linux-kernel - Re: [PATCH] gpio: mxc: add power management support

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Date:   Tue, 17 Jul 2018 10:43:32 -0300
From:   Fabio Estevam <festevam@...il.com>
To:     Anson Huang <anson.huang@....com>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        dl-linux-imx <linux-imx@....com>
Subject: Re: [PATCH] gpio: mxc: add power management support

Hi Anson,

On Mon, Jul 16, 2018 at 3:14 AM, Anson Huang <anson.huang@....com> wrote:

> OK, since i.MX7D has same GPIO type as i.MX35, to make it simple, I just added
> a flag to indicate whether it supports save/restore, only i.MX7D enables

In imx7s.dtsi the gpio nodes have:

compatible = "fsl,imx7d-gpio", "fsl,imx35-gpio";

If you add fsl,imx7d-gpio entry in the gpio driver, then the match
will be done against "fsl,imx7d-gpio" since it is more specific.

Then in the mx8 dts you can add:

compatible = "fsl,imx8m-gpio", "fsl,imx7d-gpio";

and it will also match the more generic "fsl,imx7d-gpio" compatible.

> the flag now, since other i.MX8 SoCs' dts is NOT upstreamed yet, so I did NOT add
> support for i.MX8 SoCs, please help review V2 patch, thanks.

I did not see the v2. Did you put me on Cc?