linux-kernel - Re: [PATCH V3] gpio: mxc: add power management support

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Message-ID: <CACRpkda-syvCjO2U9pnZdHKnGSeDB738tcjKG31kevF=hKcKQg@mail.gmail.com>
Date:   Sun, 29 Jul 2018 22:24:32 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Anson Huang <Anson.Huang@....com>
Cc:     "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        NXP Linux Team <Linux-imx@....com>,
        Fabio Estevam <fabio.estevam@....com>
Subject: Re: [PATCH V3] gpio: mxc: add power management support

On Wed, Jul 18, 2018 at 3:30 AM Anson Huang <Anson.Huang@....com> wrote:

> GPIO registers could lose context on i.MX7D, when
> enter LPSR mode, the whole SoC will be powered off
> except LPSR domain, GPIO banks will lose context
> in this case, need to restore the context after
> resume from LPSR mode.
>
> This patch adds new compatible string for i.MX7D
> which supports GPIO power off feature in suspend,
> and adds the GPIO save/restore operations in noirq
> suspend/resume phase, since GPIO is fundamental
> module which could be used by other peripherals'
> resume phase.
>
> Signed-off-by: Anson Huang <Anson.Huang@....com>

Patch applied with Fabio's ACK!

Yours,
Linus Walleij