Set TXFIFOTHRESH to adjust ddr pipeline delay for successful large usb writes

Signed-off-by: Nikhil Badola nikhil.badola@freescale.com --- Depends on patch https://patchwork.ozlabs.org/patch/394797/

arch/powerpc/cpu/mpc85xx/cmd_errata.c | 4 ++++ arch/powerpc/include/asm/config_mpc85xx.h | 1 + drivers/usb/host/ehci-fsl.c | 3 +-- include/fsl_usb.h | 11 +++++++++++ 4 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/cpu/mpc85xx/cmd_errata.c b/arch/powerpc/cpu/mpc85xx/cmd_errata.c index 349ce52..fe3eb06 100644 --- a/arch/powerpc/cpu/mpc85xx/cmd_errata.c +++ b/arch/powerpc/cpu/mpc85xx/cmd_errata.c @@ -294,6 +294,10 @@ static int do_errata(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) if (has_erratum_a007075()) puts("Work-around for Erratum A007075 enabled\n"); #endif +#ifdef CONFIG_SYS_FSL_ERRATUM_A007798 + if (has_erratum_a007798()) + puts("Work-around for Erratum A007798 enabled\n"); +#endif #ifdef CONFIG_SYS_FSL_ERRATUM_I2C_A004447 if ((SVR_SOC_VER(svr) == SVR_8548 && IS_SVR_REV(svr, 3, 1)) || (SVR_REV(svr) <= CONFIG_SYS_FSL_A004447_SVR_REV)) diff --git a/arch/powerpc/include/asm/config_mpc85xx.h b/arch/powerpc/include/asm/config_mpc85xx.h index 712f2ef..486bc53 100644 --- a/arch/powerpc/include/asm/config_mpc85xx.h +++ b/arch/powerpc/include/asm/config_mpc85xx.h @@ -677,6 +677,7 @@ #define CONFIG_SYS_FSL_ERRATUM_A006379 #define CONFIG_SYS_FSL_ERRATUM_A007186 #define CONFIG_SYS_FSL_ERRATUM_A006593 +#define CONFIG_SYS_FSL_ERRATUM_A007798 #define CONFIG_SYS_CCSRBAR_DEFAULT 0xfe000000 #define CONFIG_SYS_FSL_SFP_VER_3_0 #define CONFIG_SYS_FSL_PCI_VER_3_X diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c index c125e2c..7101202 100644 --- a/drivers/usb/host/ehci-fsl.c +++ b/drivers/usb/host/ehci-fsl.c @@ -131,8 +131,7 @@ int ehci_hcd_init(int index, enum usb_init_type init,

in_le32(&ehci->usbmode);

- if (SVR_SOC_VER(get_svr()) == SVR_T4240 && - IS_SVR_REV(get_svr(), 2, 0)) + if (has_erratum_a007798()) set_txfifothresh(ehci, TXFIFOTHRESH);

return 0; diff --git a/include/fsl_usb.h b/include/fsl_usb.h index 66f8934..e4902aa 100644 --- a/include/fsl_usb.h +++ b/include/fsl_usb.h @@ -139,6 +139,12 @@ static inline bool has_erratum_a007075(void) } return false; } + +static inline bool has_erratum_a007798(void) +{ + return SVR_SOC_VER(get_svr()) == SVR_T4240 && + IS_SVR_REV(get_svr(), 2, 0); +} #else static inline bool has_erratum_a006261(void) { @@ -150,5 +156,10 @@ static inline bool has_erratum_a007075(void) return false; }

+static inline bool has_erratum_a007798(void) +{ + return false; +} + #endif #endif /*_ASM_FSL_USB_H_ */