[PATCH 1/2] usb: imx: add support for setting power pin polarity on i.MX6/7

[Lucas Stach]

Signed-off-by: Lucas Stach <l.stach at pengutronix.de>
---
 drivers/usb/imx/imx-usb-misc.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/usb/imx/imx-usb-misc.c b/drivers/usb/imx/imx-usb-misc.c
index 3a5ec236e532..b663d073aa88 100644
--- a/drivers/usb/imx/imx-usb-misc.c
+++ b/drivers/usb/imx/imx-usb-misc.c
@@ -354,6 +354,7 @@ static __maybe_unused struct imx_usb_misc_data mx5_data = {
 #define MX6_USB_CTRL(n)			((n) * 4)
 #define MX6_USB_CTRL_OVER_CUR_DIS	(1 << 7)
 #define MX6_USB_CTRL_OVER_CUR_ACT_HIGH	(1 << 8)
+#define MX6_USB_CTRL_PWR_POLARITY	(1 << 9)
 
 static void mx6_hsic_pullup(unsigned long reg, int on)
 {
@@ -380,6 +381,8 @@ static __maybe_unused int mx6_initialize_usb_hw(void __iomem *base, int port,
 		val = readl(base + MX6_USB_CTRL(port));
 		if (flags & MXC_EHCI_DISABLE_OVERCURRENT)
 			val |= MX6_USB_CTRL_OVER_CUR_DIS;
+		if (flags & MXC_EHCI_PWR_PIN_ACTIVE_HIGH)
+			val |= MX6_USB_CTRL_PWR_POLARITY;
 		writel(val, base + MX6_USB_CTRL(port));
 		break;
 	case 2: /* HSIC port */
@@ -454,6 +457,8 @@ static int usbmisc_imx7d_init(void __iomem *base, int port,
 		else
 			reg |= MX6_USB_CTRL_OVER_CUR_ACT_HIGH;
 	}
+	if (flags & MXC_EHCI_PWR_PIN_ACTIVE_HIGH)
+		reg |= MX6_USB_CTRL_PWR_POLARITY;
 	writel(reg, base);
 
 	reg = readl(base + MX7D_USBNC_USB_CTRL2);
-- 
2.20.1