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From 2d68fa06d5cfcf38ce9bd551b478dab408141cce Mon Sep 17 00:00:00 2001
From: Mike Westerhof <mwester@dls.net>
Date: Fri, 8 Aug 2008 13:25:02 +0100
Subject: [PATCH] gta01-uart-fifo-trigger-sooner.patch
Set the UART FIFO to trigger earlier on the GTA01 device to minimize
UART overruns from the GSM.
Signed-off-by: Mike Westerhof <mwester@dls.net>
---
arch/arm/mach-s3c2410/mach-gta01.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/arch/arm/mach-s3c2410/mach-gta01.c b/arch/arm/mach-s3c2410/mach-gta01.c
index 9e42df0..4927cd4 100644
--- a/arch/arm/mach-s3c2410/mach-gta01.c
+++ b/arch/arm/mach-s3c2410/mach-gta01.c
@@ -87,6 +87,8 @@ static struct map_desc gta01_iodesc[] __initdata = {
#define UCON S3C2410_UCON_DEFAULT
#define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
#define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
+/* UFCON for the gta01 sets the FIFO trigger level at 4, not 8 */
+#define UFCON_GTA01_PORT0 S3C2410_UFCON_FIFOMODE
static struct s3c2410_uartcfg gta01_uartcfgs[] = {
[0] = {
@@ -94,7 +96,7 @@ static struct s3c2410_uartcfg gta01_uartcfgs[] = {
.flags = 0,
.ucon = UCON,
.ulcon = ULCON,
- .ufcon = UFCON,
+ .ufcon = UFCON_GTA01_PORT0,
},
[1] = {
.hwport = 1,
--
1.5.6.5
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