mfd: axp20x: Mark AXP20X_VBUS_IPSOUT_MGMT as volatile

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commit dc91c3b6fe upstream.

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: cd53216625 ("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>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Samuel Holland 2020-01-04 19:24:08 -06:00 • committed by Greg Kroah-Hartman

parent 0ca288ee85

commit 0ca8d29f8c

1 changed files with 1 additions and 1 deletions

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drivers/mfd/axp20x.c

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