Messages in this thread |  | | From | Chen-Yu Tsai <> | Date | Sun, 5 Jan 2020 18:07:25 +0800 | Subject | Re: [PATCH v2 1/9] mfd: axp20x: Mark AXP20X_VBUS_IPSOUT_MGMT as volatile |
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On Sun, Jan 5, 2020 at 9:24 AM Samuel Holland <samuel@sholland.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@vger.kernel.org > Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
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