[PATCH 0/3] rockchip: Port IO-domain driver for RK3568 from linux

[Jonas Karlman]

This series port the IO-domain driver for RK3568 from linux. It is
necessary for the IO-domain setting of the SoC to match the voltage
supplied by the regulators.

The driver auto probe after bind and configures IO-domain based on the
voltage reported by the regulators. This fixes issues observed while
working on a gmac driver for RK3568 devices. The IO-domain setting
default to 3v3, however some vccio domains may be supplied by 1v8.

I skipped a patch that fixes rk809 switch regulators to report voltage
due to a discrepancy between dt-binding and reference schematics.

In mfd/rockchip,rk809.yaml:
vcc8-supply: The input supply for SWITCH_REG1.
vcc9-supply: The input supply for DCDC_REG5 and SWITCH_REG2.

In reference schematics:
VCC8: Switch2
VCC9: Switch1 and BUCK5

Vendor U-Boot use the input supply based on schematics to report voltage.

The IO-domain driver will just continue to next IO-domain when a
regulator is reporting 0 uV.

Patch 1 fixes rk8xx buck regulator driver to report correct voltage.
Patch 2 adds protection so that regulator autoset only happens one time.
Patch 3 adds the IO-domain driver.

This series can also be found at [1]

[1] https://github.com/Kwiboo/u-boot-rockchip/commits/rk3568-io-domain-v1

Jonas Karlman (2):
  power: regulator: Only run autoset once for each regulator
  rockchip: Port IO-domain driver for RK3568 from linux

Joseph Chen (1):
  regulator: rk8xx: Return correct voltage for buck converters

 drivers/misc/Kconfig                       |   9 ++
 drivers/misc/Makefile                      |   1 +
 drivers/misc/rockchip-io-domain.c          | 157 +++++++++++++++++++++
 drivers/power/regulator/regulator-uclass.c |  18 ++-
 drivers/power/regulator/rk8xx.c            |  98 ++++++++-----
 include/power/regulator.h                  |   1 +
 6 files changed, 242 insertions(+), 42 deletions(-)
 create mode 100644 drivers/misc/rockchip-io-domain.c

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2.41.0