mpc83xx: Fix the bug of 266MHz data rate DDR

PATCH New Dave Liu 1 participant 1 message Jan 10, 2008

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Dave Liu

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2008-01-10 15:09 UTC #0 lore raw

PATCH 8/8 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 <[email protected]>

---
 cpu/mpc83xx/spd_sdram.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

cpu/mpc83xx/spd_sdram.c +3 -3

index 29dd470..0acca47 100644
@@ -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 */

Signature · 1 line

1.5.3.5.643.g40e25