exynos: Add support for the DisplayPort hotplug detect
Allow this function to be selected using the pinmux API.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/cpu/armv7/exynos/pinmux.c b/arch/arm/cpu/armv7/exynos/pinmux.c
index be43e22..e97cb37 100644
--- a/arch/arm/cpu/armv7/exynos/pinmux.c
+++ b/arch/arm/cpu/armv7/exynos/pinmux.c
@@ -496,6 +496,16 @@
case PERIPH_ID_SPI4:
exynos5_spi_config(peripheral);
break;
+ case PERIPH_ID_DPHPD:
+ /* Set Hotplug detect for DP */
+ gpio_cfg_pin(EXYNOS5_GPIO_X07, S5P_GPIO_FUNC(0x3));
+
+ /*
+ * Hotplug detect should have an external pullup; disable the
+ * internal pulldown so they don't fight.
+ */
+ gpio_set_pull(EXYNOS5_GPIO_X07, S5P_GPIO_PULL_NONE);
+ break;
default:
debug("%s: invalid peripheral %d", __func__, peripheral);
return -1;
diff --git a/arch/arm/include/asm/arch-exynos/periph.h b/arch/arm/include/asm/arch-exynos/periph.h
index 5c1c3d4..fdc9e87 100644
--- a/arch/arm/include/asm/arch-exynos/periph.h
+++ b/arch/arm/include/asm/arch-exynos/periph.h
@@ -53,6 +53,7 @@
PERIPH_ID_PWM2,
PERIPH_ID_PWM3,
PERIPH_ID_PWM4,
+ PERIPH_ID_DPHPD,
PERIPH_ID_I2C10 = 203,
PERIPH_ID_NONE = -1,