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authormirko <mirko@3c298f89-4303-0410-b956-a3cf2f4a3e73>2008-12-12 11:58:53 +0000
committermirko <mirko@3c298f89-4303-0410-b956-a3cf2f4a3e73>2008-12-12 11:58:53 +0000
commitfc54b9bf158eea9cae647ce2c58f7d9989af173a (patch)
tree54644c1229434d7ee13c5872bda4129e34337fc0 /target/linux/s3c24xx/patches-2.6.24/1312-GTA02-Improve-NAND-timings.patch
parentd9f49b62b28ebd245587854efa484974d90debbf (diff)
changed Makefile and profiles, added patches for kernel 2.6.24
(stable-branch of Openmoko) git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13613 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/s3c24xx/patches-2.6.24/1312-GTA02-Improve-NAND-timings.patch')
-rw-r--r--target/linux/s3c24xx/patches-2.6.24/1312-GTA02-Improve-NAND-timings.patch40
1 files changed, 40 insertions, 0 deletions
diff --git a/target/linux/s3c24xx/patches-2.6.24/1312-GTA02-Improve-NAND-timings.patch b/target/linux/s3c24xx/patches-2.6.24/1312-GTA02-Improve-NAND-timings.patch
new file mode 100644
index 000000000..67f867fca
--- /dev/null
+++ b/target/linux/s3c24xx/patches-2.6.24/1312-GTA02-Improve-NAND-timings.patch
@@ -0,0 +1,40 @@
+From e144bf41b8674bce731e1afebcd04030a85b4a5b Mon Sep 17 00:00:00 2001
+From: Harald Welte <laforge@openmoko.org>
+Date: Tue, 21 Oct 2008 08:13:09 +0100
+Subject: [PATCH] GTA02: Improve NAND timings
+
+Rather than using conservative default timings for the NAND flash,
+use the timings as specified in the S3C2442B MCP data sheet.
+
+Signed-off-by: Harald Welte <laforge@openmoko.org>
+---
+ arch/arm/mach-s3c2440/mach-gta02.c | 10 +++++-----
+ 1 files changed, 5 insertions(+), 5 deletions(-)
+
+diff --git a/arch/arm/mach-s3c2440/mach-gta02.c b/arch/arm/mach-s3c2440/mach-gta02.c
+index 1a9d823..b1aa95b 100644
+--- a/arch/arm/mach-s3c2440/mach-gta02.c
++++ b/arch/arm/mach-s3c2440/mach-gta02.c
+@@ -872,14 +872,14 @@ static struct s3c2410_nand_set gta02_nand_sets[] = {
+ },
+ };
+
+-/* choose a set of timings which should suit most 512Mbit
+- * chips and beyond.
++/* choose a set of timings derived from S3C@2442B MCP54
++ * data sheet (K5D2G13ACM-D075 MCP Memory)
+ */
+
+ static struct s3c2410_platform_nand gta02_nand_info = {
+- .tacls = 20,
+- .twrph0 = 60,
+- .twrph1 = 20,
++ .tacls = 0,
++ .twrph0 = 25,
++ .twrph1 = 15,
+ .nr_sets = ARRAY_SIZE(gta02_nand_sets),
+ .sets = gta02_nand_sets,
+ .software_ecc = 1,
+--
+1.5.6.5
+