ppc4xx: Fix initialization of the SDRAM_CODT register

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>

diff --git a/cpu/ppc4xx/44x_spd_ddr2.c b/cpu/ppc4xx/44x_spd_ddr2.c
index 1e49571..33788cc 100644 (file)
--- a/cpu/ppc4xx/44x_spd_ddr2.c
+++ b/cpu/ppc4xx/44x_spd_ddr2.c
@@ -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) {