diff options
Diffstat (limited to 'recipes-bsp/u-boot/u-boot-v2012.04.01/0021-Revert-i.MX28-Enable-additional-DRAM-address-bits.patch')
| -rw-r--r-- | recipes-bsp/u-boot/u-boot-v2012.04.01/0021-Revert-i.MX28-Enable-additional-DRAM-address-bits.patch | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/recipes-bsp/u-boot/u-boot-v2012.04.01/0021-Revert-i.MX28-Enable-additional-DRAM-address-bits.patch b/recipes-bsp/u-boot/u-boot-v2012.04.01/0021-Revert-i.MX28-Enable-additional-DRAM-address-bits.patch new file mode 100644 index 0000000..8ad0bf0 --- /dev/null +++ b/recipes-bsp/u-boot/u-boot-v2012.04.01/0021-Revert-i.MX28-Enable-additional-DRAM-address-bits.patch @@ -0,0 +1,50 @@ +From 3dfa10c1a1d49b3b5b7cf6652fe965d088d4abc0 Mon Sep 17 00:00:00 2001 +From: Marek Vasut <marex@denx.de> +Date: Thu, 3 May 2012 05:47:18 +0000 +Subject: [PATCH 21/56] Revert "i.MX28: Enable additional DRAM address bits" + +This reverts commit 69d26d09de1cb93e0a09ca71d9f0d41a66f0756a. + +Apparently, this commit got mainline only because of out-of-tree +port and causes breakage on board that is mainline. Revert. + +Reason: +* The OOT board has 512MB of DRAM, enabling this additional address + line enabled it to work fine with 512MB of RAM. +* Every mainline port has max. 256MB of DRAM, therefore this revert + has no impact on any mainline port +* Though this caused a problem with new M28 board with 256MB of DRAM + where the chips are wired differently. The patch-to-be-reverted + caused the DRAM to behave like this: + + [128MB chunk #1][128MB chunk #1 again][128MB chunk #2][128MB chunk #2 again] + +Therefore to retain the current one-memory-init-rules-them-all situation, +revert this patch until another board emerges and will actually be pushed +mainline that needs different setup. + +Signed-off-by: Marek Vasut <marex@denx.de> +Cc: Wolfgang Denk <wd@denx.de> +Cc: Detlev Zundel <dzu@denx.de> +Cc: Stefano Babic <sbabic@denx.de> +Cc: Fabio Estevam <festevam@gmail.com> +--- + arch/arm/cpu/arm926ejs/mx28/spl_mem_init.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/arch/arm/cpu/arm926ejs/mx28/spl_mem_init.c b/arch/arm/cpu/arm926ejs/mx28/spl_mem_init.c +index 911bbef..0f825ed 100644 +--- a/arch/arm/cpu/arm926ejs/mx28/spl_mem_init.c ++++ b/arch/arm/cpu/arm926ejs/mx28/spl_mem_init.c +@@ -39,7 +39,7 @@ uint32_t dram_vals[] = { + 0x00000000, 0x00000100, 0x00000000, 0x00000000, + 0x00000000, 0x00000000, 0x00000000, 0x00000000, + 0x00000000, 0x00000000, 0x00010101, 0x01010101, +- 0x000f0f01, 0x0f02010a, 0x00000000, 0x00010101, ++ 0x000f0f01, 0x0f02020a, 0x00000000, 0x00010101, + 0x00000100, 0x00000100, 0x00000000, 0x00000002, + 0x01010000, 0x05060302, 0x06005003, 0x0a0000c8, + 0x02009c40, 0x0000030c, 0x0036a609, 0x031a0612, +-- +1.7.10 + |