usb: gadget: udc: renesas-usb3: clear VBOUT bit in DRD_CON
This driver should clear the bit. Otherwise, the VBUS will output
wrongly if the usb port on a board has VBUS output capability.
Fixes: 746bfe63bba3 ("usb: gadget: renesas_usb3: add support for
Renesas USB3.0 peripheral controller")
Cc: <stable@vger.kernel.org> # v4.5+
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
diff --git a/drivers/usb/gadget/udc/renesas_usb3.c b/drivers/usb/gadget/udc/renesas_usb3.c
index 93a3bec..fb8fc34 100644
--- a/drivers/usb/gadget/udc/renesas_usb3.c
+++ b/drivers/usb/gadget/udc/renesas_usb3.c
@@ -106,6 +106,7 @@
/* DRD_CON */
#define DRD_CON_PERI_CON BIT(24)
+#define DRD_CON_VBOUT BIT(0)
/* USB_INT_ENA_1 and USB_INT_STA_1 */
#define USB_INT_1_B3_PLLWKUP BIT(31)
@@ -363,6 +364,7 @@
{
/* FIXME: How to change host / peripheral mode as well? */
usb3_set_bit(usb3, DRD_CON_PERI_CON, USB3_DRD_CON);
+ usb3_clear_bit(usb3, DRD_CON_VBOUT, USB3_DRD_CON);
usb3_write(usb3, ~0, USB3_USB_INT_STA_1);
usb3_enable_irq_1(usb3, USB_INT_1_VBUS_CNG);