linux-kernel - Re: [PATCH v5 3/4] arm64: dts: rockchip: add overlay tests for Rock 5B PCIe overlays

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Message-ID: <adbb6ac05bd21ab7be9bec664587469b@manjaro.org>
Date: Mon, 10 Feb 2025 09:49:56 +0100
From: Dragan Simic <dsimic@...jaro.org>
To: Quentin Schulz <foss+kernel@...il.net>
Cc: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, Heiko Stuebner <heiko@...ech.de>, Jagan
 Teki <jagan@...eble.ai>, Niklas Cassel <cassel@...nel.org>, Michael Riesch
 <michael.riesch@...fvision.net>, Jonas Karlman <jonas@...boo.se>,
 devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org, Quentin
 Schulz <quentin.schulz@...rry.de>, Krzysztof Kozlowski
 <krzysztof.kozlowski@...aro.org>
Subject: Re: [PATCH v5 3/4] arm64: dts: rockchip: add overlay tests for Rock
 5B PCIe overlays

On 2025-02-07 16:20, Quentin Schulz wrote:
> From: Quentin Schulz <quentin.schulz@...rry.de>
> 
> According to commit 40658534756f ("arm64: dts: rockchip: Add rock5b
> overlays for PCIe endpoint mode"), Rock 5B can operate in PCIe endpoint
> mode. For that to work, the rk3588-rock-5b-pcie-ep.dtbo overlay needs 
> to
> be applied on Rock 5B base Device Tree. If that Rock 5B is connected to
> another Rock 5B, the latter needs to apply the
> rk3588-rock-5b-pcie-srns.dtbo overlay.
> 
> In order to make sure the overlays are still valid in the future, let's
> add a validation test by applying the overlays on top of the main base
> at build time.
> 
> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> Reviewed-by: Niklas Cassel <cassel@...nel.org>
> Signed-off-by: Quentin Schulz <quentin.schulz@...rry.de>
> ---
>  arch/arm64/boot/dts/rockchip/Makefile | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/rockchip/Makefile
> b/arch/arm64/boot/dts/rockchip/Makefile
> index
> 02f98abe1df10f44f2ac27ea5f6c6e6c6334724e..8f93e0c4d6032d0ca2d93f44384c027e53aa5efb
> 100644
> --- a/arch/arm64/boot/dts/rockchip/Makefile
> +++ b/arch/arm64/boot/dts/rockchip/Makefile
> @@ -196,3 +196,11 @@ rk3568-wolfvision-pf5-vz-2-uhd-dtbs :=
> rk3568-wolfvision-pf5.dtb \
>  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-edgeble-neu6a-wifi.dtb
>  rk3588-edgeble-neu6a-wifi-dtbs := rk3588-edgeble-neu6a-io.dtb \
>  	rk3588-edgeble-neu6a-wifi.dtbo
> +
> +dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-rock-5b-pcie-ep.dtb
> +rk3588-rock-5b-pcie-ep-dtbs := rk3588-rock-5b.dtb \
> +	rk3588-rock-5b-pcie-ep.dtbo
> +
> +dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-rock-5b-pcie-srns.dtb
> +rk3588-rock-5b-pcie-srns-dtbs := rk3588-rock-5b.dtb \
> +	rk3588-rock-5b-pcie-srns.dtbo

Looking good to me, thanks for the patch!  The employed approach was
already discussed and commented in detail in the v4 of this series, [*]
so please feel free to include:

Reviewed-by: Dragan Simic <dsimic@...jaro.org>

[*] 
https://lore.kernel.org/linux-rockchip/a3b98e3d3a2571ee75e59418bb3b6960@manjaro.org/T/#u