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Date:   Mon, 13 Jan 2020 23:15:32 +0100
From:   Wolfram Sang <wsa@the-dreams.de>
To:     Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Cc:     linux-i2c@vger.kernel.org, linux-amlogic@lists.infradead.org,
        khilman@baylibre.com, narmstrong@baylibre.com,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        b.galvani@gmail.com, jian.hu@amlogic.com
Subject: Re: [PATCH] i2c: meson: implement the master_xfer_atomic callback
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On Wed, Jan 08, 2020 at 12:29:01AM +0100, Martin Blumenstingl wrote:
> Boards with some of the 32-bit SoCs (mostly Meson8 and Meson8m2) use a
> Ricoh RN5T618 PMU which acts as system power controller. The driver for
> the system power controller may need to the I2C bus just before shutting
> down or rebooting the system. At this stage the interrupts may be
> disabled already.
>=20
> Implement the master_xfer_atomic callback so the driver for the RN5T618
> PMU can communicate properly with the PMU when shutting down or
> rebooting the board. The CTRL register has a status bit which can be
> polled to determine when processing has completed. According to the
> public S805 datasheet the value 0 means "idle" and 1 means "running".
>=20
> Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>

Applied to for-next, thanks!


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