ARM: OMAP: Enable 24xx GPIO autoidling

Enable 24xx GPIO autoidling

Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 10 insertions, 0 deletions

diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c
index 8bedc8f9b6e5..037a4930ec61 100644
--- a/arch/arm/plat-omap/gpio.c
+++ b/arch/arm/plat-omap/gpio.c
@@ -1082,6 +1082,10 @@ static int __init _omap_gpio_init(void)
                 if (bank->method == METHOD_GPIO_24XX) {
                         __raw_writel(0x00000000, bank->base + OMAP24XX_GPIO_IRQENABLE1);
                         __raw_writel(0xffffffff, bank->base + OMAP24XX_GPIO_IRQSTATUS1);
+                        __raw_writew(0x0015, bank->base + OMAP24XX_GPIO_SYSCONFIG);
+
+                        /* Initialize interface clock ungated, module enabled */
+                        __raw_writel(0, bank->base + OMAP24XX_GPIO_CTRL);
 
                         gpio_count = 32;
                 }
@@ -1104,6 +1108,12 @@ static int __init _omap_gpio_init(void)
         if (cpu_is_omap16xx())
                 omap_writel(omap_readl(ULPD_CAM_CLK_CTRL) | 0x04, ULPD_CAM_CLK_CTRL);
 
+#ifdef CONFIG_ARCH_OMAP24XX
+        /* Enable autoidle for the OCP interface */
+        if (cpu_is_omap24xx())
+                omap_writel(1 << 0, 0x48019010);
+#endif
+
         return 0;
 }