diff options
| -rw-r--r-- | drivers/usb/otg/nop-usb-xceiv.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/usb/otg/nop-usb-xceiv.c b/drivers/usb/otg/nop-usb-xceiv.c index fbdcfef7169b..6efc9b793333 100644 --- a/drivers/usb/otg/nop-usb-xceiv.c +++ b/drivers/usb/otg/nop-usb-xceiv.c @@ -40,6 +40,7 @@ struct nop_usb_xceiv { struct device *dev; struct clk *clk; struct regulator *vcc; + struct regulator *reset; }; static struct platform_device *pd; @@ -80,6 +81,12 @@ static int nop_init(struct usb_phy *phy) if (!IS_ERR(nop->clk)) clk_enable(nop->clk); + if (!IS_ERR(nop->reset)) { + /* De-assert RESET */ + if (regulator_enable(nop->reset)) + dev_err(phy->dev, "Failed to de-assert reset\n"); + } + return 0; } @@ -87,6 +94,12 @@ static void nop_shutdown(struct usb_phy *phy) { struct nop_usb_xceiv *nop = dev_get_drvdata(phy->dev); + if (!IS_ERR(nop->reset)) { + /* Assert RESET */ + if (regulator_disable(nop->reset)) + dev_err(phy->dev, "Failed to assert reset\n"); + } + if (!IS_ERR(nop->clk)) clk_disable(nop->clk); @@ -172,6 +185,12 @@ static int nop_usb_xceiv_probe(struct platform_device *pdev) PTR_ERR(nop->vcc)); } + nop->reset = devm_regulator_get(&pdev->dev, "reset"); + if (IS_ERR(nop->reset)) { + dev_dbg(&pdev->dev, "Error getting reset regulator: %ld\n", + PTR_ERR(nop->reset)); + } + nop->dev = &pdev->dev; nop->phy.dev = nop->dev; nop->phy.label = "nop-xceiv"; |