RK3588 USBDP support

Hi,

This adds Rockchip RK3588 USBDP PHY support, which is used for two of the three
USB3 controllers in the RK3588 (the third one uses a different PHY, which is
already supported). The USBDP PHY offers USB3 dual-role and DisplayPort. The
driver and bindings being upstreamed contains the DP parts, but only USB3 has
been tested by me (upstream does not yet have a DRM DP bridge driver for this
platform).

What has been tested:
 - USB3 Type A ports on Rock 5A, Rock 5B, EVB1
 - USB Type C port on EVB1 in Host mode

I did not yet include a patch to enable the Type-C from the Rock 5B, since that
requires enabling proper support for the fusb302. Since the system is usually
supplied via USB-C and without any battery backup, this easily results in
system reset when the power-delivery negotiation happens. As this issue is
independent from the USBDP PHY, I skipped enabling that port on Rock 5B for
now.

You can find a branch with these patches here:

https://gitlab.collabora.com/hardware-enablement/rockchip...

Changes since PATCHv2:
 * https://lore.kernel.org/all/20240213163609.44930-1-sebast...
 * Drop patch 1+2 (GRF DT bindings got merged by Heiko Stübner)
 * USBDP PHY DT binding: more spelling fixes
 * USBDP PHY DT binding: add Reviewed-by from Conor Dooley
 * USBDP PHY DT binding: specify 3 as maximum value for rockchip,dp-lane-mux items
 * all patches: remove child nodes for usb3-port and dp-port and use PHY cell instead
 * USBDP PHY driver: drop some header includes
 * USBDP PHY driver: rework rk_udphy_grfreg_write to use FIELD_PREP_CONST
 * USBDP PHY driver: add newline after break; in switch cases
 * USBDP PHY driver: make some functions void

Changes since PATCHv1:
 * https://lore.kernel.org/all/20240209181831.104687-1-sebas...
 * VO GRF DT binding: Collect Acked-by from Conor Dooley
 * USB3 syscon DT binding: Collect Acked-by from Conor Dooley
 * USBDP PHY DT binding: fix spelling
 * USBDP PHY DT binding: add maxItems: 1 to gpios
 * USBDP PHY driver: use rk_udphy_ prefix everywhere
 * USBDP PHY DT addition: fix nodenames and property order
 * USBDP PHY DT addition: fix position of the GRF nodes
 * add new patches fixing existing USB2 PHY nodenames/property order

Not changed:
 * rockchip,dp-lane-mux: Why "mux" and not "map"?
  - This is about muxing DP lanes vs USB3 lanes. I kept mux instead
    of map, since that's used downstream and there does not seem to
    be a good reason to diverge?

-- Sebastian

Sebastian Reichel (10):
  dt-bindings: phy: add rockchip usbdp combo phy document
  phy: rockchip: add usbdp combo phy driver
  arm64: defconfig: enable Rockchip Samsung USBDP PHY
  arm64: dts: rockchip: fix usb2phy nodename for rk3588
  arm64: dts: rockchip: reorder usb2phy properties for rk3588
  arm64: dts: rockchip: add USBDP phys on rk3588
  arm64: dts: rockchip: add USB3 DRD controllers on rk3588
  arm64: dts: rockchip: add USB3 to rk3588-evb1
  arm64: dts: rockchip: add upper USB3 port to rock-5a
  arm64: dts: rockchip: add lower USB3 port to rock-5b

 .../bindings/phy/phy-rockchip-usbdp.yaml      |  148 ++
 .../boot/dts/rockchip/rk3588-evb1-v10.dts     |  143 ++
 .../boot/dts/rockchip/rk3588-rock-5b.dts      |   17 +
 arch/arm64/boot/dts/rockchip/rk3588.dtsi      |   72 +
 .../boot/dts/rockchip/rk3588s-rock-5a.dts     |   18 +
 arch/arm64/boot/dts/rockchip/rk3588s.dtsi     |  105 +-
 arch/arm64/configs/defconfig                  |    1 +
 drivers/phy/rockchip/Kconfig                  |   12 +
 drivers/phy/rockchip/Makefile                 |    1 +
 drivers/phy/rockchip/phy-rockchip-usbdp.c     | 1612 +++++++++++++++++
 10 files changed, 2119 insertions(+), 10 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/phy/phy-rockchip-usbdp.yaml
 create mode 100644 drivers/phy/rockchip/phy-rockchip-usbdp.c

-- 
2.43.0