T2080 v1.0 has this errata while v1.1 has fixed this errata by hardware, add a new function has_errata_a007186 to check the SVR_SOC_VER, SVR_MAJ and SVR_MIN first, if the sil has errata a007186, then run the errata code, if not, doesn't run the code.

Signed-off-by: Zhao Qiang B45475@freescale.com Change-Id: I19d794283229a86d04d8f22d44b860a5c3940cdc Reviewed-on: http://git.am.freescale.net:8181/19850 Tested-by: Review Code-CDREVIEW CDREVIEW@freescale.com Reviewed-by: Yusong Sun yorksun@freescale.com --- Changes for v2: - use has_errata_a007186 instead of not_has_errata_a007186 Changes for v3: - use "if (has_erratum_a007186() && sel == 0x01 || sel == 0x02) {" - instead of "if (has_erratum_a007186()) { Changes for v4: - update soc info in has_erratum_a007186 function

arch/powerpc/cpu/mpc85xx/cmd_errata.c | 3 ++- arch/powerpc/cpu/mpc85xx/fsl_corenet2_serdes.c | 3 ++- arch/powerpc/include/asm/fsl_errata.h | 24 ++++++++++++++++++++++++ 3 files changed, 28 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/cpu/mpc85xx/cmd_errata.c b/arch/powerpc/cpu/mpc85xx/cmd_errata.c index 3a04a89..0774461 100644 --- a/arch/powerpc/cpu/mpc85xx/cmd_errata.c +++ b/arch/powerpc/cpu/mpc85xx/cmd_errata.c @@ -270,7 +270,8 @@ static int do_errata(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) puts("Work-around for Erratum USB14 enabled\n"); #endif #ifdef CONFIG_SYS_FSL_ERRATUM_A007186 - puts("Work-around for Erratum A007186 enabled\n"); + if (has_erratum_a007186()) + puts("Work-around for Erratum A007186 enabled\n"); #endif #ifdef CONFIG_SYS_FSL_ERRATUM_A006593 puts("Work-around for Erratum A006593 enabled\n"); diff --git a/arch/powerpc/cpu/mpc85xx/fsl_corenet2_serdes.c b/arch/powerpc/cpu/mpc85xx/fsl_corenet2_serdes.c index 8edf5bb..5cfae47 100644 --- a/arch/powerpc/cpu/mpc85xx/fsl_corenet2_serdes.c +++ b/arch/powerpc/cpu/mpc85xx/fsl_corenet2_serdes.c @@ -11,6 +11,7 @@ #include <asm/processor.h> #include <asm/fsl_law.h> #include <asm/errno.h> +#include <asm/fsl_errata.h> #include "fsl_corenet2_serdes.h"

#ifdef CONFIG_SYS_FSL_SRDS_1 @@ -203,7 +204,7 @@ u64 serdes_init(u32 sd, u32 sd_addr, u32 sd_prctl_mask, u32 sd_prctl_shift)

sel = (sfp_spfr0 >> FUSE_VAL_SHIFT) & FUSE_VAL_MASK;

- if (sel == 0x01 || sel == 0x02) { + if (has_erratum_a007186() && (sel == 0x01 || sel == 0x02)) { for (pll_num = 0; pll_num < SRDS_MAX_BANK; pll_num++) { pll_status = in_be32(&srds_regs->bank[pll_num].pllcr0); debug("A007186: pll_num=%x pllcr0=%x\n", diff --git a/arch/powerpc/include/asm/fsl_errata.h b/arch/powerpc/include/asm/fsl_errata.h index 64da4bb..bce2250 100644 --- a/arch/powerpc/include/asm/fsl_errata.h +++ b/arch/powerpc/include/asm/fsl_errata.h @@ -82,3 +82,27 @@ static inline bool has_erratum_a007075(void) return false; } #endif + +#ifdef CONFIG_SYS_FSL_ERRATUM_A007186 +static inline bool has_erratum_a007186(void) +{ + u32 svr = get_svr(); + u32 soc = SVR_SOC_VER(svr); + + switch (soc) { + case SVR_T4240: + return IS_SVR_REV(svr, 2, 0); + case SVR_T4160: + return IS_SVR_REV(svr, 2, 0); + case SVR_B4860: + return IS_SVR_REV(svr, 2, 0); + case SVR_B4420: + return IS_SVR_REV(svr, 2, 0); + case SVR_T2081: + case SVR_T2080: + return IS_SVR_REV(svr, 1, 0); + } + + return false; +} +#endif