This fixes the initialization of the SDRAM_CODT register in the ppc4xx DDR2 initialization code. The changes were discussed with Stefan Roese and Adam Graham and tested by Adam.
Signed-off-by: Carolyn Smith carolyn.smith@tektronix.com --- diff -w -uprN old/cpu/ppc4xx/44x_spd_ddr2.c new/cpu/ppc4xx/44x_spd_ddr2.c --- old/cpu/ppc4xx/44x_spd_ddr2.c 2009-01-20 13:00:33.000000000 -0800 +++ new/cpu/ppc4xx/44x_spd_ddr2.c 2009-01-23 16:00:49.000000000 -0800 @@ -1104,11 +1104,14 @@ static void program_codt(unsigned long * * 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_IO_NMODE; + + codt &= ~(SDRAM_CODT_DQS_SINGLE_END | + SDRAM_CODT_CKSE_SINGLE_END | + SDRAM_CODT_FEEBBACK_RCV_SINGLE_END | + SDRAM_CODT_FEEBBACK_DRV_SINGLE_END); +
for (dimm_num = 0; dimm_num < num_dimm_banks; dimm_num++) { if (dimm_populated[dimm_num] != SDRAM_NONE) {