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driver/ddr/fsl: Add workaround for A009663

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Erratum A-009663 workaround requires to set DDR_INTERVAL[BSTOPRE] to 0
before setting DDR_SDRAM_CFG[MEM_EN] and set DDR_INTERVAL[BSTOPRE]
to the desired value after DDR initialization has completed.

When DDR controller is configured to operate in auto-precharge
mode(DDR_INTERVAL[BSTOPRE]=0), this workaround is not needed.

Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Reviewed-by: York Sun <york.sun@nxp.com>
This commit is contained in:
Shengzhou Liu 2015-12-16 16:45:41 +08:00 • committed by York Sun
parent 6f14e257c4
commit a994b3deb0
6 changed files with 20 additions and 0 deletions
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include/fsl_ddr_sdram.h
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@ -129,6 +129,7 @@ typedef struct ddr4_spd_eeprom_s generic_spd_eeprom_t;
#define SDRAM_CFG2_ODT_ONLY_READ 2
#define SDRAM_CFG2_ODT_ALWAYS 3
#define SDRAM_INTERVAL_BSTOPRE 0x3FFF
#define TIMING_CFG_2_CPO_MASK 0x0F800000
#if defined(CONFIG_SYS_FSL_DDR_VER) && \