linux-kernel - RE: [PATCH v6 7/8] ARM: dts: Introduce HPE GXP Device tree

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Message-ID: <PH0PR84MB17180215774D59A3EC277B1388C09@PH0PR84MB1718.NAMPRD84.PROD.OUTLOOK.COM>
Date:   Tue, 3 May 2022 15:07:44 +0000
From:   "Hawkins, Nick" <nick.hawkins@....com>
To:     Arnd Bergmann <arnd@...db.de>
CC:     "Verdun, Jean-Marie" <verdun@....com>,
        Joel Stanley <joel@....id.au>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Olof Johansson <olof@...om.net>, SoC Team <soc@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        DTML <devicetree@...r.kernel.org>
Subject: RE: [PATCH v6 7/8] ARM: dts: Introduce HPE GXP Device tree


On Mon, May 2, 2022 at 10:40 PM <nick.hawkins@....com> wrote:


> > +++ b/arch/arm/boot/dts/hpe-bmc-dl360gen10.dts

> In the board specific file, you normally have "aliases", "chosen" and "memory"
> nodes that define e.g. which uart is used for the console.

This is what I have come up with.

/ {
        #address-cells = <1>;
        #size-cells = <1>;
        compatible = "hpe,gxp-dl360gen10", "hpe,gxp";
        model = "Hewlett Packard Enterprise ProLiant dl360 Gen10";

        aliases {
                serial2 = &uartc;
        };

        chosen {
                bootargs = "console=ttyS2,115200";
        };

        memory@...00000 {
                device_type = "memory";
                reg = <0x40000000 0x20000000>;
        };
};

> > +/dts-v1/;
> > +/ {
> > +       model = "Hewlett Packard Enterprise GXP BMC";
> > +       compatible = "hpe,gxp", "hpe,gxp-dl360gen10";

> I think "hpe,gxp-dl360gen10" is misplaced here, if that is the identifier of a particular machine rather than the SoC.

Yes that does not look correct there it will now be compatible = "hpe,gxp";

> > +       memory@...00000 {
> > +               device_type = "memory";
> > +               reg = <0x40000000 0x20000000>;
> > +       };

> If the memory is outside of the SoC, it should not be here.

It is part of the SoC. Should I put it in the axi bus instead? If so would I need to create an axi for the .dts as well?

Thanks for the review,

-Nick Hawkins