driver/ddr/fsl: Add workaround for A009663

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>

diff --git a/arch/arm/include/asm/arch-fsl-layerscape/config.h b/arch/arm/include/asm/arch-fsl-layerscape/config.h
index 83a207c..f1b164f 100644 (file)
--- a/arch/arm/include/asm/arch-fsl-layerscape/config.h
+++ b/arch/arm/include/asm/arch-fsl-layerscape/config.h
@@ -118,7 +118,9 @@
 #define CONFIG_SYS_FSL_ERRATUM_A008585
 #define CONFIG_SYS_FSL_ERRATUM_A008751
 #define CONFIG_SYS_FSL_ERRATUM_A009635
+#define CONFIG_SYS_FSL_ERRATUM_A009663
 #define CONFIG_SYS_FSL_ERRATUM_A009942
+
 #elif defined(CONFIG_LS1043A)
 #define CONFIG_MAX_CPUS                                4
 #define CONFIG_SYS_CACHELINE_SIZE              64
@@ -167,6 +169,7 @@
 #define GICD_BASE              0x01401000
 #define GICC_BASE              0x01402000
 
+#define CONFIG_SYS_FSL_ERRATUM_A009663
 #define CONFIG_SYS_FSL_ERRATUM_A009929
 #else
 #error SoC not defined

diff --git a/arch/arm/include/asm/arch-ls102xa/config.h b/arch/arm/include/asm/arch-ls102xa/config.h
index f066480..424fe87 100644 (file)
--- a/arch/arm/include/asm/arch-ls102xa/config.h
+++ b/arch/arm/include/asm/arch-ls102xa/config.h
@@ -131,6 +131,7 @@
 #define CONFIG_SYS_FSL_SEC_COMPAT              5
 #define CONFIG_USB_MAX_CONTROLLER_COUNT                1
 #define CONFIG_SYS_FSL_ERRATUM_A008378
+#define CONFIG_SYS_FSL_ERRATUM_A009663
 #else
 #error SoC not defined
 #endif

diff --git a/arch/powerpc/cpu/mpc85xx/cmd_errata.c b/arch/powerpc/cpu/mpc85xx/cmd_errata.c
index a493556..3b06ae4 100644 (file)
--- a/arch/powerpc/cpu/mpc85xx/cmd_errata.c
+++ b/arch/powerpc/cpu/mpc85xx/cmd_errata.c
@@ -326,6 +326,9 @@ static int do_errata(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 #if defined(CONFIG_SYS_FSL_B4860QDS_XFI_ERR) && defined(CONFIG_B4860QDS)
        puts("Work-around for Erratum XFI on B4860QDS enabled\n");
 #endif
+#ifdef CONFIG_SYS_FSL_ERRATUM_A009663
+       puts("Work-around for Erratum A009663 enabled\n");
+#endif
 
        return 0;
 }

diff --git a/arch/powerpc/include/asm/config_mpc85xx.h b/arch/powerpc/include/asm/config_mpc85xx.h
index 674fac8..eccc146 100644 (file)
--- a/arch/powerpc/include/asm/config_mpc85xx.h
+++ b/arch/powerpc/include/asm/config_mpc85xx.h
@@ -808,6 +808,7 @@ defined(CONFIG_PPC_T1020) || defined(CONFIG_PPC_T1022)
 #define QE_NUM_OF_SNUM                 28
 #define CONFIG_SYS_FSL_SFP_VER_3_0
 #define CONFIG_SYS_FSL_ERRATUM_A008378
+#define CONFIG_SYS_FSL_ERRATUM_A009663
 
 #elif defined(CONFIG_PPC_T1024) || defined(CONFIG_PPC_T1023) ||\
 defined(CONFIG_PPC_T1014) || defined(CONFIG_PPC_T1013)
@@ -856,6 +857,7 @@ defined(CONFIG_PPC_T1014) || defined(CONFIG_PPC_T1013)
 #define QE_NUM_OF_SNUM                 28
 #define CONFIG_SYS_FSL_SFP_VER_3_0
 #define CONFIG_SYS_FSL_ERRATUM_A008378
+#define CONFIG_SYS_FSL_ERRATUM_A009663
 
 #elif defined(CONFIG_PPC_T2080) || defined(CONFIG_PPC_T2081)
 #define CONFIG_E6500

diff --git a/drivers/ddr/fsl/fsl_ddr_gen4.c b/drivers/ddr/fsl/fsl_ddr_gen4.c
index 0d9dd0b..6f76980 100644 (file)
--- a/drivers/ddr/fsl/fsl_ddr_gen4.c
+++ b/drivers/ddr/fsl/fsl_ddr_gen4.c
@@ -155,7 +155,12 @@ void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
        ddr_out32(&ddr->sdram_mode_15, regs->ddr_sdram_mode_15);
        ddr_out32(&ddr->sdram_mode_16, regs->ddr_sdram_mode_16);
        ddr_out32(&ddr->sdram_md_cntl, regs->ddr_sdram_md_cntl);
+#ifdef CONFIG_SYS_FSL_ERRATUM_A009663
+       ddr_out32(&ddr->sdram_interval,
+                 regs->ddr_sdram_interval & ~SDRAM_INTERVAL_BSTOPRE);
+#else
        ddr_out32(&ddr->sdram_interval, regs->ddr_sdram_interval);
+#endif
        ddr_out32(&ddr->sdram_data_init, regs->ddr_data_init);
        ddr_out32(&ddr->ddr_wrlvl_cntl, regs->ddr_wrlvl_cntl);
 #ifndef CONFIG_SYS_FSL_DDR_EMU
@@ -397,6 +402,11 @@ step2:
 
        if (timeout <= 0)
                printf("Waiting for D_INIT timeout. Memory may not work.\n");
+
+#ifdef CONFIG_SYS_FSL_ERRATUM_A009663
+       ddr_out32(&ddr->sdram_interval, regs->ddr_sdram_interval);
+#endif
+
 #ifdef CONFIG_DEEP_SLEEP
        if (is_warm_boot()) {
                /* exit self-refresh */

diff --git a/include/fsl_ddr_sdram.h b/include/fsl_ddr_sdram.h
index 9ea8b63..3699c04 100644 (file)
--- a/include/fsl_ddr_sdram.h
+++ b/include/fsl_ddr_sdram.h
@@ -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) && \