From mboxrd@z Thu Jan 1 00:00:00 1970 From: anarsoul@gmail.com (Vasily Khoruzhick) Date: Tue, 11 May 2010 09:55:11 +0300 Subject: [PATCH v2 5/5] rx1950: configure GPG13-15 as input before suspend In-Reply-To: <1273560911-18153-1-git-send-email-anarsoul@gmail.com> References: <1273560911-18153-1-git-send-email-anarsoul@gmail.com> Message-ID: <1273560911-18153-6-git-send-email-anarsoul@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 --- arch/arm/mach-s3c2410/pm.c | 11 +++++++++++ 1 files changed, 11 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-s3c2410/pm.c b/arch/arm/mach-s3c2410/pm.c index 6a61486..725636f 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) -- 1.7.0.4