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Subject[PATCH 4/90] ARM: OMAP: Enable 24xx GPIO autoidling
Date
From: Juha Yrjola <juha.yrjola@solidboot.com>

Enable 24xx GPIO autoidling

Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
---
arch/arm/plat-omap/gpio.c | 10 ++++++++++
1 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c
index b8c01de..e2547a7 100644
--- a/arch/arm/plat-omap/gpio.c
+++ b/arch/arm/plat-omap/gpio.c
@@ -1083,6 +1083,10 @@ 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;
}
@@ -1105,6 +1109,12 @@ 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;
}

--
1.4.4.2
-
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