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40 lines
1.2 KiB
40 lines
1.2 KiB
From e144bf41b8674bce731e1afebcd04030a85b4a5b Mon Sep 17 00:00:00 2001
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From: Harald Welte <laforge@openmoko.org>
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Date: Tue, 21 Oct 2008 08:13:09 +0100
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Subject: [PATCH] GTA02: Improve NAND timings
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Rather than using conservative default timings for the NAND flash,
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use the timings as specified in the S3C2442B MCP data sheet.
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Signed-off-by: Harald Welte <laforge@openmoko.org>
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---
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arch/arm/mach-s3c2440/mach-gta02.c | 10 +++++-----
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1 files changed, 5 insertions(+), 5 deletions(-)
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diff --git a/arch/arm/mach-s3c2440/mach-gta02.c b/arch/arm/mach-s3c2440/mach-gta02.c
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index 1a9d823..b1aa95b 100644
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--- a/arch/arm/mach-s3c2440/mach-gta02.c
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+++ b/arch/arm/mach-s3c2440/mach-gta02.c
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@@ -872,14 +872,14 @@ static struct s3c2410_nand_set gta02_nand_sets[] = {
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},
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};
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-/* choose a set of timings which should suit most 512Mbit
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- * chips and beyond.
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+/* choose a set of timings derived from S3C@2442B MCP54
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+ * data sheet (K5D2G13ACM-D075 MCP Memory)
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*/
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static struct s3c2410_platform_nand gta02_nand_info = {
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- .tacls = 20,
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- .twrph0 = 60,
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- .twrph1 = 20,
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+ .tacls = 0,
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+ .twrph0 = 25,
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+ .twrph1 = 15,
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.nr_sets = ARRAY_SIZE(gta02_nand_sets),
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.sets = gta02_nand_sets,
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.software_ecc = 1,
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--
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1.5.6.5
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