[PATCH v5 0/6] Support RK3528 variant of Rockchip naneng-combphy

[Yao Zi]

Rockchip RK3528 ships a naneng-combphy that operates in either PCIe or
USB 3.0 mode. It has a similar control logic to previous generations of
naneng-combphy but an apparently different register layout.

This series prepares phy-rockchip-naneng-combphy.c for variants with a
different register layout and add RK3528 support.

Testing is done on both Radxa E20C and Radxa Rock 2A with downstream           devicetree changes, both USB 3 and PCIe modes are verified with mainline
driver, and reach a reasonable speed.

This series depends on patch "phy: rockchip: naneng-combphy: Enable U3
OTG port for RK3568"[1], and the dts patch depends on v2 of patch
"arm64: dts: rockchip: convert rk3528 power-domains to dt-binding
constants"[2] to build.

[1]: https://lore.kernel.org/all/20250723072324.2246498-1-jonas@kwiboo.se/
[2]: https://lore.kernel.org/all/20250620201715.1572609-1-heiko@sntech.de/

Changed from v4
- Collect review tags
- Add extra handling of USB3OTG_CON1 when operating in USB3 mode
- Link to v4: https://lore.kernel.org/all/20250624033733.50197-1-ziyao@disroot.org/
Changed from v3
- Add a dt-binding patch to allow power-domains property when describing
  Rockchip naneng combphys
- devicetree patch
  - Break down long lines
  - Sort properties to keep the style consistent
  - Add power-domains property to the combphy node
- Link to v3: https://lore.kernel.org/linux-rockchip/20250519161612.14261-1-ziyao@disroot.org/
Changed from v2
- phy binding patch
  - Fix format issue
  - drop review tags
- Link to v2: https://lore.kernel.org/all/20250509004121.36058-2-ziyao@disroot.
org/
Changed from v1
- Collect review tags
- Restyle RK3528 register definitions in the combphy driver
- Drop unused include of phy.h in SoC devicetree
- Link to v1: https://lore.kernel.org/all/20250508134332.14668-2-ziyao@disroo
t.org/

Yao Zi (6):
  dt-bindings: soc: rockchip: Add RK3528 pipe-phy GRF syscon
  dt-bindings: phy: rockchip: naneng-combphy: Add power-domains property
  dt-bindings: phy: rockchip: naneng-combphy: Add RK3528 variant
  phy: rockchip: naneng-combphy: Add SoC prefix to register definitions
  phy: rockchip: naneng-combphy: Add RK3528 support
  arm64: dts: rockchip: Add naneng-combphy for RK3528

 .../phy/phy-rockchip-naneng-combphy.yaml      |   8 +-
 .../devicetree/bindings/soc/rockchip/grf.yaml |   1 +
 arch/arm64/boot/dts/rockchip/rk3528.dtsi      |  24 +
 .../rockchip/phy-rockchip-naneng-combphy.c    | 749 +++++++++++-------
 4 files changed, 508 insertions(+), 274 deletions(-)

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2.50.1