[PATCH v3 0/2] arm64: dts: agilex5: add support for debug daughter card

[Adrian Ng Ho Yin <adrian.ho.yin.ng@altera.com>]

The Agilex5 SoCDK supports an optional debug daughter card that requires
a dedicated device tree variant due to differences in peripheral
connectivity compared to the standard SoCDK configuration.

When the debug daughter card is fitted:
  - gpio0 is unrouted and remains disabled; HPS LED is on gpio1 (portb)
  - gmac2 is replaced by gmac0 for Ethernet connectivity
  - spi0 is connected to a Microchip 25AA128 16 KByte SPI EEPROM

The board compatible (intel,socfpga-agilex5-socdk-debug) is already
present in altera.yaml and is not part of this series.

---
changelog:
v2->v3:
- Remap HPS LED to &portb 12 (gpio1): gpio0 is unrouted, so keeping
  &porta would leave leds-gpio in perpetual probe deferral
- Retain spi0 dmas/dma-names from the SoC DTSI; do not delete them to
  work around a software/defconfig issue (DT should describe hardware)
- Add microchip,25aa128 to the at25 binding and use
  "microchip,25aa128", "atmel,at25" for the EEPROM node
- Drop the altera.yaml compatible patch (already accepted/applied)
- Use &usb31 to match the current Agilex5 SoCDK USB topology

v1->v2:
- Use socfpga_agilex5.dtsi as the base include instead of
  socfpga_agilex5_socdk.dts to follow the convention that .dts files
  are final compilation units and should not be included by other files
- Replace spidev node (with fake rohm,dh2228fv compatible) with a
  proper atmel,at25 EEPROM binding describing the actual hardware
- Remove dmas/dma-names from spi0: CONFIG_DW_AXI_DMAC is not enabled
  in the platform defconfig and retaining them stalls the SPI driver
  in probe deferral
- Remove incorrect HPS LED GPIO override; the LED mapping is unchanged
  from the base board
---

Adrian Ng Ho Yin (2):
  dt-bindings: eeprom: at25: add Microchip 25AA128
  arm64: dts: agilex5: add support for debug daughter card

 .../devicetree/bindings/eeprom/at25.yaml      |   1 +
 arch/arm64/boot/dts/intel/Makefile            |   1 +
 .../dts/intel/socfpga_agilex5_socdk_debug.dts | 121 ++++++++++++++++++
 3 files changed, 123 insertions(+)
 create mode 100644 arch/arm64/boot/dts/intel/socfpga_agilex5_socdk_debug.dts

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