linux-kernel - Re: [PATCH 3/3] arm64: dts: imx8mp: add mu node

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Message-ID: <CAOMZO5DmiQbfJjTLKPiv6uUNaQ8ae-0h7uOpPf2J9ZMwDoE+Eg@mail.gmail.com>
Date:   Wed, 20 May 2020 00:06:36 -0300
From:   Fabio Estevam <festevam@...il.com>
To:     Peng Fan <peng.fan@....com>
Cc:     Shawn Guo <shawnguo@...nel.org>,
        Fabio Estevam <fabio.estevam@....com>,
        Sascha Hauer <kernel@...gutronix.de>,
        Aisheng Dong <aisheng.dong@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Stephen Boyd <sboyd@...nel.org>,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        dl-linux-imx <linux-imx@....com>,
        Leonard Crestez <leonard.crestez@....com>,
        Daniel Baluta <daniel.baluta@....com>,
        Lucas Stach <l.stach@...gutronix.de>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, linux-clk <linux-clk@...r.kernel.org>
Subject: Re: [PATCH 3/3] arm64: dts: imx8mp: add mu node

Hi Peng,

On Wed, May 20, 2020 at 12:01 AM Peng Fan <peng.fan@....com> wrote:

> Nothing specific in i.MX8MP for the mu part, so do we really need
> add "fsl,imx8mp-mu"?

It is good practice to add a more specific option.

Let's say in future a bug is found that affects imx8mp MU, then you
could fix the MU driver and keep the dtb compatibility.