linux-kernel - Aw: Re: [PATCH] kbuild: Add DTC_CPP

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Date:   Thu, 19 Dec 2019 13:05:17 +0100
From:   "Frank Wunderlich" <frank-w@...lic-files.de>
To:     "Rob Herring" <robh+dt@...nel.org>
Cc:     "Masahiro Yamada" <masahiroy@...nel.org>,
        "Linux Kbuild mailing list" <linux-kbuild@...r.kernel.org>,
        "Michal Marek" <michal.lkml@...kovi.net>,
        "Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
        "Frank Rowand" <frowand.list@...il.com>,
        DTML <devicetree@...r.kernel.org>
Subject: Aw: Re: [PATCH] kbuild: Add DTC_CPP_FLAGS

Hi Rob,

so the way you prefer is this one (use new file for additions and including the board dts):

arch/arm64/boot/dts/mediatek/mt7622-bpi-r64-mt7531.dts (example for mt7531-phy)

/*
 * Copyright (c) 2018 MediaTek Inc.
 * Author:
 *
 * SPDX-License-Identifier: (GPL-2.0 OR MIT)
 */

/dts-v1/;

#include "mt7622-bananapi-bpi-r64.dts"

/ {
        gsw: gsw@0 {
                compatible = "mediatek,mt753x";
                mediatek,ethsys = <&ethsys>;
                #address-cells = <1>;
                #size-cells = <0>;
        };
};

&gsw {
        mediatek,mdio = <&mdio>;
        mediatek,portmap = "wllll";
        mediatek,mdio_master_pinmux = <0>;
        reset-gpios = <&pio 54 0>;
        interrupt-parent = <&pio>;
        interrupts = <53 IRQ_TYPE_LEVEL_HIGH>;
        status = "okay";

        port5: port@5 {
                compatible = "mediatek,mt753x-port";
                reg = <5>;
                phy-mode = "rgmii";
                fixed-link {
                        speed = <1000>;
                        full-duplex;
                };
        };

        port6: port@6 {
                compatible = "mediatek,mt753x-port";
                reg = <6>;
                phy-mode = "2500base-x";
                fixed-link {
                        speed = <2500>;
                        full-duplex;
                };
        };
};

at least it compiles and after decompile the new nodes are visible...

is there any way to drop nodes (in case dsa-driver gets merged i don't need it in the other 2)? i can disable them, but they will be present.

regards Frank


> Gesendet: Mittwoch, 18. Dezember 2019 um 14:51 Uhr
> Von: "Rob Herring" <robh+dt@...nel.org>
> NAK. #ifdefs and complex macros in particular are features we don't
> want in dts files.
>
> Rob