linux-kernel - Re: [PATCH 2/3] pinctrl: sunxi: Disable strict mode for old pinctrl drivers

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Message-ID: <CAGb2v656TCA3yqGP=Jb36weFUvQryC=AMi5TxP_tMbz8w-ajdg@mail.gmail.com>
Date:   Fri, 6 Oct 2017 16:34:07 +0800
From:   Chen-Yu Tsai <wens@...e.org>
To:     Maxime Ripard <maxime.ripard@...e-electrons.com>
Cc:     Chen-Yu Tsai <wens@...e.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        "linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>
Subject: Re: [PATCH 2/3] pinctrl: sunxi: Disable strict mode for old pinctrl drivers

On Fri, Oct 6, 2017 at 4:54 AM, Maxime Ripard
<maxime.ripard@...e-electrons.com> wrote:
> Old pinctrl drivers will need to disable strict mode for various reasons,
> among which:
>   - Some DT will still have a pinctrl group for each GPIO used, which will
>     be rejected by pin_request. While we could remove those nodes, we still
>     have to deal with old DTs.
>   - Some GPIOs on these boards need to have their pin configuration changed
>     (for bias or current), and there's no clear migration path
>
> Let's disable the strict mode on those SoCs so that there's no breakage.
>
> Signed-off-by: Maxime Ripard <maxime.ripard@...e-electrons.com>
> ---
>  drivers/pinctrl/sunxi/pinctrl-sun4i-a10.c | 1 +
>  drivers/pinctrl/sunxi/pinctrl-sun5i.c     | 1 +
>  drivers/pinctrl/sunxi/pinctrl-sun6i-a31.c | 1 +
>  drivers/pinctrl/sunxi/pinctrl-sun8i-a23.c | 1 +
>  drivers/pinctrl/sunxi/pinctrl-sun8i-a33.c | 1 +
>  drivers/pinctrl/sunxi/pinctrl-sun8i-h3.c  | 3 ++-
>  drivers/pinctrl/sunxi/pinctrl-sun9i-a80.c | 1 +

You should also set it for the R_PIO drivers.
IIRC you removed some entries for them in your
other patchset.

Otherwise,

Acked-by: Chen-Yu Tsai <wens@...e.org>