From 05b01dd936b46f2c3cfbb10bc89c0ec79c745e5d Mon Sep 17 00:00:00 2001 From: Milo Kim Date: Wed, 24 Aug 2016 22:07:16 +0900 Subject: ARM: dts: exynos: Use 'hpd-gpios' instead of 'hpd-gpio' This patch enables getting a HPD GPIO descriptor quicker. The exynos-hdmi driver uses "hpd" for HDMI hot plug detection. static int hdmi_resources_init(struct hdmi_context *hdata) { ... hdata->hpd_gpio = devm_gpiod_get(dev, "hpd", GPIOD_IN); ... } This calls 'of_find_gpio()' and it generates the GPIO consumer ID by referring GPIO suffix. So 'hpd-gpios' is preferred on getting a GPIO descriptor. However, if the device tree uses 'hpd-gpio', then the exynos-hdmi driver always retries to get a GPIO descriptor because the first GPIO suffix is not 'gpio' but 'gpios'. So you always see the debug message below. of_get_named_gpiod_flags: can't parse 'hpd-gpios' property of node '/soc/hdmi@14530000[0]' Use the preferred property, 'hpd-gpios' instead of 'hpd-gpio'. Acked-by: Rob Herring Reviewed-by: Andrzej Hajda Cc: devicetree@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-samsung-soc@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Milo Kim Signed-off-by: Krzysztof Kozlowski --- arch/arm/boot/dts/exynos5250-arndale.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/arm/boot/dts/exynos5250-arndale.dts') diff --git a/arch/arm/boot/dts/exynos5250-arndale.dts b/arch/arm/boot/dts/exynos5250-arndale.dts index ea70603f660d..3d981f32874d 100644 --- a/arch/arm/boot/dts/exynos5250-arndale.dts +++ b/arch/arm/boot/dts/exynos5250-arndale.dts @@ -152,7 +152,7 @@ }; &hdmi { - hpd-gpio = <&gpx3 7 GPIO_ACTIVE_LOW>; + hpd-gpios = <&gpx3 7 GPIO_ACTIVE_LOW>; vdd_osc-supply = <&ldo10_reg>; vdd_pll-supply = <&ldo8_reg>; vdd-supply = <&ldo8_reg>; -- cgit v1.2.3