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powerpc/t1040qds: Update DDR initialization related settings

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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>
This commit is contained in:
Priyanka Jain
2014-01-03 11:24:55 +05:30
committed by York Sun
parent b44bd2c73c
commit 2eb3ac7fe8
2 changed files with 15 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
include/configs/T1040QDS.h
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@@ -167,7 +167,7 @@ unsigned long get_board_ddr_clk(void);
/* 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 @@ unsigned long get_board_ddr_clk(void);
/* 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