linux-kernel - Re: [PATCH v3 4/6] gpio: vf610: add i.MX8ULP of_device

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Message-ID: <20230919-501837c1104366ba793b0c62@fedora>
Date:   Tue, 19 Sep 2023 10:04:04 +0100
From:   Conor Dooley <conor@...nel.org>
To:     "Peng Fan (OSS)" <peng.fan@....nxp.com>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Andy Shevchenko <andy@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Stefan Agner <stefan@...er.ch>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        linux-gpio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Peng Fan <peng.fan@....com>
Subject: Re: [PATCH v3 4/6] gpio: vf610: add i.MX8ULP of_device_id entry

On Mon, Sep 18, 2023 at 04:16:08PM +0800, Peng Fan (OSS) wrote:
> From: Peng Fan <peng.fan@....com>
> 
> i.MX8ULP GPIO supports similar feature as i.MX7ULP GPIO, but i.MX8ULP is
> not compatible with i.MX7ULP per binding doc. i.MX8ULP only has one
> register base, not two base.

"per binding doc" is a poor justification IMO, as you literally just
changed it earlier in this series. I think the commit message here
should re-explain the problem so that the rationale here is clear in
isolation.

> Add a new of_device_id entry for i.MX8ULP. But to make the driver could
> also support old bindings, check the compatible string first, before
> check the device data.

Sweet, seems like you have addressed the backwards compatibility stuff
for the old binding :)

Thanks,
Conor.

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