbus); @@ -681,6 +695,11 @@ static int imx8mq_usb_phy_probe(struct platform_device *pdev) return PTR_ERR(imx_phy->clk); } + imx_phy->alt_clk = devm_clk_get_optional(dev, "alt"); + if (IS_ERR(imx_phy->alt_clk)) + return dev_err_probe(dev, PTR_ERR(imx_phy->alt_clk), + "Failed to get alt clk\n"); + imx_phy->base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(imx_phy->base)) return PTR_ERR(imx_phy->base); |