Add support for the ASRock Rack B650D4U BMC, based on the ASPEED AST2600 SoC.

The series adds the board compatible string and describes the BMC memory, SPI NOR flash layout, UART console, GPIO line names, graphics reserved memory, I2C EEPROM, and MAC0 connected to an RTL8211F Ethernet PHY.

MAC0 obtains its MAC address from the EEPROM on I2C7 and uses RGMII-ID mode.

Changes in v7:

* Correct the GPIOP bank line names for the reset, power and NMI button/control signals according to the confirmed board mapping.
* Remove the obsolete GPIOF5 reset-button line name.
* Leave the binding patch unchanged.

The B650D4U DTB builds successfully using aspeed_g5_defconfig.

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  | 135 ++++++++++++++++++
 3 files changed, 137 insertions(+)
 create mode 100644 arch/arm/boot/dts/aspeed/aspeed-bmc-asrock-b650d4u.dts

-- 
2.47.3

On 9/22/26 2:34 PM, Prasanth Kumar Padarthi wrote:
> Add support for the ASRock Rack B650D4U BMC, based on the ASPEED AST2600 SoC.
> 
> The series adds the board compatible string and describes the BMC memory, SPI NOR flash layout, UART console, GPIO line names, graphics reserved memory, I2C EEPROM, and MAC0 connected to an RTL8211F Ethernet PHY.
> 
> MAC0 obtains its MAC address from the EEPROM on I2C7 and uses RGMII-ID mode.
> 
> Changes in v7:
> 
> * Correct the GPIOP bank line names for the reset, power and NMI button/control signals according to the confirmed board mapping.
> * Remove the obsolete GPIOF5 reset-button line name.
> * Leave the binding patch unchanged.
> 
> The B650D4U DTB builds successfully using aspeed_g5_defconfig.

What? The B650D4U has an AST2600, so using `aspeed_g5_defconfig` means 
you're using a config set for the AST2*5*00...

Also, please preserve the trailers from previous serieses (i.e. Andrew's 
Reviewed-by trailer) if you don't change anything significantly for the 
parts that got reviewed.

Tan

Hi Tan,

Thank you for catching these issues.

You're correct about the defconfig. I used `aspeed_g5_defconfig` for
the DTB build and incorrectly reported it as validation for the
AST2600. I'll rebuild using the appropriate AST2600 configuration and
correct the statement in the next revision.

I'll also carry forward Andrew's Reviewed-by trailer for the unchanged
MAC0 and MDIO nodes, preserving the scope of his review.

Thanks,
Prasanth

On Tue, Sep 22, 2026 at 6:51 PM Tan Siewert <tan.siewert@9elements.com> wrote:
>
> On 9/22/26 2:34 PM, Prasanth Kumar Padarthi wrote:
> > Add support for the ASRock Rack B650D4U BMC, based on the ASPEED AST2600 SoC.
> >
> > The series adds the board compatible string and describes the BMC memory, SPI NOR flash layout, UART console, GPIO line names, graphics reserved memory, I2C EEPROM, and MAC0 connected to an RTL8211F Ethernet PHY.
> >
> > MAC0 obtains its MAC address from the EEPROM on I2C7 and uses RGMII-ID mode.
> >
> > Changes in v7:
> >
> > * Correct the GPIOP bank line names for the reset, power and NMI button/control signals according to the confirmed board mapping.
> > * Remove the obsolete GPIOF5 reset-button line name.
> > * Leave the binding patch unchanged.
> >
> > The B650D4U DTB builds successfully using aspeed_g5_defconfig.
>
> What? The B650D4U has an AST2600, so using `aspeed_g5_defconfig` means
> you're using a config set for the AST2*5*00...
>
> Also, please preserve the trailers from previous serieses (i.e. Andrew's
> Reviewed-by trailer) if you don't change anything significantly for the
> parts that got reviewed.
>
> Tan

On 9/22/26 3:26 PM, Prasanth wrote:
> Hi Tan,
> 
> Thank you for catching these issues.
> 
> You're correct about the defconfig. I used `aspeed_g5_defconfig` for
> the DTB build and incorrectly reported it as validation for the
> AST2600. I'll rebuild using the appropriate AST2600 configuration and
> correct the statement in the next revision.
> 
> I'll also carry forward Andrew's Reviewed-by trailer for the unchanged
> MAC0 and MDIO nodes, preserving the scope of his review.

Andrew has already resent the trailer, so no need to send another 
revision for that.

Tan