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Date:   Sun, 5 Jan 2020 18:07:25 +0800
From:   Chen-Yu Tsai <wens@...e.org>
To:     Samuel Holland <samuel@...lland.org>
Cc:     Sebastian Reichel <sre@...nel.org>,
        Lee Jones <lee.jones@...aro.org>,
        Hans de Goede <hdegoede@...hat.com>,
        Oskari Lemmela <oskari@...mela.net>,
        Quentin Schulz <quentin.schulz@...tlin.com>,
        "open list:THERMAL" <linux-pm@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-sunxi <linux-sunxi@...glegroups.com>,
        stable <stable@...r.kernel.org>
Subject: Re: [PATCH v2 1/9] mfd: axp20x: Mark AXP20X_VBUS_IPSOUT_MGMT as volatile

On Sun, Jan 5, 2020 at 9:24 AM Samuel Holland <samuel@...lland.org> wrote:
>
> On AXP288 and newer PMICs, bit 7 of AXP20X_VBUS_IPSOUT_MGMT can be set
> to prevent using the VBUS input. However, when the VBUS unplugged and
> plugged back in, the bit automatically resets to zero.
>
> We need to set the register as volatile to prevent regmap from caching
> that bit. Otherwise, regcache will think the bit is already set and not
> write the register.
>
> Fixes: cd53216625a0 ("mfd: axp20x: Fix axp288 volatile ranges")
> Cc: stable@...r.kernel.org
> Signed-off-by: Samuel Holland <samuel@...lland.org>

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

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