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| author | Lucas Stach <l.stach@pengutronix.de> | 2019-04-04 18:41:48 +0200 |
|---|---|---|
| committer | Kishon Vijay Abraham I <kishon@ti.com> | 2019-04-18 22:08:25 +0530 |
| commit | eeda879bb54f46c01d7014602aecaae3a2bbeb5d (patch) | |
| tree | 99364633215e343d8cc816b2c1bb1b67ca38db66 /drivers/phy/freescale/phy-fsl-imx8mq-usb.c | |
| parent | 29c6584f333149157c7ec72aa5dca18aa9253e10 (diff) | |
| download | lwn-eeda879bb54f46c01d7014602aecaae3a2bbeb5d.tar.gz lwn-eeda879bb54f46c01d7014602aecaae3a2bbeb5d.zip | |
phy: fsl-imx8mq-usb: add support for VBUS power control
This adds support to the PHY driver to power up/down the VBUS
voltage rail at the appropriate times.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Diffstat (limited to 'drivers/phy/freescale/phy-fsl-imx8mq-usb.c')
| -rw-r--r-- | drivers/phy/freescale/phy-fsl-imx8mq-usb.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/phy/freescale/phy-fsl-imx8mq-usb.c b/drivers/phy/freescale/phy-fsl-imx8mq-usb.c index d6ea5ce8afa5..0c4833da7be0 100644 --- a/drivers/phy/freescale/phy-fsl-imx8mq-usb.c +++ b/drivers/phy/freescale/phy-fsl-imx8mq-usb.c @@ -6,6 +6,7 @@ #include <linux/module.h> #include <linux/phy/phy.h> #include <linux/platform_device.h> +#include <linux/regulator/consumer.h> #define PHY_CTRL0 0x0 #define PHY_CTRL0_REF_SSP_EN BIT(2) @@ -24,6 +25,7 @@ struct imx8mq_usb_phy { struct phy *phy; struct clk *clk; void __iomem *base; + struct regulator *vbus; }; static int imx8mq_usb_phy_init(struct phy *phy) @@ -55,6 +57,11 @@ static int imx8mq_usb_phy_init(struct phy *phy) static int imx8mq_phy_power_on(struct phy *phy) { struct imx8mq_usb_phy *imx_phy = phy_get_drvdata(phy); + int ret; + + ret = regulator_enable(imx_phy->vbus); + if (ret) + return ret; return clk_prepare_enable(imx_phy->clk); } @@ -64,6 +71,7 @@ static int imx8mq_phy_power_off(struct phy *phy) struct imx8mq_usb_phy *imx_phy = phy_get_drvdata(phy); clk_disable_unprepare(imx_phy->clk); + regulator_disable(imx_phy->vbus); return 0; } @@ -101,6 +109,10 @@ static int imx8mq_usb_phy_probe(struct platform_device *pdev) if (IS_ERR(imx_phy->phy)) return PTR_ERR(imx_phy->phy); + imx_phy->vbus = devm_regulator_get(dev, "vbus"); + if (IS_ERR(imx_phy->vbus)) + return PTR_ERR(imx_phy->vbus); + phy_set_drvdata(imx_phy->phy, imx_phy); phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); |