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powerpc/mpc8xxx: Fix DDR code for empty first DIMM slot and enable DQS_en

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Check second DIMM slot in case the first one is empty.
Honor DQS enable option for SDRAM mode register.

Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
York Sun
2011-08-26 11:32:40 -07:00
committed by Kumar Gala
parent f8bc7bb5a7
commit cae7c1b56b
2 changed files with 14 additions and 9 deletions
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4
arch/powerpc/include/asm/fsl_ddr_sdram.h
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@@ -92,6 +92,10 @@ typedef ddr3_spd_eeprom_t generic_spd_eeprom_t;
#define SDRAM_CFG2_D_INIT 0x00000010
#define SDRAM_CFG2_ODT_CFG_MASK 0x00600000
#define SDRAM_CFG2_ODT_NEVER 0
#define SDRAM_CFG2_ODT_ONLY_WRITE 1
#define SDRAM_CFG2_ODT_ONLY_READ 2
#define SDRAM_CFG2_ODT_ALWAYS 3
#define TIMING_CFG_2_CPO_MASK 0x0F800000