[U-Boot] [PATCH] armv7:ls1021a: Enable workaround for DDR erratum A-009942

Signed-off-by: Shengzhou Liu Shengzhou.Liu@nxp.com --- arch/arm/include/asm/arch-ls102xa/config.h | 1 + board/freescale/ls1021atwr/ls1021atwr.c | 7 ++++++- 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/arch/arm/include/asm/arch-ls102xa/config.h b/arch/arm/include/asm/arch-ls102xa/config.h index d408fe4..2a72438 100644 --- a/arch/arm/include/asm/arch-ls102xa/config.h +++ b/arch/arm/include/asm/arch-ls102xa/config.h @@ -131,6 +131,7 @@ #define CONFIG_USB_MAX_CONTROLLER_COUNT 1 #define CONFIG_SYS_FSL_ERRATUM_A008378 #define CONFIG_SYS_FSL_ERRATUM_A009663 +#define CONFIG_SYS_FSL_ERRATUM_A009942 #define CONFIG_SYS_FSL_MAX_NUM_OF_SEC 1 #else #error SoC not defined diff --git a/board/freescale/ls1021atwr/ls1021atwr.c b/board/freescale/ls1021atwr/ls1021atwr.c index 77482a9..d6c6bee 100644 --- a/board/freescale/ls1021atwr/ls1021atwr.c +++ b/board/freescale/ls1021atwr/ls1021atwr.c @@ -142,7 +142,7 @@ int checkboard(void) void ddrmc_init(void) { struct ccsr_ddr *ddr = (struct ccsr_ddr *)CONFIG_SYS_FSL_DDR_ADDR; - u32 temp_sdram_cfg; + u32 temp_sdram_cfg, tmp;

out_be32(&ddr->sdram_cfg, DDR_SDRAM_CFG);

@@ -189,6 +189,11 @@ void ddrmc_init(void) out_be32(&ddr->ddr_zq_cntl, DDR_DDR_ZQ_CNTL);

out_be32(&ddr->cs0_config_2, DDR_CS0_CONFIG_2); + + /* DDR erratum A-009942 */ + tmp = in_be32(&ddr->debug[28]); + out_be32(&ddr->debug[28], tmp | 0x0070006f); + udelay(1);

#ifdef CONFIG_DEEP_SLEEP