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author | Milo Kim <woogyom.kim@gmail.com> | 2016-08-24 22:07:16 +0900 |
---|---|---|
committer | Krzysztof Kozlowski <krzk@kernel.org> | 2016-08-24 21:09:24 +0200 |
commit | 05b01dd936b46f2c3cfbb10bc89c0ec79c745e5d (patch) | |
tree | 9420b5613fa1062098bddc6c89d6636ad5e27cff /arch/arm/boot/dts/exynos5250-smdk5250.dts | |
parent | 5a5232d1932b5d1ca472037bc8b38c21fa0cb6f8 (diff) | |
download | linux-05b01dd936b46f2c3cfbb10bc89c0ec79c745e5d.tar.bz2 |
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 <robh@kernel.org>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
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 <woogyom.kim@gmail.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Diffstat (limited to 'arch/arm/boot/dts/exynos5250-smdk5250.dts')
-rw-r--r-- | arch/arm/boot/dts/exynos5250-smdk5250.dts | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/boot/dts/exynos5250-smdk5250.dts b/arch/arm/boot/dts/exynos5250-smdk5250.dts index 381af134c4c8..7f27263728a1 100644 --- a/arch/arm/boot/dts/exynos5250-smdk5250.dts +++ b/arch/arm/boot/dts/exynos5250-smdk5250.dts @@ -116,7 +116,7 @@ }; &hdmi { - hpd-gpio = <&gpx3 7 GPIO_ACTIVE_HIGH>; + hpd-gpios = <&gpx3 7 GPIO_ACTIVE_HIGH>; }; &i2c_0 { |