usb: chipidea: Fix ULPI on imx51

Workaround introduced for i.MX53 in be9cae2 ("usb: chipidea:
imx: Fix ULPI on imx53") seems to be applicable in case of i.MX51 as
well. Running latest kernel on ZII RDU1 Board (imx51-zii-rdu1.dts)
exhibits a kernel frozen on PORTSC access and applying the workaround
resolves the issue.

Fixes: be9cae2 ("usb: chipidea: imx: Fix ULPI on imx53")
Cc: Peter Chen <[email protected]>
Cc: Lucas Stach <[email protected]>
Cc: Chris Healy <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Reviewed-by: Fabio Estevam <[email protected]>
Signed-off-by: Andrey Smirnov <[email protected]>
Tested-By: Nikita Yushchenko <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: ndreys

drivers/usb/chipidea/ci_hdrc_imx.c

@@ -291,7 +291,8 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev)
 
 	pdata.usb_phy = data->phy;
 
-	if (of_device_is_compatible(np, "fsl,imx53-usb") && pdata.usb_phy &&
+	if ((of_device_is_compatible(np, "fsl,imx53-usb") ||
+	     of_device_is_compatible(np, "fsl,imx51-usb")) && pdata.usb_phy &&
 	    of_usb_get_phy_mode(np) == USBPHY_INTERFACE_MODE_ULPI) {
 		pdata.flags |= CI_HDRC_OVERRIDE_PHY_CONTROL;
 		data->override_phy_control = true;