Internal memory controller counters can reach a bad state after training in DDR4 mode if accumulated ECC or DBI mode is eanbled.
Signed-off-by: York Sun yorksun@freescale.com --- Change log v2: Add access macros to handle big- and little-endian. These macros were added by other patches, but not yet merged. Add parentheses for logic in macro, as suggested by compiling warning
arch/arm/include/asm/arch-ls102xa/config.h | 1 + drivers/ddr/fsl/fsl_ddr_gen4.c | 8 ++++++++ include/fsl_ddr.h | 6 ++++++ 3 files changed, 15 insertions(+)
diff --git a/arch/arm/include/asm/arch-ls102xa/config.h b/arch/arm/include/asm/arch-ls102xa/config.h index 5e934da..a06ef9d 100644 --- a/arch/arm/include/asm/arch-ls102xa/config.h +++ b/arch/arm/include/asm/arch-ls102xa/config.h @@ -97,6 +97,7 @@ #define CONFIG_SYS_FSL_DDR_VER FSL_DDR_VER_5_0 #define CONFIG_SYS_FSL_SEC_COMPAT 5 #define CONFIG_USB_MAX_CONTROLLER_COUNT 1 +#define CONFIG_SYS_FSL_ERRATUM_A008378 #else #error SoC not defined #endif diff --git a/drivers/ddr/fsl/fsl_ddr_gen4.c b/drivers/ddr/fsl/fsl_ddr_gen4.c index a3c01e7..4eef047 100644 --- a/drivers/ddr/fsl/fsl_ddr_gen4.c +++ b/drivers/ddr/fsl/fsl_ddr_gen4.c @@ -171,6 +171,14 @@ void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs, ddr_out32(&ddr->debug[i], regs->debug[i]); } } +#ifdef CONFIG_SYS_FSL_ERRATUM_A008378 + /* Erratum applies when accumulated ECC is used, or DBI is enabled */ +#define IS_ACC_ECC_EN(v) ((v) & 0x4) +#define IS_DBI(v) ((((v) >> 12) & 0x3) == 0x2) + if (IS_ACC_ECC_EN(regs->ddr_sdram_cfg) || + IS_DBI(regs->ddr_sdram_cfg_3)) + ddr_setbits32(ddr->debug[28], 0x9 << 20); +#endif
/* * For RDIMMs, JEDEC spec requires clocks to be stable before reset is diff --git a/include/fsl_ddr.h b/include/fsl_ddr.h index 675557a..3286c95 100644 --- a/include/fsl_ddr.h +++ b/include/fsl_ddr.h @@ -23,9 +23,15 @@ #ifdef CONFIG_SYS_FSL_DDR_LE #define ddr_in32(a) in_le32(a) #define ddr_out32(a, v) out_le32(a, v) +#define ddr_setbits32(a, v) setbits_le32(a, v) +#define ddr_clrbits32(a, v) clrbits_le32(a, v) +#define ddr_clrsetbits32(a, clear, set) clrsetbits_le32(a, clear, set) #else #define ddr_in32(a) in_be32(a) #define ddr_out32(a, v) out_be32(a, v) +#define ddr_setbits32(a, v) setbits_be32(a, v) +#define ddr_clrbits32(a, v) clrbits_be32(a, v) +#define ddr_clrsetbits32(a, clear, set) clrsetbits_be32(a, clear, set) #endif
#define _DDR_ADDR CONFIG_SYS_FSL_DDR_ADDR