[PATCH v3 0/8] arm64: Add Axiado AX3005 SoC and EVK support

This series adds initial device tree support for the Axiado AX3005 SoC
and its evaluation board (EVK).

The AX3005 uses Cadence-derived UART/I2C/I3C/GPIO and Synopsys
DesignWare SPI IP blocks. These are already described by 
existing bindings, so the device tree reuses the "axiado,ax3000-*",
"cdns,*" and "snps,*" compatible strings; only a new SoC/board 
level compatible is added.

Patch 1 adds the AX3005 board/SoC compatible strings to the Axiado
platform binding.
Patch 2 adds the AX3005 SoC dtsi, the EVK board dts, and the Makefile
entry. The EVK enables the CPUs, timer, GPIO, UART, I2C, I3C, SPI and
USB controllers.

Validated with:
- make CHECK_DTBS=y axiado/ax3005-evk.dtb
- make dt_binding_check DT_SCHEMA_FILES=axiado.yaml
- boot-tested on the AX3005 EVK (to init CLI via ramfs)

Signed-off-by: Swark Yang <[email protected]>
---
Changes in v3:
- Added SoC-specific compatibles (e.g., axiado,ax3005-gpio) with appropriate
  fallbacks to all IP blocks (UART, I3C, I2C, SPI, USB, GPIO).
- Added corresponding dt-bindings patches for all updated IPs.
- Renamed l2-cache0 node to l2-cache to drop the unnecessary unit address.
- Fixed DT node sorting.
- Link to v2: https://lore.kernel.org/r/20260705-upstream-axiado-ax3005-upstream-v2-0-2dfbd1448f81@axiado.com

Changes in v2:
- Confirmed with internal team that AX3005 BootROM multiplexes the
  single release address for SMP bring-up.
- Corrected architectural timer PPIs and VGIC maintenance interrupt
  polarity to active-low.
- Aligned memory node unit-address with reg base address
  (@81000000).
- Removed 'arm,cpu-registers-not-fw-configured' property from the
  timer node.
- Collected Conor Dooley's Acked-by for the dt-binding patch.
- Link to v1: https://lore.kernel.org/r/20260624-upstream-axiado-ax3005-upstream-v1-0-c05bd0bc9124@axiado.com

---
Swark Yang (8):
      dt-bindings: arm: axiado: add AX3005 EVK
      dt-bindings: gpio: cdns: add Axiado AX3005 GPIO variant
      dt-bindings: i2c: cdns: add Axiado AX3005 I2C variant
      dt-bindings: i3c: cdns: add Axiado AX3005 I3C variant
      dt-bindings: serial: cdns: add Axiado AX3005 UART variant
      dt-bindings: spi: dw-apb-ssi: add Axiado AX3005 SPI variant
      dt-bindings: usb: generic-xhci: add Axiado AX3005 xHCI variant
      arm64: dts: axiado: Add initial support for AX3005 SoC and eval board

 Documentation/devicetree/bindings/arm/axiado.yaml  |   6 +
 .../devicetree/bindings/gpio/cdns,gpio.yaml        |   7 +-
 .../devicetree/bindings/i2c/cdns,i2c-r1p10.yaml    |  10 +-
 .../devicetree/bindings/i3c/cdns,i3c-master.yaml   |   1 +
 .../devicetree/bindings/serial/cdns,uart.yaml      |   1 +
 .../devicetree/bindings/spi/snps,dw-apb-ssi.yaml   |   4 +
 .../devicetree/bindings/usb/generic-xhci.yaml      |   4 +
 arch/arm64/boot/dts/axiado/Makefile                |   1 +
 arch/arm64/boot/dts/axiado/ax3005-evk.dts          | 327 ++++++++
 arch/arm64/boot/dts/axiado/ax3005.dtsi             | 842 +++++++++++++++++++++
 10 files changed, 1198 insertions(+), 5 deletions(-)
---
base-commit: 2b414a95b8f7307d42173ba9e580d6d3e2bcbfce
change-id: 20260617-upstream-axiado-ax3005-upstream-bb09780a2fdf

Best regards,
-- 
Swark Yang <[email protected]>