linux-kernel - Re: [PATCH 2/2] ARM: dts: aspeed: add asrock x470d4u bmc

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Message-ID: <20250922200738.GA1124791-robh@kernel.org>
Date: Mon, 22 Sep 2025 15:07:38 -0500
From: Rob Herring <robh@...nel.org>
To: Tan Siewert <tan@...wert.io>
Cc: Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Joel Stanley <joel@....id.au>,
	Andrew Jeffery <andrew@...econstruct.com.au>,
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-aspeed@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] ARM: dts: aspeed: add asrock x470d4u bmc

On Fri, Sep 19, 2025 at 08:56:18PM +0200, Tan Siewert wrote:
> The ASRock Rack X470D4U X470D4U is a single-socket X470-based microATX
> motherboard for Ryzen processors with an AST2500 BMC and either 32MB or
> 64MB SPI flash.
> 
> This mainboard exists in three known "flavors" which only differ in the
> used host NIC, the BMC SPI size and some parts that may be un-populated.
> 
> To keep the complexity low with the BMC SPI, use the 32MB layout
> regardless of the used SPI or mainboard flavor.
> 
> Signed-off-by: Tan Siewert <tan@...wert.io>
> ---
>  arch/arm/boot/dts/aspeed/Makefile             |   1 +
>  .../dts/aspeed/aspeed-bmc-asrock-x470d4u.dts  | 345 ++++++++++++++++++
>  2 files changed, 346 insertions(+)
>  create mode 100644 arch/arm/boot/dts/aspeed/aspeed-bmc-asrock-x470d4u.dts
> 
> diff --git a/arch/arm/boot/dts/aspeed/Makefile b/arch/arm/boot/dts/aspeed/Makefile
> index aba7451ab749..fae97b5183e5 100644
> --- a/arch/arm/boot/dts/aspeed/Makefile
> +++ b/arch/arm/boot/dts/aspeed/Makefile
> @@ -13,6 +13,7 @@ dtb-$(CONFIG_ARCH_ASPEED) += \
>  	aspeed-bmc-asrock-e3c256d4i.dtb \
>  	aspeed-bmc-asrock-romed8hm3.dtb \
>  	aspeed-bmc-asrock-spc621d8hm3.dtb \
> +	aspeed-bmc-asrock-x470d4u.dtb \
>  	aspeed-bmc-asrock-x570d4u.dtb \
>  	aspeed-bmc-asus-x4tf.dtb \
>  	aspeed-bmc-bytedance-g220a.dtb \
> diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-asrock-x470d4u.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-asrock-x470d4u.dts
> new file mode 100644
> index 000000000000..bae2b521f708
> --- /dev/null
> +++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-asrock-x470d4u.dts
> @@ -0,0 +1,345 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/dts-v1/;
> +
> +#include "aspeed-g5.dtsi"
> +#include <dt-bindings/gpio/aspeed-gpio.h>
> +#include <dt-bindings/leds/common.h>
> +#include <dt-bindings/interrupt-controller/irq.h>
> +
> +/ {
> +	model = "Asrock Rack X470D4U-series BMC";
> +	compatible = "asrock,x470d4u-bmc", "aspeed,ast2500";
> +
> +	aliases {
> +		serial4 = &uart5;
> +	};
> +
> +	chosen {
> +		stdout-path = &uart5;
> +	};
> +
> +	iio-hwmon {
> +		compatible = "iio-hwmon";
> +		io-channels = <&adc 0>, <&adc 1>, <&adc 2>, <&adc 3>, <&adc 4>,
> +			<&adc 5>, <&adc 6>, <&adc 7>, <&adc 8>, <&adc 9>,
> +			<&adc 10>, <&adc 11>, <&adc 12>;
> +	};
> +
> +	leds {
> +		compatible = "gpio-leds";
> +
> +		heartbeat {

led-0

This should have given you a warning. You did run "make dtbs_check" 
check the warnings, right?

Use "function" to define the function.

> +			/* led-heartbeat-n */
> +			gpios = <&gpio ASPEED_GPIO(H, 6) GPIO_ACTIVE_LOW>;
> +			linux,default-trigger = "timer";
> +		};
> +
> +		systemfault {

led-1

> +			/* led-fault-n */
> +			gpios = <&gpio ASPEED_GPIO(Z, 2) GPIO_ACTIVE_LOW>;
> +			panic-indicator;
> +		};
> +
> +		identify {

led-2

> +			/* led-identify-n */
> +			gpios = <&gpio ASPEED_GPIO(D, 6) GPIO_ACTIVE_LOW>;
> +		};
> +	};
> +