[PATCH RFC v3 0/6] phy: mvebu-cp110-utmi: add support for armada-380 utmi phys

[Josua Mayer <josua@solid-run.com>]

Armada 380 has smilar USB-2.0 PHYs as CP-110 (Armada 8K).
    
Add support for Armada 380 to cp110 utmi phy driver, and enable it for
armada-388-clearfog boards.

Additionally add a small bugfix for armada-388 clearfog:
Enable Clearfog Base M.2 connector for cellular modems with USB-2.0/3.0
interface.
This is not separated out to avoid future merge conflicts.

Signed-off-by: Josua Mayer <josua@solid-run.com>
---
Changes in v3:
- updated bindings with additional comments, tested with dtbs_check:
  used anyOf for the newly-added optional regs
- added fix for clearfog base m.2 connector / enable third usb
- dropped unnecessary syscon node using invalid compatible
  (Reported-by: Krzysztof Kozlowski <krzk@kernel.org>)
- Link to v2: https://lore.kernel.org/r/20240716-a38x-utmi-phy-v2-0-dae3a9c6ca3e@solid-run.com

Changes in v2:
- add support for optional regs / make syscon use optional
- add device-tree changes for armada-388-clearfog
- attempted to fix warning reported by krobot (untested)
- tested on actual hardware
- drafted dt-bindings
- Link to v1: https://lore.kernel.org/r/20240715-a38x-utmi-phy-v1-0-d57250f53cf2@solid-run.com

---
Josua Mayer (6):
      arm: dts: marvell: armada-388-clearfog: enable third usb on m.2/mpcie
      arm: dts: marvell: armada-388-clearfog-base: add rfkill for m.2
      dt-bindings: phy: cp110-utmi-phy: add compatible string for armada-38x
      arm: dts: marvell: armada-38x: add description for usb phys
      phy: mvebu-cp110-utmi: add support for armada-380 utmi phys
      arm: dts: marvell: armada-388-clearfog: add description for usb phys

 .../phy/marvell,armada-cp110-utmi-phy.yaml         |  34 +++-
 .../boot/dts/marvell/armada-388-clearfog-base.dts  |  41 ++++
 arch/arm/boot/dts/marvell/armada-388-clearfog.dts  |   8 +
 arch/arm/boot/dts/marvell/armada-388-clearfog.dtsi |  30 ++-
 arch/arm/boot/dts/marvell/armada-38x.dtsi          |  24 +++
 drivers/phy/marvell/phy-mvebu-cp110-utmi.c         | 209 ++++++++++++++++-----
 6 files changed, 288 insertions(+), 58 deletions(-)
---
base-commit: 1613e604df0cd359cf2a7fbd9be7a0bcfacfabd0
change-id: 20240715-a38x-utmi-phy-02e8059afe35

Sincerely,
-- 
Josua Mayer <josua@solid-run.com>