linux-kernel - Re: [PATCH v3 2/2] arm64: dts: ti: k3-j721s2: Add overlay to enable main CPSW2G with GESI

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Date:   Fri, 8 Sep 2023 17:17:25 -0500
From:   Rob Herring <robh+dt@...nel.org>
To:     Siddharth Vadapalli <s-vadapalli@...com>
Cc:     nm@...com, vigneshr@...com, kristo@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org, afd@...com,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, r-gunasekaran@...com,
        srk@...com
Subject: Re: [PATCH v3 2/2] arm64: dts: ti: k3-j721s2: Add overlay to enable
 main CPSW2G with GESI

On Wed, Jul 26, 2023 at 1:54 AM Siddharth Vadapalli <s-vadapalli@...com> wrote:
>
> From: Kishon Vijay Abraham I <kishon@...com>
>
> The MAIN CPSW2G instance of CPSW on J721S2 SoC can be enabled with the GESI
> Expansion Board connected to the J7 Common-Proc-Board. Use the overlay
> to enable this.
>
> Add alias for the MAIN CPSW2G port to enable kernel to fetch MAC address
> directly from U-Boot.
>
> Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
> Signed-off-by: Siddharth Vadapalli <s-vadapalli@...com>
> Reviewed-by: Ravi Gunasekaran <r-gunasekaran@...com>
> ---
>  arch/arm64/boot/dts/ti/Makefile               |  2 +
>  .../dts/ti/k3-j721s2-evm-gesi-exp-board.dtso  | 85 +++++++++++++++++++
>  2 files changed, 87 insertions(+)
>  create mode 100644 arch/arm64/boot/dts/ti/k3-j721s2-evm-gesi-exp-board.dtso
>
> diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
> index 6dd7b6f1d6ab..019a8be19b93 100644
> --- a/arch/arm64/boot/dts/ti/Makefile
> +++ b/arch/arm64/boot/dts/ti/Makefile
> @@ -51,6 +51,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-j721e-sk.dtb
>  # Boards with J721s2 SoC
>  dtb-$(CONFIG_ARCH_K3) += k3-am68-sk-base-board.dtb
>  dtb-$(CONFIG_ARCH_K3) += k3-j721s2-common-proc-board.dtb
> +dtb-$(CONFIG_ARCH_K3) += k3-j721s2-evm-gesi-exp-board.dtbo

Overlays need to be applied to something. That's done like this:

foo-dtbs := base.dtb k3-am62x-sk-hdmi-audio.dtbo
dtb-y += foo.dtb

Please send a fix for this.

Rob