[U-Boot] [PATCH] Fix AMCC Sequoia board DDR memory configuration

Mikhail Zolotaryov lebon at lebon.org.ua
Wed Mar 11 09:54:46 CET 2009


Sequoia board schematics (DES0211_11_SCH_11.pdf, page 5, unit U1D) 
specifies that BankSel#1 is not connected, while bootloader memory 
configuration is (board/amcc/sequoia/sdram.c):
       mtsdram(DDR0_10, 0x00000300);
i.e. both Chip Selects used - not correct.

If we change to correct value here:
       mtsdram(DDR0_10, 0x00000100);
memory is accessible OK also.

Signed-off-by: Mikhail Zolotaryov <lebon at lebon.org.ua>
---

--- orig_2009.1/board/amcc/sequoia/sdram.c.orig	2009-03-11 10:36:35.000000000 +0200
+++ orig_2009.1/board/amcc/sequoia/sdram.c	2009-03-11 10:37:03.000000000 +0200
@@ -72,7 +72,7 @@
 	mtsdram(DDR0_07, 0x000D0100);
 	mtsdram(DDR0_08, 0x02430001);
 	mtsdram(DDR0_09, 0x00011D5F);
-	mtsdram(DDR0_10, 0x00000300);
+	mtsdram(DDR0_10, 0x00000100);
 	mtsdram(DDR0_11, 0x0027C800);
 	mtsdram(DDR0_12, 0x00000003);
 	mtsdram(DDR0_14, 0x00000000);



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