linux-kernel - Re: [PATCH v4 2/7] dt-bindings: gpio: vf610: correct i.MX8ULP and i.MX93

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Date:   Thu, 28 Sep 2023 11:29:12 -0500
From:   Rob Herring <robh@...nel.org>
To:     "Peng Fan (OSS)" <peng.fan@....nxp.com>
Cc:     devicetree@...r.kernel.org, Conor Dooley <conor+dt@...nel.org>,
        linux-arm-kernel@...ts.infradead.org,
        Stefan Agner <stefan@...er.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Andy Shevchenko <andy@...nel.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Marco Felsch <m.felsch@...gutronix.de>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-gpio@...r.kernel.org, Peng Fan <peng.fan@....com>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 2/7] dt-bindings: gpio: vf610: correct i.MX8ULP and
 i.MX93


On Tue, 26 Sep 2023 11:33:18 +0800, Peng Fan (OSS) wrote:
> From: Peng Fan <peng.fan@....com>
> 
> i.MX8ULP and i.MX93 actually has two interrupts for each gpio
> controller, one for Trustzone non-secure world, one for secure world.
> 
> And they has one register based, not two as i.MX7ULP or VF610.
> 
> Although the Linux Kernel driver gpio-vf610.c could work with
> fsl,imx7ulp-gpio compatible, it is based on some tricks did in
> device tree with some offset added to base address.
> 
> So actually i.MX8ULP/i.MX93 is not compatible with i.MX7ULP.
> 
> Last, i.MX93 is directly derived from i.MX8ULP, so make i.MX93 GPIO
> compatible with i.MX8ULP
> 
> Signed-off-by: Peng Fan <peng.fan@....com>
> ---
>  .../devicetree/bindings/gpio/gpio-vf610.yaml       | 36 +++++++++++++++++++---
>  1 file changed, 31 insertions(+), 5 deletions(-)
> 

Reviewed-by: Rob Herring <robh@...nel.org>