OMAP2/3: Initialize gpio debounce register

Some bootloader may initialize debounce register and this will make
dbclk not consist with the debounce register after linux kernel boot
up.

Signed-off-by: janboe <janboe.ye@gmail.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c
index 7fd89ba..26b387c 100644 (file)
--- a/arch/arm/plat-omap/gpio.c
+++ b/arch/arm/plat-omap/gpio.c
@@ -1585,6 +1585,7 @@ static int __init _omap_gpio_init(void)
                        __raw_writel(0x00000000, bank->base + OMAP24XX_GPIO_IRQENABLE1);
                        __raw_writel(0xffffffff, bank->base + OMAP24XX_GPIO_IRQSTATUS1);
                        __raw_writew(0x0015, bank->base + OMAP24XX_GPIO_SYSCONFIG);
+                       __raw_writel(0x00000000, bank->base + OMAP24XX_GPIO_DEBOUNCE_EN);
 
                        /* Initialize interface clock ungated, module enabled */
                        __raw_writel(0, bank->base + OMAP24XX_GPIO_CTRL);