linux-kernel - Re: [PATCH v2 2/2] ARM: dts: aspeed: Minerva Harma: Add Facebook Minerva Harma (AST2600) BMC

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Date:   Wed, 22 Nov 2023 08:40:22 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Peter Yin <peteryin.openbmc@...il.com>, patrick@...cx.xyz,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Joel Stanley <joel@....id.au>,
        Andrew Jeffery <andrew@...id.au>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-aspeed@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/2] ARM: dts: aspeed: Minerva Harma: Add Facebook
 Minerva Harma (AST2600) BMC

On 22/11/2023 04:22, Peter Yin wrote:
> Add linux device tree entry related to
> Minerva Harma specific devices connected to BMC SoC.
> 
> Signed-off-by: Peter Yin <peteryin.openbmc@...il.com>
> ---
>  arch/arm/boot/dts/aspeed/Makefile             |   1 +
>  .../aspeed-bmc-facebook-minerva-harma.dts     | 533 ++++++++++++++++++
>  2 files changed, 534 insertions(+)
>  create mode 100644 arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-minerva-harma.dts
> 

...

> +
> +	iio-hwmon {
> +		compatible = "iio-hwmon";
> +		io-channels = <&adc0 0>, <&adc0 1>, <&adc0 2>, <&adc0 3>,
> +			<&adc0 4>, <&adc0 5>, <&adc0 6>, <&adc0 7>,
> +			<&adc1 2>;
> +	};
> +
> +	leds {
> +		compatible = "gpio-leds";
> +
> +		BMC_HEARTBEAT_N {

These are not proper names. Underscores and capital letters are not
allowed. Also - not tested.

It does not look like you tested the DTS against bindings. Please run
`make dtbs_check W=1` (see
Documentation/devicetree/bindings/writing-schema.rst or
https://www.linaro.org/blog/tips-and-tricks-for-validating-devicetree-sources-with-the-devicetree-schema/
for instructions).

> +			label = "bmc_heartbeat_n";

Drop, instead color and function.

> +			gpios = <&gpio0 ASPEED_GPIO(P, 7) GPIO_ACTIVE_LOW>;
> +			linux,default-trigger = "heartbeat";
> +		};
> +
> +		FM_ID_LED_N {
> +			label = "fm_id_led_n";

Color and function

> +			default-state = "off";
> +			gpios = <&gpio0 13 GPIO_ACTIVE_HIGH>;
> +		};
> +	};
> +};


Best regards,
Krzysztof