diff options
Diffstat (limited to 'drivers/ddr')
| -rw-r--r-- | drivers/ddr/fsl/mpc85xx_ddr_gen3.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/drivers/ddr/fsl/mpc85xx_ddr_gen3.c b/drivers/ddr/fsl/mpc85xx_ddr_gen3.c index a9b085db8c..952b296dd8 100644 --- a/drivers/ddr/fsl/mpc85xx_ddr_gen3.c +++ b/drivers/ddr/fsl/mpc85xx_ddr_gen3.c @@ -370,6 +370,8 @@ step2: debug("Setting DEBUG_3[21] to 0x%08x\n", in_be32(&ddr->debug[2])); #endif /* part 1 of the workaound */ + /* Always start in self-refresh, clear after MEM_EN */ + setbits_be32(&ddr->sdram_cfg_2, SDRAM_CFG2_FRC_SR); /* * 500 painful micro-seconds must elapse between @@ -382,8 +384,6 @@ step2: #ifdef CONFIG_DEEP_SLEEP if (is_warm_boot()) { - /* enter self-refresh */ - setbits_be32(&ddr->sdram_cfg_2, SDRAM_CFG2_FRC_SR); /* do board specific memory setup */ board_mem_sleep_setup(); temp_sdram_cfg = (in_be32(&ddr->sdram_cfg) | SDRAM_CFG_BI); @@ -395,6 +395,10 @@ step2: out_be32(&ddr->sdram_cfg, temp_sdram_cfg | SDRAM_CFG_MEM_EN); asm volatile("sync;isync"); + /* Exit self-refresh after DDR conf as some ddr memories can fail. */ + clrbits_be32(&ddr->sdram_cfg_2, SDRAM_CFG2_FRC_SR); + asm volatile("sync;isync"); + total_gb_size_per_controller = 0; for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { if (!(regs->cs[i].config & 0x80000000)) @@ -544,9 +548,4 @@ step2: clrbits_be32(&ddr->sdram_cfg, 0x2); } #endif /* CONFIG_SYS_FSL_ERRATUM_DDR111_DDR134 */ -#ifdef CONFIG_DEEP_SLEEP - if (is_warm_boot()) - /* exit self-refresh */ - clrbits_be32(&ddr->sdram_cfg_2, SDRAM_CFG2_FRC_SR); -#endif } |