Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit eeda879b authored by Lucas Stach's avatar Lucas Stach Committed by Kishon Vijay Abraham I
Browse files

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: default avatarLucas Stach <l.stach@pengutronix.de>
Signed-off-by: default avatarKishon Vijay Abraham I <kishon@ti.com>
parent 29c6584f

drivers/phy/freescale/phy-fsl-imx8mq-usb.c

+12 −0
Original line number Diff line number Diff line
@@ -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);