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

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Date:   Mon, 1 Mar 2021 14:53:21 +0000
From:   Fabrizio Castro <fabrizio.castro.jz@...esas.com>
To:     Laurent Pinchart <laurent.pinchart@...asonboard.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" 
        <linux-renesas-soc@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-api@...r.kernel.org" <linux-api@...r.kernel.org>,
        "linux-kernel@...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>,
        "REE dirk.behme@...bosch.com" <dirk.behme@...bosch.com>,
        Peter Erben <Peter.Erben@...bosch.com>
Subject: RE: [PATCH 5/7] arm64: dts: renesas: r8a77990: Add DAB support

Hi Laurent,

Thanks for your feedback!

> From: Laurent Pinchart <laurent.pinchart@...asonboard.com>
> Sent: 26 February 2021 12:47
> 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.

I will replace 0x00 with 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.

Thanks,
Fab

> 
> 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