[PATCH v4 0/7] arm64: dts: renesas: Add various SolidRun RZ/G2 based boards

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

Add support for a variety of SolidRun RZ/G2 based SoMs and the
HummingBoard IIoT Evaluation board.

Bindings are added for all SolidRun RZ/G2 SoMs:

- RZ/G2L SYSTEM ON MODULE
  https://www.solid-run.com/embedded-industrial-iot/renesas-rz-family/rz-g2l-som/
- RZ/V2L SYSTEM ON MODULE
  https://www.solid-run.com/embedded-industrial-iot/renesas-rz-family/rz-v2l-som/
- RZ/G2LC SYSTEM ON MODULE
  https://www.solid-run.com/embedded-industrial-iot/renesas-rz-family/rz-g2lc-som/
- RZ/G2UL SYSTEM ON MODULE
  https://www.solid-run.com/embedded-industrial-iot/renesas-rz-family/rz-g2ul-som/

And each supported carrier board:

- HUMMINGBOARD RZ/G2L IIOT
  https://www.solid-run.com/embedded-industrial-iot/renesas-rz-family/hummingboard-rz-series-sbcs/hummingboard-rz-g2l-iot-sbc/
- HUMMINGBOARD RZ/G2L PRO
  https://www.solid-run.com/embedded-industrial-iot/renesas-rz-family/hummingboard-rz-series-sbcs/hummingboard-rz-g2l-sbc/
- HUMMINGBOARD RZ/G2LC BASE (Ripple)
  https://www.solid-run.com/embedded-industrial-iot/renesas-rz-family/hummingboard-rz-series-sbcs/hummingboard-rz-g2lc-base/

Device-tree are only added for the first board to reduce initial effort.

Signed-off-by: Josua Mayer <josua@solid-run.com>
---
Changes in v7:
- rebased and tested on v7.3-rc1
- updated explanation for edge-triggered interrupt between SoC and gpio
  expander.
- set interrupt for ethernet phys to falling-edge because SoC does not
  support level interrupts on its gpios, only on dedicated irq pins.
- Fixed sd data4-7 pinconf nodes trying to avoid cross 1.8V/3.3V domain
  conflicts when data0-3 are muxed to SD and 4-7 still hard-wired to
  eMMC. RZ/G2 family does not support bias-disable property, and
  power-source property applies to all pins of SD0 as a group.
  Instead added input-disable as the only feasible measure on
  fixed-function pins.
- Update dt-binding for rzg2l pinctrl to allow setting input-disable
  property.

Changes in v6:
- Drop currently unused usb-vbus pinctrl nodes from som dtsi, reported
  by sashiko.
- Fix duplicate pin config mistakes in split dat0-3/dat4-7, reported by
  sashiko.
- Link to v5: https://patch.msgid.link/20260809-rzg2-sr-boards-v5-0-19c662358e36@solid-run.com

Changes in v5:
- Clarified sdhi mux dt comment on mux and gpio states.
- Added microsd & emmc dtbos to Makefile targets explicitly for V2L SoC
  too. Reported by Sashiko.
- split 8-bit and 4-bit sdhi pinctrl to avoid theoretical overvoltage on
  hardwired eMMC DAT4-7 pins. Reported by sashiko.
- Moved dr_mode from usb phy to controller. Reported by sashiko.
- Collected acks.
- Link to v4: https://patch.msgid.link/20260730-rzg2-sr-boards-v4-0-08bc459578dc@solid-run.com

Changes in v4:
- Rebased on v7.2-rc1.
- Addresed sashiko comments for g2l som & hb-iiot:
  gpio dt property -> plural, irq levels, memory size, usb-3.0 hub.
  The usb hub ids however are correct, 6502 and 6506 are usb-2.0.
- Addressed sashiko comments for g2lc som & hb-iiot:
  gpio dt property -> plural, vmmc gpio polarity.
- Link to v3: https://patch.msgid.link/20260512-rzg2-sr-boards-v3-0-f033fc96c906@solid-run.com

Changes in v3:
- Added explanatory comments on won't-fix sashiko findings.
- Added cap-sdio-irq to sdhi controllers used for WiFi.
- Drop redundant addition of common device-tree overlays to install
  targets of G2L(C) SoC.
- Add common device-tree overlays to install targets of both G2L and V2L
  SoCs.
- Assign kbuild composie variables with := operator.
- Link to v2: https://lore.kernel.org/r/20260511-rzg2-sr-boards-v2-0-82aebbd27891@solid-run.com

Changes in v2:
- Added relevant product page links to each commit description.
- Added product page links to cover letter, thanks Geert.
- Link to v1: https://lore.kernel.org/r/20260503-rzg2-sr-boards-v1-0-8545677f93ca@solid-run.com

---
Josua Mayer (7):
      dt-bindings: soc: renesas: Add various SolidRun RZ/G2 based boards
      dt-bindings: pinctrl: renesas,rzg2l-pinctrl: Allow input-enable pinconf
      dt-bindings: usb: cypress,hx3: make peer-hub property optional
      arm64: dts: renesas: add support for solidrun rzg2l som and hb-iiot evb
      arm64: dts: renesas: add support for solidrun rzv2l som and hb-iiot evb
      arm64: dts: renesas: add support for solidrun rzg2lc som and hb-iiot evb
      arm64: dts: renesas: rzg2l(c)/rzv2l hb-iiot: add dsi panel dt overlay

 .../bindings/pinctrl/renesas,rzg2l-pinctrl.yaml    |   1 +
 .../devicetree/bindings/soc/renesas/renesas.yaml   |  37 ++
 .../devicetree/bindings/usb/cypress,hx3.yaml       |   1 -
 arch/arm64/boot/dts/renesas/Makefile               |  43 ++
 .../dts/renesas/r9a07g044c2-hummingboard-iiot.dts  |  20 +
 .../dts/renesas/r9a07g044l2-hummingboard-iiot.dts  |  16 +
 .../dts/renesas/r9a07g054l2-hummingboard-iiot.dts  |  16 +
 .../renesas/rzg2l-hummingboard-iiot-common.dtsi    | 564 +++++++++++++++++++++
 .../renesas/rzg2l-hummingboard-iiot-microsd.dtso   |  26 +
 ...hummingboard-iiot-panel-dsi-WJ70N3TYJHMNG0.dtso |  74 +++
 .../renesas/rzg2l-hummingboard-iiot-rs485-a.dtso   |  17 +
 .../renesas/rzg2l-hummingboard-iiot-rs485-b.dtso   |  17 +
 .../boot/dts/renesas/rzg2l-hummingboard-iiot.dtsi  |  49 ++
 arch/arm64/boot/dts/renesas/rzg2l-sr-som-emmc.dtso |  44 ++
 arch/arm64/boot/dts/renesas/rzg2l-sr-som.dtsi      | 460 +++++++++++++++++
 arch/arm64/boot/dts/renesas/rzg2lc-sr-som.dtsi     | 416 +++++++++++++++
 16 files changed, 1800 insertions(+), 1 deletion(-)
---
base-commit: cee9395acd8043be0644b25c34bfa86623f2b935
change-id: 20260502-rzg2-sr-boards-37d556668a2d

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