linux-kernel - Re: [PATCH 2/7] arm64: dts: renesas: r8a77970: add VSPD support

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Date:   Fri, 06 Apr 2018 16:33:21 +0300
From:   Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:     Jacopo Mondi <jacopo+renesas@...ndi.org>
Cc:     horms@...ge.net.au, magnus.damm@...il.com, geert@...ux-m68k.org,
        niklas.soderlund@...natech.se, sergei.shtylyov@...entembedded.com,
        dri-devel@...ts.freedesktop.org, linux-renesas-soc@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Vladimir Barinov <vladimir.barinov@...entembedded.com>,
        Niklas Söderlund 
        <niklas.soderlund+renesas@...natech.se>
Subject: Re: [PATCH 2/7] arm64: dts: renesas: r8a77970: add VSPD support

On Friday, 6 April 2018 16:08:07 EEST Jacopo Mondi wrote:
> From: Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
> 
> Describe VSPD0 in the R8A77970 device tree; it will be used by DU in
> the next patch...
> 
> Based on the original (and large) patch by Daisuke Matsushita
> <daisuke.matsushita.ns@...achi.com>.
> 
> Signed-off-by: Vladimir Barinov <vladimir.barinov@...entembedded.com>
> Signed-off-by: Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
> Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@...natech.se>
> ---
>  arch/arm64/boot/dts/renesas/r8a77970.dtsi | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/renesas/r8a77970.dtsi
> b/arch/arm64/boot/dts/renesas/r8a77970.dtsi index 71f466d..db06c94 100644
> --- a/arch/arm64/boot/dts/renesas/r8a77970.dtsi
> +++ b/arch/arm64/boot/dts/renesas/r8a77970.dtsi
> @@ -625,6 +625,16 @@
>  			power-domains = <&sysc R8A77970_PD_ALWAYS_ON>;
>  			resets = <&cpg 603>;
>  		};
> +
> +		vspd0: vsp@...20000 {
> +			compatible = "renesas,vsp2";
> +			reg = <0 0xfea20000 0 0x4000>;

You need to extend the memory region to include the V6_CLUTn_TBL* registers. I 
would recommend simply extending it to 0x8000 as all other VSP instances, even 
if the registers at 0x7000-0x7fff are not implemented.

Apart from that,

Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>

> +			interrupts = <GIC_SPI 169 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&cpg CPG_MOD 623>;
> +			power-domains = <&sysc R8A77970_PD_ALWAYS_ON>;
> +			resets = <&cpg 623>;
> +			renesas,fcp = <&fcpvd0>;
> +		};
>  	};
> 
>  	timer {

-- 
Regards,

Laurent Pinchart