armv7:ls1021a: Enable workaround for DDR erratum A-009942
Signed-off-by: Shengzhou Liu <Shengzhou.Liu@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
diff --git a/arch/arm/include/asm/arch-ls102xa/config.h b/arch/arm/include/asm/arch-ls102xa/config.h
index ab9493f..f2ce793 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_ERRATUM_A010315
#define CONFIG_SYS_FSL_MAX_NUM_OF_SEC 1
#else
diff --git a/board/freescale/ls1021atwr/ls1021atwr.c b/board/freescale/ls1021atwr/ls1021atwr.c
index 4638bed..d96fd77 100644
--- a/board/freescale/ls1021atwr/ls1021atwr.c
+++ b/board/freescale/ls1021atwr/ls1021atwr.c
@@ -142,7 +142,7 @@
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 @@
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