drivers:usb: Check if USB Erratum A005697 is applicable on BSC913x

Check if USB Erratum A005697 is applicable on BSC913x and
add corresponding  property in the device tree via device
tree fixup which is used by linux driver

Signed-off-by: Nikhil Badola <nikhil.badola@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>

diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c
index ed83eb4718970411a024182d2e55d58b52e97379..2dca5244be9c15b87116b9e880c06e69d7c41927 100644 (file)
--- a/drivers/usb/host/ehci-fsl.c
+++ b/drivers/usb/host/ehci-fsl.c
@@ -263,6 +263,7 @@ void fdt_fixup_dr_usb(void *blob, bd_t *bd)
        int usb_erratum_a006261_off = -1;
        int usb_erratum_a007075_off = -1;
        int usb_erratum_a007792_off = -1;
+       int usb_erratum_a005697_off = -1;
        int usb_mode_off = -1;
        int usb_phy_off = -1;
        char str[5];
@@ -346,6 +347,14 @@ void fdt_fixup_dr_usb(void *blob, bd_t *bd)
                        if (usb_erratum_a007792_off < 0)
                                return;
                }
+               if (has_erratum_a005697()) {
+                       usb_erratum_a005697_off =  fdt_fixup_usb_erratum
+                                                  (blob,
+                                                   "fsl,usb-erratum-a005697",
+                                                   usb_erratum_a005697_off);
+                       if (usb_erratum_a005697_off < 0)
+                               return;
+               }
        }
 }
 #endif

diff --git a/include/fsl_usb.h b/include/fsl_usb.h
index 92751dd827a23ed1f021ede74318aaac5dcda317..33d9f030960c27117e754ec49b51390e8ad2936a 100644 (file)
--- a/include/fsl_usb.h
+++ b/include/fsl_usb.h
@@ -196,6 +196,19 @@ static inline bool has_erratum_a007792(void)
        return false;
 }
 
+static inline bool has_erratum_a005697(void)
+{
+       u32 svr = get_svr();
+       u32 soc = SVR_SOC_VER(svr);
+
+       switch (soc) {
+       case SVR_9131:
+       case SVR_9132:
+               return IS_SVR_REV(svr, 1, 0) || IS_SVR_REV(svr, 1, 1);
+       }
+       return false;
+}
+
 #else
 static inline bool has_dual_phy(void)
 {
@@ -221,5 +234,10 @@ static inline bool has_erratum_a007792(void)
 {
        return false;
 }
+
+static inline bool has_erratum_a005697(void)
+{
+       return false;
+}
 #endif
 #endif /*_ASM_FSL_USB_H_ */