usb: ehci-mx6: Do not fail when 'reg' is not found

Unlike imx6, on imx7 the USB PHY is described as:

	usbphynop1: usbphynop1 {
		compatible = "usb-nop-xceiv";
		clocks = <&clks IMX7D_USB_PHY1_CLK>;
		clock-names = "main_clk";
		#phy-cells = <0>;
	};

which does not have the 'reg' property.

Do not return an error when the 'reg' property is not found
for the USB PHY.

This fixes USB gadget regression on a imx7s-warp board.

Successfully tested the "ums 0 mmc 0" command on two boards:
imx7s-warp and imx6dl-pico-pi.

Signed-off-by: Fabio Estevam <festevam@denx.de>

diff --git a/drivers/usb/host/ehci-mx6.c b/drivers/usb/host/ehci-mx6.c
index 48b5c8b0c53c21c4dfc0d0ffd258fc8d829b32d5..c3e4170513ec06fed7acbcff1417198c0d123146 100644 (file)
--- a/drivers/usb/host/ehci-mx6.c
+++ b/drivers/usb/host/ehci-mx6.c
@@ -583,7 +583,7 @@ static int mx6_parse_dt_addrs(struct udevice *dev)
 
        addr = (void __iomem *)fdtdec_get_addr(blob, phy_off, "reg");
        if ((fdt_addr_t)addr == FDT_ADDR_T_NONE)
-               return -EINVAL;
+               addr = NULL;
 
        priv->phy_addr = addr;