driver/ddr/fsl: Add workaround for A008336

Erratum A008336 requires setting EDDRTQCR1[2] in DDRC DCSR space
for 64-bit DDR controllers.

Signed-off-by: York Sun <yorksun@freescale.com>

arch/arm/include/asm/arch-fsl-lsch3/config.h

@@ -30,6 +30,11 @@
 #define CONFIG_SYS_FSL_PMU_CLTBENR		(CONFIG_SYS_FSL_PMU_ADDR + \
 						 0x18A0)
 
+#define CONFIG_SYS_FSL_DCSR_DDR_ADDR		0x70012c000ULL
+#define CONFIG_SYS_FSL_DCSR_DDR2_ADDR		0x70012d000ULL
+#define CONFIG_SYS_FSL_DCSR_DDR3_ADDR		0x700132000ULL
+#define CONFIG_SYS_FSL_DCSR_DDR4_ADDR		0x700133000ULL
+
 #define I2C1_BASE_ADDR				(CONFIG_SYS_IMMR + 0x01000000)
 #define I2C2_BASE_ADDR				(CONFIG_SYS_IMMR + 0x01010000)
 #define I2C3_BASE_ADDR				(CONFIG_SYS_IMMR + 0x01020000)

drivers/ddr/fsl/fsl_ddr_gen4.c

@@ -32,24 +32,39 @@ void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
 	u32 temp_sdram_cfg;
 	u32 total_gb_size_per_controller;
 	int timeout;
+#ifdef CONFIG_SYS_FSL_ERRATUM_A008336
+	u32 *eddrtqcr1;
+#endif
 
 	switch (ctrl_num) {
 	case 0:
 		ddr = (void *)CONFIG_SYS_FSL_DDR_ADDR;
+#ifdef CONFIG_SYS_FSL_ERRATUM_A008336
+		eddrtqcr1 = (void *)CONFIG_SYS_FSL_DCSR_DDR_ADDR + 0x800;
+#endif
 		break;
 #if defined(CONFIG_SYS_FSL_DDR2_ADDR) && (CONFIG_NUM_DDR_CONTROLLERS > 1)
 	case 1:
 		ddr = (void *)CONFIG_SYS_FSL_DDR2_ADDR;
+#ifdef CONFIG_SYS_FSL_ERRATUM_A008336
+		eddrtqcr1 = (void *)CONFIG_SYS_FSL_DCSR_DDR2_ADDR + 0x800;
+#endif
 		break;
 #endif
 #if defined(CONFIG_SYS_FSL_DDR3_ADDR) && (CONFIG_NUM_DDR_CONTROLLERS > 2)
 	case 2:
 		ddr = (void *)CONFIG_SYS_FSL_DDR3_ADDR;
+#ifdef CONFIG_SYS_FSL_ERRATUM_A008336
+		eddrtqcr1 = (void *)CONFIG_SYS_FSL_DCSR_DDR3_ADDR + 0x800;
+#endif
 		break;
 #endif
 #if defined(CONFIG_SYS_FSL_DDR4_ADDR) && (CONFIG_NUM_DDR_CONTROLLERS > 3)
 	case 3:
 		ddr = (void *)CONFIG_SYS_FSL_DDR4_ADDR;
+#ifdef CONFIG_SYS_FSL_ERRATUM_A008336
+		eddrtqcr1 = (void *)CONFIG_SYS_FSL_DCSR_DDR4_ADDR + 0x800;
+#endif
 		break;
 #endif
 	default:
@@ -60,6 +75,13 @@ void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
 	if (step == 2)
 		goto step2;
 
+#ifdef CONFIG_SYS_FSL_ERRATUM_A008336
+#ifdef CONFIG_LS2085A
+	/* A008336 only applies to general DDR controllers */
+	if ((ctrl_num == 0) || (ctrl_num == 1))
+#endif
+		ddr_out32(eddrtqcr1, 0x63b30002);
+#endif
 	if (regs->ddr_eor)
 		ddr_out32(&ddr->eor, regs->ddr_eor);