linux-kernel - Re: [PATCH v1 18/19] arm64: dts: nuvoton: Add initial NPCM845 EVB device tree

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Message-ID: <CAK8P3a1LCkM-w_Oi2qUqgq_Qxsg64uoGg5aaz=X8pBENHBhj0A@mail.gmail.com>
Date:   Mon, 23 May 2022 11:39:48 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Tomer Maimon <tmaimon77@...il.com>
Cc:     Avi Fishman <avifishman70@...il.com>,
        Tali Perry <tali.perry1@...il.com>,
        Joel Stanley <joel@....id.au>,
        Patrick Venture <venture@...gle.com>,
        Nancy Yuen <yuenn@...gle.com>,
        Benjamin Fair <benjaminfair@...gle.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        gregkh <gregkh@...uxfoundation.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, Arnd Bergmann <arnd@...db.de>,
        Olof Johansson <olof@...om.net>,
        Jiri Slaby <jirislaby@...nel.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Marcel Ziswiler <marcel.ziswiler@...adex.com>,
        Vinod Koul <vkoul@...nel.org>,
        Biju Das <biju.das.jz@...renesas.com>,
        Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@...hiba.co.jp>,
        robert.hancock@...ian.com,
        "nathan=20Neusch=C3=A4fer?=" <j.neuschaefer@....net>,
        Lubomir Rintel <lkundrak@...sk>, SoC Team <soc@...nel.org>,
        DTML <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-clk <linux-clk@...r.kernel.org>,
        "open list:SERIAL DRIVERS" <linux-serial@...r.kernel.org>,
        LINUXWATCHDOG <linux-watchdog@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v1 18/19] arm64: dts: nuvoton: Add initial NPCM845 EVB
 device tree

On Sun, May 22, 2022 at 5:50 PM Tomer Maimon <tmaimon77@...il.com> wrote:
> +/ {
> +       model = "Nuvoton npcm845 Development Board (Device Tree)";
> +       compatible = "nuvoton,npcm845";
> +
> +       aliases {
> +               serial0 = &serial0;
> +               serial1 = &serial1;
> +               serial2 = &serial2;
> +               serial3 = &serial3;
> +       };

> +               apb {
> +                       serial0: serial@0 {
> +                               status = "okay";
> +                       };
> +
> +                       serial1: serial@...0 {
> +                               status = "disabled";
> +                       };
> +
> +                       serial2: serial@...0 {
> +                               status = "disabled";
> +                       };
> +
> +                       serial3: serial@...0 {
> +                               status = "disabled";
> +                       };

Please drop the aliases for disabled uarts. It probably also makes
sense to have the status="disabled" properties in the .dtsi file and
only override them when you explicitly want to enable a uart for a
board.

       Arnd