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ppc4xx: Fix initialization of the SDRAM_CODT register

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This fixes the initialization of the SDRAM_CODT register in the ppc4xx DDR2
initialization code. It also removes use of the SDRAM_CODT_FEEDBACK_RCV_SINGLE_END
and SDRAM_CODT_FEEDBACK_DRV_SINGLE_END #define's since they are reserved bits.

Signed-off-by: Carolyn Smith <carolyn.smith@tektronix.com>
Signed-off-by: Stefan Roese <sr@denx.de>
This commit is contained in:
Carolyn Smith 2009-02-12 06:13:44 +01:00 committed by Stefan Roese
parent cef0efaf2f
commit 7369f0e384
1 changed files with 2 additions and 5 deletions
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7
cpu/ppc4xx/44x_spd_ddr2.c
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@ -1101,11 +1101,8 @@ static void program_codt(unsigned long *dimm_populated,
* Set the SDRAM Controller On Die Termination Register
*-----------------------------------------------------------------*/
mfsdram(SDRAM_CODT, codt);
codt |= (SDRAM_CODT_IO_NMODE
& (~SDRAM_CODT_DQS_SINGLE_END
& ~SDRAM_CODT_CKSE_SINGLE_END
& ~SDRAM_CODT_FEEBBACK_RCV_SINGLE_END
& ~SDRAM_CODT_FEEBBACK_DRV_SINGLE_END));
codt &= ~(SDRAM_CODT_DQS_SINGLE_END | SDRAM_CODT_CKSE_SINGLE_END);
codt |= SDRAM_CODT_IO_NMODE;
for (dimm_num = 0; dimm_num < num_dimm_banks; dimm_num++) {
if (dimm_populated[dimm_num] != SDRAM_NONE) {