From: Chen-Yu Tsai <wens@csie.org>
To: Samuel Holland <samuel@sholland.org>
Cc: Sebastian Reichel <sre@kernel.org>,
Lee Jones <lee.jones@linaro.org>,
Hans de Goede <hdegoede@redhat.com>,
Oskari Lemmela <oskari@lemmela.net>,
Quentin Schulz <quentin.schulz@bootlin.com>,
"open list:THERMAL" <linux-pm@vger.kernel.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
linux-sunxi <linux-sunxi@googlegroups.com>,
stable <stable@vger.kernel.org>
Subject: Re: [PATCH v2 1/9] mfd: axp20x: Mark AXP20X_VBUS_IPSOUT_MGMT as volatile
Date: Sun, 5 Jan 2020 18:07:25 +0800 [thread overview]
Message-ID: <CAGb2v64Cep6CdTxi3nMXG71N+DydY99Y8WN0VyM3ZqK9e_EfGQ@mail.gmail.com> (raw)
In-Reply-To: <20200105012416.23296-2-samuel@sholland.org>
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>
next prev parent reply other threads:[~2020-01-05 10:07 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-05 1:24 [PATCH v2 0/9] X-Powers Power Supply Improvements Samuel Holland
2020-01-05 1:24 ` [PATCH v2 1/9] mfd: axp20x: Mark AXP20X_VBUS_IPSOUT_MGMT as volatile Samuel Holland
2020-01-05 10:07 ` Chen-Yu Tsai [this message]
2020-01-06 8:36 ` Lee Jones
2020-01-05 1:24 ` [PATCH v2 2/9] power: supply: axp20x_ac_power: Fix reporting online status Samuel Holland
2020-01-05 10:09 ` [linux-sunxi] " Chen-Yu Tsai
2020-01-05 13:00 ` Julian Calaby
2020-01-05 15:27 ` Samuel Holland
2020-01-05 1:24 ` [PATCH v2 3/9] power: supply: axp20x_ac_power: Allow offlining Samuel Holland
2020-01-05 10:11 ` [linux-sunxi] " Chen-Yu Tsai
2020-01-05 1:24 ` [PATCH v2 4/9] power: supply: axp20x_ac_power: Add wakeup control Samuel Holland
2020-01-05 10:24 ` [linux-sunxi] " Chen-Yu Tsai
2020-01-05 10:44 ` Chen-Yu Tsai
2020-01-05 1:24 ` [PATCH v2 5/9] power: supply: axp20x_usb_power: Remove unused device_node Samuel Holland
2020-01-05 10:25 ` Chen-Yu Tsai
2020-01-05 1:24 ` [PATCH v2 6/9] power: supply: axp20x_usb_power: Use a match structure Samuel Holland
2020-01-05 10:34 ` [linux-sunxi] " Chen-Yu Tsai
2020-01-05 17:58 ` Samuel Holland
2020-01-06 2:24 ` Chen-Yu Tsai
2020-01-05 1:24 ` [PATCH v2 7/9] power: supply: axp20x_usb_power: Allow offlining Samuel Holland
2020-01-05 10:40 ` [linux-sunxi] " Chen-Yu Tsai
2020-01-05 17:47 ` Samuel Holland
2020-01-06 2:22 ` Chen-Yu Tsai
2020-01-05 1:24 ` [PATCH v2 8/9] power: supply: axp20x_usb_power: Add wakeup control Samuel Holland
2020-01-05 10:47 ` [linux-sunxi] " Chen-Yu Tsai
2020-01-05 1:24 ` [PATCH v2 9/9] power: supply: axp20x_usb_power: Only poll while offline Samuel Holland
2020-01-06 4:27 ` [linux-sunxi] " Chen-Yu Tsai
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