From: Dave Liu Date: Thu, 10 Jan 2008 15:09:33 +0000 (+0800) Subject: mpc83xx: Fix the bug of 266MHz data rate DDR X-Git-Tag: v2008.10-rc1~808^2~32^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=061aad4d320dddce26247699dcf2875ee2ea1366;p=platform%2Fkernel%2Fu-boot.git mpc83xx: Fix the bug of 266MHz data rate DDR The DDR doesn't work on the 266MHz data rate, the patch fix the bug. Signed-off-by: Dave Liu Signed-off-by: Kim Phillips --- diff --git a/cpu/mpc83xx/spd_sdram.c b/cpu/mpc83xx/spd_sdram.c index 29dd470..0acca47 100644 --- a/cpu/mpc83xx/spd_sdram.c +++ b/cpu/mpc83xx/spd_sdram.c @@ -574,9 +574,9 @@ long int spd_sdram() */ cpo = 0; if (spd.mem_type == SPD_MEMTYPE_DDR2) { - if (effective_data_rate == 266 || effective_data_rate == 333) { - cpo = 0x7; /* READ_LAT + 5/4 */ - } else if (effective_data_rate == 400) { + if (effective_data_rate == 266) { + cpo = 0x4; /* READ_LAT + 1/2 */ + } else if (effective_data_rate == 333 || effective_data_rate == 400) { cpo = 0x7; /* READ_LAT + 5/4 */ } else { /* Automatic calibration */