[PATCH v3] MediaTek PMIC support
s.hauer at pengutronix.de
Thu Feb 5 07:25:30 PST 2015
This series adds initial support for the MediaTek MT6397 PMIC and the
necessary infrastructure to attach it on the MT8135 / MT8173 SoCs.
The infrastructure includes:
- pericfg / infracfg controller support
The pericfg / infracfg controllers contain miscellaneous registers for
reset controllers and clocks.
- PMIC wrapper support
On MediaTek MT8135, MT8173 and other SoCs the PMIC is connected via
SPI. The SPI master interface is not directly visible to the CPU, but
only through the PMIC wrapper inside the SoC. The communication between
the SoC and the PMIC can optionally be encrypted. Also a non standard
Dual IO SPI mode can be used to increase speed. The MT8135 also supports
a special feature named "IP Pairing". With IP Pairing the pins of some
SoC internal peripherals can be on the PMIC. The signals of these pins
are routed over the SPI bus using the pwrap bridge. Because of these
optional non SPI conform features the PMIC driver is not implemented as
a SPI bus master driver.
The MT6397 PMIC itself is implemented as a regular mfd device driver which
uses regmap to access the PMIC registers.
This series also adds regulator support for the MT6397 PMIC.
The first 6 patches can be merged through the ARM SoC tree. The mfd
patch is independent of the first 6 patches and can be merged through the
mfd maintainer trees.
changes since v2:
- put device tree docs into a separate patch
- Fix lockdep issues in irq mt6397 handler
- cosmetic changes
Changes since v1:
- document reset bindings for infracfg/pericfg
- fix base addresses in infracfg binding example
- Remove more Email addresses from Flora Fu (She is not working at
MediaTek anymore, her address is no longer valid)
- drop Regulator support patch, it's already in next
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