]> git.sur5r.net Git - u-boot/commitdiff
ppc4xx: Fix initialization of the SDRAM_CODT register
authorCarolyn Smith <carolyn.smith@tektronix.com>
Thu, 12 Feb 2009 05:13:44 +0000 (06:13 +0100)
committerStefan Roese <sr@denx.de>
Thu, 12 Feb 2009 05:15:48 +0000 (06:15 +0100)
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>
cpu/ppc4xx/44x_spd_ddr2.c

index 1e495716b55bd913a8f27bf8fe2c33002afcca53..33788cc9006cc16df6c7ae3e0bdd53e4e8199be5 100644 (file)
@@ -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) {