Re: [PATCH v3 2/5] ARM: dts: exynos: Use 'hpd-gpios' instead of 'hpd-gpio'

[Krzysztof Kozlowski]

On Wed, Aug 24, 2016 at 10:07:16PM +0900, Milo Kim wrote:
> This patch enables getting a HPD GPIO descriptor quickly.
> 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]'
>

Thanks for fixing this, applied!

BR,
Krzysztof