[PATCH 0/2] ARM: dts: aspeed: Add ASRock Rack B650D4U support

[Prasanth Kumar Padarthi]

This series adds initial device tree support for the ASRock Rack
B650D4U BMC, which is based on the ASPEED AST2600 SoC.

The B650D4U is a server motherboard for AMD Ryzen processors. Hardware
details were extracted via reverse engineering of vendor firmware.

Hardware features included:
 - UART5 Console
 - MAC0 (RGMII) for dedicated management LAN
 - I2C7 for FRU EEPROM
 - FMC/SPI 64MB Flash layout

Validation:
Logic has been verified against the AST2600 v1.5 datasheet. The DTS 
successfully compiles and was tested using QEMU (ast2600-evb) to verify 
serial console output and board identification. 

QEMU Boot Log Snippet:
---
[    0.000000] OF: fdt: Machine model: ASRock Rack B650D4U BMC
[    1.085143] 1e784000.serial: ttyS4 at MMIO 0x1e784000 (irq = 31) is a 16550A
[    1.090566] printk: legacy console [ttyS4] enabled
---

Full logs and reverse-engineering data are maintained at:
https://github.com/prasanthp20/asrock-b650d4u-bmc-support/blob/main/qemu-boot.log

Prasanth Kumar Padarthi (2):
  dt-bindings: arm: aspeed: Add ASRock Rack B650D4U
  ARM: dts: aspeed: Add ASRock Rack B650D4U BMC

 .../bindings/arm/aspeed/aspeed.yaml           |  1 +
 arch/arm/boot/dts/aspeed/Makefile             |  1 +
 .../dts/aspeed/aspeed-bmc-asrock-b650d4u.dts  | 61 +++++++++++++++++++
 3 files changed, 63 insertions(+)
 create mode 100644 arch/arm/boot/dts/aspeed/aspeed-bmc-asrock-b650d4u.dts

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2.47.3