linux-kernel - Re: [RFC 02/11] arm64: dts: imx8mp: Add AIPS 4 and 5

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Message-ID: <20200323104815.u5f4cwdrs2nongm2@fsr-ub1664-175>
Date:   Mon, 23 Mar 2020 12:48:15 +0200
From:   Abel Vesa <abel.vesa@....com>
To:     Peng Fan <peng.fan@....com>
Cc:     Rob Herring <robh@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <kernel@...gutronix.de>,
        Fabio Estevam <fabio.estevam@....com>,
        Mike Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Lee Jones <lee.jones@...aro.org>,
        Anson Huang <anson.huang@....com>,
        Leonard Crestez <leonard.crestez@....com>,
        Jacky Bai <ping.bai@....com>, dl-linux-imx <linux-imx@....com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "linux-clk@...r.kernel.org" <linux-clk@...r.kernel.org>
Subject: Re: [RFC 02/11] arm64: dts: imx8mp: Add AIPS 4 and 5

On 20-03-13 07:44:43, Peng Fan wrote:
> > Subject: [RFC 02/11] arm64: dts: imx8mp: Add AIPS 4 and 5
> > 
> > There are 5 AIPS maps in total, according to the RM. Add the missing ones
> > here.
> > 
> > Signed-off-by: Abel Vesa <abel.vesa@....com>
> > ---
> >  arch/arm64/boot/dts/freescale/imx8mp.dtsi | 16 ++++++++++++++++
> >  1 file changed, 16 insertions(+)
> > 
> > diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> > b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> > index 71b0c8f..a997ca7 100644
> > --- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> > +++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> > @@ -603,6 +603,22 @@
> >  			};
> >  		};
> > 
> > +		aips4: bus@...00000 {
> > +			compatible = "simple-bus";
> 
> "fsl,aips-bus", "simple-bus";
> 
> > +			reg = <0x32c00000 0x400000>;
> 
> Size is 64KB
> 
> > +			#address-cells = <1>;
> > +			#size-cells = <1>;
> > +			ranges;
> > +		};
> > +
> > +		aips5: bus@...00000 {
> > +			compatible = "simple-bus";
> > +			reg = <0x30c00000 0x400000>;
> 
> Ditto. Please correct compatible and reg.
> 

Will do in the next version.

> Without this, I think there is no need to only
> add bus here? It might be better to also include
> subnodes under aips bus.

AIPS 5 is needed by the next patch in this series.
So it wouldn't make sense to have a patch that adds
only the fifth one, skipping the fourth one.

> 
> Regards,
> Peng.
> 
> > +			#address-cells = <1>;
> > +			#size-cells = <1>;
> > +			ranges;
> > +		};
> > +
> >  		gic: interrupt-controller@...00000 {
> >  			compatible = "arm,gic-v3";
> >  			reg = <0x38800000 0x10000>,
> > --
> > 2.7.4
>