Re: [PATCH 23/33] ARM: dts: exynos: Remove empty camera pinctrl configuration in Odroid X/U3
From: Sylwester Nawrocki <snawrocki@kernel.org>
Date: 2020-08-31 10:35:46
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linux-devicetree, linux-samsung-soc, lkml
Hi, On 8/31/20 10:38, Krzysztof Kozlowski wrote:
On Mon, 31 Aug 2020 at 10:31, Marek Szyprowski [off-list ref] wrote:quoted
On 30.08.2020 15:51, Krzysztof Kozlowski wrote:quoted
The camera's pinctrl configuration is simply empty and not effective. Remove it to fix dtbs_check warning: arch/arm/boot/dts/exynos4412-odroidx.dt.yaml: camera: pinctrl-0: True is not of type 'array' Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>I think that this was intentional to properly enable support for mem-2-mem mode in Exynos4-IS (FIMC), but I'm not sure what are the default values if no pinctrl properties are provided. Sylwester, could you comment?Indeed it could be intentional... I see now errors: [ 33.752203] s5p-fimc-md soc:camera: Failed to get pinctrl: -19 I wonder why getting an empty pinctrl is needed... maybe the driver should accept missing pinctrl?
It might have been better to have the pinctrl properties optional, as there might be boards without the image sensor attached and FIMC could still be used in memory-to-memory mode, as Marek pointed out. But it seems too late now to change that. The binding defines the pinctrl properties as required (Documentation/devicetree/bindings/media/samsung-fimc.txt) and we need to keep them in dtses. -- Regards, Sylwester _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel