[v2,0/3] Allwinner D1 power domain support

Message

Samuel Holland Jan. 26, 2023, 6:34 a.m. UTC

This series adds support for the power controller found in D1 and other
recent Allwinner SoCs. There is no first-party documentation, but there
are a couple of vendor drivers for different hardware revisions[1][2],
and the register definitions were easy to verify empirically.

I have tested this driver on D1 with the video engine.

[1]: https://github.com/mangopi-sbc/tina-linux-5.4/blob/main/drivers/soc/sunxi/gpu_domain.c
[2]: https://github.com/mangopi-sbc/tina-linux-5.4/blob/main/drivers/soc/sunxi/pm_domains.c

Changes in v2:
 - Removed quotes from "PPU"
 - Fixed indentation in binding example
 - Removed possibly misleading comment from the Kconfig description
 - Include a patch adding the device tree node

Samuel Holland (3):
  dt-bindings: power: Add Allwinner D1 PPU
  soc: sunxi: Add Allwinner D1 PPU driver
  riscv: dts: allwinner: d1: Add power controller node

 .../power/allwinner,sun20i-d1-ppu.yaml        |  54 +++++
 .../boot/dts/allwinner/sunxi-d1s-t113.dtsi    |   8 +
 drivers/soc/sunxi/Kconfig                     |   8 +
 drivers/soc/sunxi/Makefile                    |   1 +
 drivers/soc/sunxi/sun20i-ppu.c                | 207 ++++++++++++++++++
 .../power/allwinner,sun20i-d1-ppu.h           |  10 +
 6 files changed, 288 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/power/allwinner,sun20i-d1-ppu.yaml
 create mode 100644 drivers/soc/sunxi/sun20i-ppu.c
 create mode 100644 include/dt-bindings/power/allwinner,sun20i-d1-ppu.h