linux-kernel - Re: [PATCH] ARM: dts: aspeed: mtmitchell: Enable NCSI

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Date:   Fri, 17 Feb 2023 12:32:36 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Chanh Nguyen <chanh@...amperecomputing.com>,
        OpenBMC Maillist <openbmc@...ts.ozlabs.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.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] ARM: dts: aspeed: mtmitchell: Enable NCSI

On 17/02/2023 11:21, Chanh Nguyen wrote:
> Support the mac3 (RGMII4) as an NC-SI stack instead of an MDIO PHY.
> 
> The OCP slot #0 and OCP slot #1 use a common the BMC_NCSI signal,
> so we use only one of them at the same time. The OCP slot #0 will
> be enabled by PCA9539's setting by default.
> 
> Also, enable the OCP Auxiliary Power during booting.
> 
> Signed-off-by: Chanh Nguyen <chanh@...amperecomputing.com>
> ---
>  .../boot/dts/aspeed-bmc-ampere-mtmitchell.dts | 37 ++++++++++++++++++-
>  1 file changed, 36 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm/boot/dts/aspeed-bmc-ampere-mtmitchell.dts b/arch/arm/boot/dts/aspeed-bmc-ampere-mtmitchell.dts
> index 4b91600eaf62..e8a6b1f08d6a 100644
> --- a/arch/arm/boot/dts/aspeed-bmc-ampere-mtmitchell.dts
> +++ b/arch/arm/boot/dts/aspeed-bmc-ampere-mtmitchell.dts
> @@ -251,6 +251,14 @@
>  	pinctrl-0 = <&pinctrl_rgmii1_default>;
>  };
>  
> +&mac3 {
> +	status = "okay";
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&pinctrl_rmii4_default>;
> +	clock-names = "MACCLK", "RCLK";
> +	use-ncsi;
> +};
> +
>  &fmc {
>  	status = "okay";
>  	flash@0 {
> @@ -439,6 +447,26 @@
>  	status = "okay";
>  };
>  
> +&i2c8 {
> +	status = "okay";
> +
> +	pca9539@77 {

Node names should be generic, so I believe this is "gpio".
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation

Best regards,
Krzysztof