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authorVasily Khoruzhick <anarsoul@gmail.com>2010-05-11 09:55:11 +0300
committerBen Dooks <ben-linux@fluff.org>2010-05-12 09:20:28 +0900
commit192ff91fc84e067a3babfddb96114a51c939548e (patch)
tree5496c57534ec7d0fd26a39e4002c63447cb8b438 /arch/arm
parent0741b7d2699d1e7b4ceab27522c9e5518b2dbd2c (diff)
downloadblackbird-op-linux-192ff91fc84e067a3babfddb96114a51c939548e.tar.gz
blackbird-op-linux-192ff91fc84e067a3babfddb96114a51c939548e.zip
ARM: RX1950: configure GPG13-15 as input before suspend
According to datasheet GPG13-15 must be configured as input in NAND boot mode, otherwise device will not be able to wake up Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/mach-s3c2410/pm.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c2410/pm.c b/arch/arm/mach-s3c2410/pm.c
index 6a61486ca755..725636fc4dc3 100644
--- a/arch/arm/mach-s3c2410/pm.c
+++ b/arch/arm/mach-s3c2410/pm.c
@@ -79,6 +79,17 @@ static void s3c2410_pm_prepare(void)
if ( machine_is_aml_m5900() )
s3c2410_gpio_setpin(S3C2410_GPF(2), 1);
+ if (machine_is_rx1950()) {
+ /* According to S3C2442 user's manual, page 7-17,
+ * when the system is operating in NAND boot mode,
+ * the hardware pin configuration - EINT[23:21] –
+ * must be set as input for starting up after
+ * wakeup from sleep mode
+ */
+ s3c_gpio_cfgpin(S3C2410_GPG(13), S3C2410_GPIO_INPUT);
+ s3c_gpio_cfgpin(S3C2410_GPG(14), S3C2410_GPIO_INPUT);
+ s3c_gpio_cfgpin(S3C2410_GPG(15), S3C2410_GPIO_INPUT);
+ }
}
static int s3c2410_pm_resume(struct sys_device *dev)
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