From: Vasily Khoruzhick Date: Tue, 11 May 2010 06:55:11 +0000 (+0300) Subject: ARM: RX1950: configure GPG13-15 as input before suspend X-Git-Tag: v2.6.35-rc1~500^2~25^2 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=192ff91fc84e067a3babfddb96114a51c939548e;p=karo-tx-linux.git 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 Signed-off-by: Ben Dooks --- 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)