[PATCH v2 00/21] Add USB2.0 support for RZ/G3E

[Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>]

Dear All,

This patch series adds USB2.0 support for the Renesas R9A09G047 SoC and
enables it on the RZ/G3E SMARK II board. RZ/G3E has USB2.0 IP that is
identical to the one's found into the RZ/V2H SoC (R9A09G057).

This series apply on top of [1] + [2].

Thanks & Regards,
Tommaso

[1] https://patchwork.kernel.org/project/linux-renesas-soc/list/?series=1015037
[2] https://patchwork.kernel.org/project/linux-renesas-soc/patch/20250912130911.185674-1-tommaso.merciai.xr@bp.renesas.com/

v1->v2:
 - Rebased on top of next-20251103 + [1] + [2]
 - Reworked series to use mux-state for controlling VBUS_SEL
   as suggested by PZabel added also mux bindings documentation
   on phy and rst side.
 - Collected Conor Dooley tags
 - Dropped unnecessary rzv2h_usbphy_assert_helper() function from
   rzv2h_usb2phy_reset_probe()

Tommaso Merciai (21):
  phy: renesas: rcar-gen3-usb2: Use devm_pm_runtime_enable()
  phy: renesas: rcar-gen3-usb2: Factor out VBUS control logic
  reset: rzv2h-usb2phy: Keep PHY clock enabled for entire device
    lifetime
  dt-bindings: reset: renesas,rzv2h-usb2phy: Add '#mux-state-cells'
    property
  mux: Add driver for Renesas RZ/V2H USB VBUS_SEL mux
  reset: rzv2h-usb2phy: Add support for VBUS mux controller registration
  dt-bindings: phy: renesas,usb2-phy: Document USB VBUS regulator
  dt-bindings: phy: renesas,usb2-phy: Document mux-states property
  phy: renesas: rcar-gen3-usb2: Add regulator for OTG VBUS control
  phy: renesas: rcar-gen3-usb2: Use mux-state for phyrst management
  dt-bindings: usb: renesas,usbhs: Add RZ/G3E SoC support
  dt-bindings: phy: renesas,usb2-phy: Document RZ/G3E SoC
  dt-bindings: reset: Document RZ/G3E USB2PHY reset
  arm64: dts: renesas: r9a09g057: Add USB2.0 VBUS_SEL mux-controller
    support
  arm64: dts: renesas: r9a09g056: Add USB2.0 VBUS_SEL mux-controller
    support
  arm64: dts: renesas: r9a09g056: Add USB2.0 PHY VBUS internal regulator
    node
  arm64: dts: renesas: r9a09g056n48-rzv2n-evk: Enable USB2 PHY0 VBUS
    support
  arm64: dts: renesas: r9a09g057: Add USB2.0 PHY VBUS internal regulator
    node
  arm64: dts: renesas: r9a09g057h44-rzv2h-evk: Enable USB2 PHY0 VBUS
    support
  arm64: dts: renesas: r9a09g047: Add USB2.0 support
  arm64: dts: renesas: r9a09g047e57-smarc: Enable USB2.0 support

 .../bindings/phy/renesas,usb2-phy.yaml        |  16 +-
 .../reset/renesas,rzv2h-usb2phy-reset.yaml    |   9 +-
 .../bindings/usb/renesas,usbhs.yaml           |   1 +
 arch/arm64/boot/dts/renesas/r9a09g047.dtsi    | 125 +++++++++
 .../boot/dts/renesas/r9a09g047e57-smarc.dts   |  49 ++++
 arch/arm64/boot/dts/renesas/r9a09g056.dtsi    |   7 +
 .../dts/renesas/r9a09g056n48-rzv2n-evk.dts    |   5 +
 arch/arm64/boot/dts/renesas/r9a09g057.dtsi    |   9 +
 .../dts/renesas/r9a09g057h44-rzv2h-evk.dts    |   5 +
 .../boot/dts/renesas/renesas-smarc2.dtsi      |  23 ++
 drivers/mux/Kconfig                           |  10 +
 drivers/mux/Makefile                          |   2 +
 drivers/mux/rzv2h-usb-vbus.c                  |  97 +++++++
 drivers/phy/renesas/phy-rcar-gen3-usb2.c      | 263 ++++++++++++++----
 drivers/reset/Kconfig                         |   1 +
 drivers/reset/reset-rzv2h-usb2phy.c           | 129 ++++++---
 include/linux/reset/reset_rzv2h_usb2phy.h     |  15 +
 17 files changed, 669 insertions(+), 97 deletions(-)
 create mode 100644 drivers/mux/rzv2h-usb-vbus.c
 create mode 100644 include/linux/reset/reset_rzv2h_usb2phy.h

-- 
2.43.0