powerpc/t1040qds: Update DDR initialization related settings
Update following DDR related settings for T1040QDS
-Correct number of chip selects to two as t1040qds supports
two Chip selects.
-Update board_specific_parameters udimm structure with settings
derived via calibration.
-Reduced I2C speed to 50KHz as DDR-SPD does not get reliably
read at 400KHz.
Verified the updated settings to be working fine with dual-ranked
Micron, MT18KSF51272AZ-1G6 DIMM at data rate 833MT/s, 1333MT/s and
1600MT/s.
Signed-off-by: Poonam Aggrwal <poonam.aggrwal@freescale.com>
Signed-off-by: Priyanka Jain <Priyanka.Jain@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
diff --git a/include/configs/T1040QDS.h b/include/configs/T1040QDS.h
index 7d0bc04..cfaac43 100644
--- a/include/configs/T1040QDS.h
+++ b/include/configs/T1040QDS.h
@@ -167,7 +167,7 @@
/* CONFIG_NUM_DDR_CONTROLLERS is defined in include/asm/config_mpc85xx.h */
#define CONFIG_DIMM_SLOTS_PER_CTLR 1
-#define CONFIG_CHIP_SELECTS_PER_CTRL (4 * CONFIG_DIMM_SLOTS_PER_CTLR)
+#define CONFIG_CHIP_SELECTS_PER_CTRL (2 * CONFIG_DIMM_SLOTS_PER_CTLR)
#define CONFIG_DDR_SPD
#define CONFIG_SYS_FSL_DDR3
@@ -414,9 +414,9 @@
/* I2C */
#define CONFIG_SYS_I2C
#define CONFIG_SYS_I2C_FSL /* Use FSL common I2C driver */
-#define CONFIG_SYS_FSL_I2C_SPEED 400000 /* I2C speed in Hz */
+#define CONFIG_SYS_FSL_I2C_SPEED 50000 /* I2C speed in Hz */
#define CONFIG_SYS_FSL_I2C_SLAVE 0x7F
-#define CONFIG_SYS_FSL_I2C2_SPEED 400000 /* I2C speed in Hz */
+#define CONFIG_SYS_FSL_I2C2_SPEED 50000 /* I2C speed in Hz */
#define CONFIG_SYS_FSL_I2C2_SLAVE 0x7F
#define CONFIG_SYS_FSL_I2C_OFFSET 0x118000
#define CONFIG_SYS_FSL_I2C2_OFFSET 0x119000