From ae026ffd1e1a3f98b13c121acf5a677a5925a0e1 Mon Sep 17 00:00:00 2001 From: Roy Zang Date: Fri, 7 Jan 2011 00:24:27 -0600 Subject: [PATCH] fsl_esdhc: Add the workaround for erratum ESDHC136 (enable on P4080) False multi-bit ECC errors will be reported by the eSDHC buffer which can trigger a reset request. We disable all ECC error checking on SDHC. Signed-off-by: Roy Zang Signed-off-by: Kumar Gala --- arch/powerpc/cpu/mpc85xx/cmd_errata.c | 3 +++ arch/powerpc/cpu/mpc85xx/cpu_init.c | 8 ++++++++ include/configs/P4080DS.h | 1 + 3 files changed, 12 insertions(+) diff --git a/arch/powerpc/cpu/mpc85xx/cmd_errata.c b/arch/powerpc/cpu/mpc85xx/cmd_errata.c index d5c34c867f..4e2cb4a640 100644 --- a/arch/powerpc/cpu/mpc85xx/cmd_errata.c +++ b/arch/powerpc/cpu/mpc85xx/cmd_errata.c @@ -55,6 +55,9 @@ static int do_errata(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) #endif #if defined(CONFIG_SYS_FSL_ERRATUM_ESDHC135) puts("Work-around for Erratum ESDHC135 enabled\n"); +#endif +#if defined(CONFIG_SYS_FSL_ERRATUM_ESDHC136) + puts("Work-around for Erratum ESDHC136 enabled\n"); #endif return 0; } diff --git a/arch/powerpc/cpu/mpc85xx/cpu_init.c b/arch/powerpc/cpu/mpc85xx/cpu_init.c index 1d016c4d04..354b222314 100644 --- a/arch/powerpc/cpu/mpc85xx/cpu_init.c +++ b/arch/powerpc/cpu/mpc85xx/cpu_init.c @@ -394,6 +394,14 @@ int cpu_init_r(void) setup_mp(); #endif +#ifdef CONFIG_SYS_FSL_ERRATUM_ESDHC136 + { + void *p; + p = (void *)CONFIG_SYS_DCSRBAR + 0x20520; + setbits_be32(p, 1 << (31 - 14)); + } +#endif + #ifdef CONFIG_SYS_LBC_LCRR /* * Modify the CLKDIV field of LCRR register to improve the writing diff --git a/include/configs/P4080DS.h b/include/configs/P4080DS.h index a15dd761b8..4dd7faa1bb 100644 --- a/include/configs/P4080DS.h +++ b/include/configs/P4080DS.h @@ -37,6 +37,7 @@ #define CONFIG_SYS_FSL_ERRATUM_ESDHC111 #define CONFIG_SYS_FSL_ERRATUM_ESDHC135 +#define CONFIG_SYS_FSL_ERRATUM_ESDHC136 #define CONFIG_SYS_P4080_ERRATUM_CPU22 #define CONFIG_SYS_P4080_ERRATUM_SERDES8 -- 2.39.5