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 --- Depends on "drivers:usb:fsl: Add affected SOCs for USB Erratum A007792" http://patchwork.ozlabs.org/patch/448965/
drivers/usb/host/ehci-fsl.c | 9 +++++++++ include/fsl_usb.h | 18 ++++++++++++++++++ 2 files changed, 27 insertions(+)
diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c index ed83eb4..2dca524 100644 --- 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 92751dd..33d9f03 100644 --- 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_ */