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From d09acdd4292db1c10fb63f2f7247dd7ac800ead6 Mon Sep 17 00:00:00 2001
From: Jiri Pinkava <jiri.pinkava@vscht.cz>
Date: Sat, 29 May 2010 17:11:10 +0200
Subject: [PATCH 02/14] n35: Update GPIO documentation for Acer n35
Signed-off-by: Jiri Pinkava <jiri.pinkava@vscht.cz>
---
arch/arm/mach-s3c2410/mach-n30.c | 12 +++++-------
1 files changed, 5 insertions(+), 7 deletions(-)
diff --git a/arch/arm/mach-s3c2410/mach-n30.c b/arch/arm/mach-s3c2410/mach-n30.c
index e732619..abbb9b5 100644
--- a/arch/arm/mach-s3c2410/mach-n30.c
+++ b/arch/arm/mach-s3c2410/mach-n30.c
@@ -410,13 +410,11 @@ static struct s3c2410_platform_i2c __initdata n30_i2ccfg = {
static void __init n30_hwinit(void)
{
/* GPA0-11 special functions -- unknown what they do
- * GPA12 N30 special function -- unknown what it does
- * N35/PiN output -- unknown what it does
- *
- * A12 is nGCS1 on the N30 and an output on the N35/PiN. I
- * don't think it does anything useful on the N30, so I ought
- * to make it an output there too since it always driven to 0
- * as far as I can tell. */
+ * GPA12 N30 special function (nGCS1) -- unknown what it does
+ * PiN output -- unknown function
+ * N35 output -- turn on/off red led, 0 = normal operation,
+ * 1 = turn off red led at all. Note: GPD9 must be input or
+ * output with value set to 1 before setting GPA12 to 0. */
if (machine_is_n30())
__raw_writel(0x007fffff, S3C2410_GPACON);
if (machine_is_n35())
--
1.7.3.1
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