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authorLucas Stach <l.stach@pengutronix.de>2019-04-04 18:41:48 +0200
committerKishon Vijay Abraham I <kishon@ti.com>2019-04-18 22:08:25 +0530
commiteeda879bb54f46c01d7014602aecaae3a2bbeb5d (patch)
tree99364633215e343d8cc816b2c1bb1b67ca38db66 /drivers/phy
parent29c6584f333149157c7ec72aa5dca18aa9253e10 (diff)
downloadlinux-eeda879bb54f46c01d7014602aecaae3a2bbeb5d.tar.bz2
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')
-rw-r--r--drivers/phy/freescale/phy-fsl-imx8mq-usb.c12
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);