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. > > 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". > > Signed-off-by: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx> Applied to for-next, thanks!
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