From mboxrd@z Thu Jan  1 00:00:00 1970
From: Philipp Zabel <p.zabel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
Subject: Re: [PATCH v4] arm64: dts: mt8173: add mmsel clocks for 4K support
Date: Fri, 29 Jul 2016 11:53:10 +0200
Message-ID: <1469785990.3012.35.camel@pengutronix.de>
References: <1469783388-56804-1-git-send-email-bibby.hsieh@mediatek.com>
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To: Bibby Hsieh <bibby.hsieh-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
Cc: Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-mediatek-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, Pawel Moll <pawel.moll-5wv7dgnIgG8@public.gmane.org>, Ian Campbell <ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org>, Kumar Gala <galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>, Catalin Marinas <catalin.marinas-5wv7dgnIgG8@public.gmane.org>, Will Deacon <will.deacon-5wv7dgnIgG8@public.gmane.org>, Matthias Brugger <matthias.bgg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Daniel Kurtz <djkurtz-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>, Yingjoe Chen <yingjoe.chen-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>, Sascha Hauer <s.hauer-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>, James Liao <jamesjj.liao-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>, Lorenzo Pieralisi <lorenzo.pieralisi-5wv7dgnIgG8@public.gmane.org>, YH Huang <yh.huang-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>, CK Hu <ck.hu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>, Yong Wu <yong.wu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>, Eddie Huang <eddie.huang-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>, "dawei.chien-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org" <dawei.chien-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>, Chunfeng Yun <chunfeng.yun-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>, Ju
List-Id: devicetree@vger.kernel.org

Hi Bibby,

Am Freitag, den 29.07.2016, 17:09 +0800 schrieb Bibby Hsieh:
> To support HDMI 4K resolution, mmsys need clcok
> mm_sel to be 400MHz.
> 
> The board .dts file should override the clock rate
> property with the higher VENCPLL frequency the board
> supports HDMI 4K resolution.
> 
> Signed-off-by: Bibby Hsieh <bibby.hsieh-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
> ---
>  arch/arm64/boot/dts/mediatek/mt8173.dtsi |    2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/mediatek/mt8173.dtsi b/arch/arm64/boot/dts/mediatek/mt8173.dtsi
> index 78529e4..93d4d17 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8173.dtsi
> +++ b/arch/arm64/boot/dts/mediatek/mt8173.dtsi
> @@ -690,6 +690,8 @@
>  			compatible = "mediatek,mt8173-mmsys", "syscon";
>  			reg = <0 0x14000000 0 0x1000>;
>  			power-domains = <&scpsys MT8173_POWER_DOMAIN_MM>;
> +			clocks = <&topckgen CLK_TOP_MM_SEL>;
> +			clock-frequency  = <400000000>;

This is unchanged compared to v3, I suggest to use assigned-clocks /
assigned-clock-rates properties instead.

best regards
Philipp

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