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authorShengzhou Liu <Shengzhou.Liu@freescale.com>2012-02-16 18:02:20 +0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-02-24 13:37:45 -0800
commit28c56ea1431421dec51b7b229369e991481453df (patch)
tree1344d743b6afe3b375f6305a1c7ab339d4d57cf4 /drivers/usb/host/ehci-fsl.h
parente90fc3cb087ce5c5f81e814358222cd6d197b5db (diff)
downloadop-kernel-dev-28c56ea1431421dec51b7b229369e991481453df.zip
op-kernel-dev-28c56ea1431421dec51b7b229369e991481453df.tar.gz
powerpc/usb: fix bug of kernel hang when initializing usb
If USB UTMI PHY is not enable, writing to portsc register will lead to kernel hang during boot up. Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com> Reported-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/ehci-fsl.h')
-rw-r--r--drivers/usb/host/ehci-fsl.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci-fsl.h b/drivers/usb/host/ehci-fsl.h
index 6d5a94e..863fb0c 100644
--- a/drivers/usb/host/ehci-fsl.h
+++ b/drivers/usb/host/ehci-fsl.h
@@ -47,6 +47,7 @@
#define FSL_SOC_USB_PRICTRL 0x40c /* NOTE: big-endian */
#define FSL_SOC_USB_SICTRL 0x410 /* NOTE: big-endian */
#define FSL_SOC_USB_CTRL 0x500 /* NOTE: big-endian */
+#define CTRL_UTMI_PHY_EN (1<<9)
#define CTRL_PHY_CLK_VALID (1 << 17)
#define SNOOP_SIZE_2GB 0x1e
#endif /* _EHCI_FSL_H */
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