During DDR-2133 operation, the transmit data eye margins determined during the memory controller initialization may be sub-optimal, set DEBUG_29[12] and DEBUG_29[13:16] = 4'b0100 before MEM_EN is set.
Signed-off-by: Shengzhou Liu Shengzhou.Liu@nxp.com --- arch/arm/include/asm/arch-fsl-layerscape/config.h | 1 + drivers/ddr/fsl/fsl_ddr_gen4.c | 10 +++++++++- 2 files changed, 10 insertions(+), 1 deletion(-)
diff --git a/arch/arm/include/asm/arch-fsl-layerscape/config.h b/arch/arm/include/asm/arch-fsl-layerscape/config.h index f876c56..a38dc0e 100644 --- a/arch/arm/include/asm/arch-fsl-layerscape/config.h +++ b/arch/arm/include/asm/arch-fsl-layerscape/config.h @@ -146,6 +146,7 @@ #define CONFIG_SYS_FSL_ERRATUM_A009801 #define CONFIG_SYS_FSL_ERRATUM_A009803 #define CONFIG_SYS_FSL_ERRATUM_A009942 +#define CONFIG_SYS_FSL_ERRATUM_A010165 #define CONFIG_SYS_FSL_MAX_NUM_OF_SEC 1 #elif defined(CONFIG_LS1043A) #define CONFIG_MAX_CPUS 4 diff --git a/drivers/ddr/fsl/fsl_ddr_gen4.c b/drivers/ddr/fsl/fsl_ddr_gen4.c index 1dc0631..5039f5d 100644 --- a/drivers/ddr/fsl/fsl_ddr_gen4.c +++ b/drivers/ddr/fsl/fsl_ddr_gen4.c @@ -56,7 +56,8 @@ void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs, u32 vref_seq2[3] = {0xc0, 0xf0, 0x70}; /* for range 2 */ u32 *vref_seq = vref_seq1; #endif -#ifdef CONFIG_SYS_FSL_ERRATUM_A009942 +#if defined(CONFIG_SYS_FSL_ERRATUM_A009942) | \ + defined(CONFIG_SYS_FSL_ERRATUM_A010165) ulong ddr_freq; u32 tmp; #endif @@ -271,6 +272,13 @@ void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs, ddr_out32(&ddr->debug[28], tmp | 0x0060007b); #endif
+#ifdef CONFIG_SYS_FSL_ERRATUM_A010165 + ddr_freq = get_ddr_freq(ctrl_num) / 1000000; + if ((ddr_freq > 1900) && (ddr_freq < 2300)) { + tmp = ddr_in32(&ddr->debug[28]); + ddr_out32(&ddr->debug[28], tmp | 0x000a0000); + } +#endif /* * For RDIMMs, JEDEC spec requires clocks to be stable before reset is * deasserted. Clocks start when any chip select is enabled and clock