[PATCH v3 0/2] ARM: dts: aspeed: ASRock Rack X470D4U BMC support

[Tan Siewert <tan@siewert.io>]

This series adds support for the BMC of the ASRock Rack X470D4U mainboard,
which uses an ASPEED AST2500.

The mainboard exists in three known flavors, the "normal" X470D4U, the
X470D4U2-2T (with 2x10G RJ45) and the X470D4U2/1N1 (an ODM version with
2x1G RJ45 that is now available in retail). The 1N1 version also has a 64MB
BMC SPI by default, but they are all swappable.

There are two device trees, one that has all the config and uses a 32MB
flash layout, and another one called "data64" (similar to facebook-fuji)
that uses the 64MB flash layout.

Please note that this board has been fully reverse-engineered.

Thanks,
Tan

Signed-off-by: Tan Siewert <tan@siewert.io>
---
Changes in v3:
- remove mdio pinctrl from mac1 nc-si interface [Andrew Jeffrey]
- remove "st,24c128" compatibility from fru eeprom [Tan]
- enable uart1-4 [Tan]
- add a data64 tree as alternative for boards with a 64M SPI [Zev]
- add hog to bmc-ready GPIO pin as required by the host BIOS [Tan]
- fix offenses reported by scripts/dtc/dt-check-style --mode strict [Tan]
- Link to v2: https://lore.kernel.org/all/20251011112124.17588-1-tan@siewert.io/

Changes in v2:
- fix led node names [robh]
- fix missing gfx memory region and other fixable dtbs_check issues [Tan]
- Link to v1: https://lore.kernel.org/all/20250919185621.6647-1-tan@siewert.io/

To: Rob Herring <robh@kernel.org>
To: Krzysztof Kozlowski <krzk+dt@kernel.org>
To: Conor Dooley <conor+dt@kernel.org>
To: Joel Stanley <joel@jms.id.au>
To: Andrew Jeffery <andrew@codeconstruct.com.au>
Cc: Zev Weiss <zev@bewilderbeest.net>
Cc: devicetree@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-aspeed@lists.ozlabs.org
Cc: linux-kernel@vger.kernel.org

---
Tan Siewert (2):
      dt-bindings: arm: aspeed: add ASRock X470D4U BMC
      ARM: dts: aspeed: add asrock x470d4u bmc

 .../devicetree/bindings/arm/aspeed/aspeed.yaml     |   2 +
 arch/arm/boot/dts/aspeed/Makefile                  |   2 +
 .../aspeed/aspeed-bmc-asrock-x470d4u-data64.dts    |  15 +
 .../boot/dts/aspeed/aspeed-bmc-asrock-x470d4u.dts  | 381 +++++++++++++++++++++
 4 files changed, 400 insertions(+)
---
base-commit: 749c34389679f8d56cb200a69b62f9a64670034f
change-id: 20251017-ts-x470d4u-54b9e98e4333

Best regards,
--  
Tan Siewert <tan@siewert.io>