[PATCH] n35: Update GPIO documentation for Acer n35
From: Pinkava J. <hidden>
Date: 2010-06-23 20:20:16
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
Signed-off-by: Jiri Pinkava <redacted> --- 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 c6bf1cf..14c9882 100644
--- a/arch/arm/mach-s3c2410/mach-n30.c
+++ b/arch/arm/mach-s3c2410/mach-n30.c@@ -411,13 +411,11 @@ 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 output + * with value set to 1 before setting GPA12 to 0. */ if (machine_is_n30()) __raw_writel(0x007fffff, S3C2410_GPACON); if (machine_is_n35())
--
1.7.1