linux-kernel - Re: [PATCH] ARM: dts: exynos: Add MFC memory banks for Peach boards

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Message-ID: <cef99c21-3886-c055-05bf-cd04e3b588b3@osg.samsung.com>
Date:	Fri, 6 May 2016 09:44:29 -0400
From:	Javier Martinez Canillas <javier@....samsung.com>
To:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
Cc:	linux-kernel@...r.kernel.org,
	Russell King <linux@....linux.org.uk>,
	Kukjin Kim <kgene@...nel.org>, devicetree@...r.kernel.org,
	Kumar Gala <galak@...eaurora.org>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	linux-samsung-soc@...r.kernel.org,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] ARM: dts: exynos: Add MFC memory banks for Peach boards

Hello Krzysztof,

On 04/28/2016 03:21 PM, Javier Martinez Canillas wrote:
> The MFC nodes with the memory regions reserved for memory allocations
> are missing in the Exynos5420 Peach Pit and Exynos5800 Peach Pi DTS.
> 
> This causes the s5p-mfc driver probe to fail with the following error:
> 
> [    4.140647] s5p_mfc_alloc_memdevs:1072: Failed to declare coherent memory for MFC device
> [    4.216163] s5p-mfc: probe of 11000000.codec failed with error -12
> 
> Add the missing nodes so the driver probes and the {en,de}coder video
> nodes are registered correctly:
> 
> [    4.096277] s5p-mfc 11000000.codec: decoder registered as /dev/video4
> [    4.102282] s5p-mfc 11000000.codec: encoder registered as /dev/video5
> 
> Signed-off-by: Javier Martinez Canillas <javier@....samsung.com>
>
> ---
> 
>  arch/arm/boot/dts/exynos5420-peach-pit.dts | 5 +++++
>  arch/arm/boot/dts/exynos5800-peach-pi.dts  | 5 +++++
>  2 files changed, 10 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/exynos5420-peach-pit.dts b/arch/arm/boot/dts/exynos5420-peach-pit.dts
> index b644858231b6..f9d2e4f1a0e0 100644
> --- a/arch/arm/boot/dts/exynos5420-peach-pit.dts
> +++ b/arch/arm/boot/dts/exynos5420-peach-pit.dts
> @@ -694,6 +694,11 @@
>  	status = "okay";
>  };
>  
> +&mfc {
> +	samsung,mfc-r = <0x43000000 0x800000>;
> +	samsung,mfc-l = <0x51000000 0x800000>;
> +};
> +
>  &mmc_0 {
>  	status = "okay";
>  	num-slots = <1>;
> diff --git a/arch/arm/boot/dts/exynos5800-peach-pi.dts b/arch/arm/boot/dts/exynos5800-peach-pi.dts
> index 6ba9aec15485..62ceb89e073f 100644
> --- a/arch/arm/boot/dts/exynos5800-peach-pi.dts
> +++ b/arch/arm/boot/dts/exynos5800-peach-pi.dts
> @@ -669,6 +669,11 @@
>  	status = "okay";
>  };
>  
> +&mfc {
> +	samsung,mfc-r = <0x43000000 0x800000>;
> +	samsung,mfc-l = <0x51000000 0x800000>;
> +};
> +
>  &mmc_0 {
>  	status = "okay";
>  	num-slots = <1>;
> 

Any comments about this patch?

Best regards,
-- 
Javier Martinez Canillas
Open Source Group
Samsung Research America