powerpc/usb: fix bug of CPU hang when missing USB PHY clock
when missing USB PHY clock, kernel booting up will hang during USB
initialization. We should check USBGP[PHY_CLK_VALID] bit to avoid
CPU hanging in this case.
Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/include/linux/fsl_devices.h b/include/linux/fsl_devices.h
index 15be561..ccfc4bb 100644
--- a/include/linux/fsl_devices.h
+++ b/include/linux/fsl_devices.h
@@ -19,6 +19,7 @@
#define FSL_UTMI_PHY_DLY 10 /*As per P1010RM, delay for UTMI
PHY CLK to become stable - 10ms*/
+#define FSL_USB_PHY_CLK_TIMEOUT 1000 /* uSec */
#define FSL_USB_VER_OLD 0
#define FSL_USB_VER_1_6 1
#define FSL_USB_VER_2_2 2