linux-kernel - Re: [PATCH 5/7] arm64: dts: renesas: r8a77990: Add DAB support

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Message-ID: <YDjtyWUZ/rjskGGr@pendragon.ideasonboard.com>
Date:   Fri, 26 Feb 2021 14:47:05 +0200
From:   Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:     Fabrizio Castro <fabrizio.castro.jz@...esas.com>
Cc:     Rob Herring <robh+dt@...nel.org>, Arnd Bergmann <arnd@...db.de>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-renesas-soc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-api@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Chris Paterson <Chris.Paterson2@...esas.com>,
        Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@...renesas.com>,
        Phil Edworthy <phil.edworthy@...esas.com>,
        Dirk Behme <Dirk.Behme@...bosch.com>,
        Peter Erben <Peter.Erben@...bosch.com>
Subject: Re: [PATCH 5/7] arm64: dts: renesas: r8a77990: Add DAB support

Hi Fabrizio,

Thank you for the patch.

On Thu, Feb 25, 2021 at 10:51:45PM +0000, Fabrizio Castro wrote:
> R-Car E3 (a.k.a. r8a77990) comes with the DAB hardware accelerator.
> This patch adds SoC specific support.
> 
> Signed-off-by: Fabrizio Castro <fabrizio.castro.jz@...esas.com>
> ---
>  arch/arm64/boot/dts/renesas/r8a77990.dtsi | 12 ++++++++++++
>  1 file changed, 12 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/renesas/r8a77990.dtsi b/arch/arm64/boot/dts/renesas/r8a77990.dtsi
> index 5010f23fafcc..5a6b835f137a 100644
> --- a/arch/arm64/boot/dts/renesas/r8a77990.dtsi
> +++ b/arch/arm64/boot/dts/renesas/r8a77990.dtsi
> @@ -963,6 +963,18 @@ ipmmu_vp0: iommu@...90000 {
>  			#iommu-cells = <1>;
>  		};
>  
> +		dab: dab@...30000 {
> +			compatible = "renesas,dab-r8a77990",
> +				     "renesas,rcar-gen3-dab";
> +			reg = <0x00 0xe6730000 0x00 0x120>;

We often express the first cell as just 0.

			reg = <0 0xe6730000 0 0x120>;

> +			interrupts = <GIC_SPI 160 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&cpg CPG_MOD 1016>;

As the clock isn't documented in the documentation, I can't verify this
of the resets property :-S

> +			clock-names = "dab";

I'll comment on the clock name in the DT bindings.

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

> +			power-domains = <&sysc R8A77990_PD_ALWAYS_ON>;
> +			resets = <&cpg 1016>;
> +			status = "disabled";
> +		};
> +
>  		avb: ethernet@...00000 {
>  			compatible = "renesas,etheravb-r8a77990",
>  				     "renesas,etheravb-rcar-gen3";

-- 
Regards,

Laurent Pinchart