diff options
| author | Biwen Li <biwen.li@nxp.com> | 2020-04-09 20:44:48 +0800 |
|---|---|---|
| committer | Priyanka Jain <priyanka.jain@nxp.com> | 2020-04-10 17:23:41 +0530 |
| commit | 159e7a224dc08557f2c4a3ee493377bec4bd8e86 (patch) | |
| tree | e3299e287040d9be8ef5abc3fa6cf4da4d8a186c /drivers/ddr/fsl/mpc85xx_ddr_gen3.c | |
| parent | 31232de07ef2bd97ff67625976eecd97eeb1bd3d (diff) | |
Revert "mpc85xx: ddr: Always start DDR RAM in Self Refresh mode"
This reverts commit 2a5d5d27edfbdb0e02a7fcf05569f92c02ae44ee.
The commit breaks uboot boot (hang in ddr init)
on many PowerPC boards like P3041DS, P4080DS
Signed-off-by: Biwen Li <biwen.li@nxp.com>
Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>
Diffstat (limited to 'drivers/ddr/fsl/mpc85xx_ddr_gen3.c')
| -rw-r--r-- | drivers/ddr/fsl/mpc85xx_ddr_gen3.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/ddr/fsl/mpc85xx_ddr_gen3.c b/drivers/ddr/fsl/mpc85xx_ddr_gen3.c index 952b296dd8..a9b085db8c 100644 --- a/drivers/ddr/fsl/mpc85xx_ddr_gen3.c +++ b/drivers/ddr/fsl/mpc85xx_ddr_gen3.c @@ -370,8 +370,6 @@ 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 @@ -384,6 +382,8 @@ 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); @@ -395,10 +395,6 @@ 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)) @@ -548,4 +544,9 @@ 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 } |