linux-kernel - Re: [PATCH v2 2/3] arm64: dts: renesas: r8a779g0: Describe root port on R-Car V4H

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Message-ID: <mu2zj3ph5px34iyclaeirhry4nknevwqkqhqyyecugio2gpkst@fsaxfqtnc6nn>
Date: Wed, 4 Jun 2025 22:56:43 +0530
From: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To: Marek Vasut <marek.vasut+renesas@...lbox.org>
Cc: linux-arm-kernel@...ts.infradead.org, 
	Bartosz Golaszewski <brgl@...ev.pl>, Bjorn Helgaas <bhelgaas@...gle.com>, 
	Conor Dooley <conor+dt@...nel.org>, Geert Uytterhoeven <geert+renesas@...der.be>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Magnus Damm <magnus.damm@...il.com>, 
	Rob Herring <robh@...nel.org>, Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>, 
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org, 
	linux-renesas-soc@...r.kernel.org
Subject: Re: [PATCH v2 2/3] arm64: dts: renesas: r8a779g0: Describe root port
 on R-Car V4H

On Sat, May 31, 2025 at 12:53:20AM +0200, Marek Vasut wrote:
> Add node which describes the root port into PCIe controller DT node.
> This can be used together with pwrctrl driver to control clock and
> power supply to a PCIe slot. For example usage, refer to V4H Sparrow
> Hawk board.
> 
> Signed-off-by: Marek Vasut <marek.vasut+renesas@...lbox.org>

Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>

- Mani

> ---
> Cc: Bartosz Golaszewski <brgl@...ev.pl>
> Cc: Bjorn Helgaas <bhelgaas@...gle.com>
> Cc: Conor Dooley <conor+dt@...nel.org>
> Cc: Geert Uytterhoeven <geert+renesas@...der.be>
> Cc: Krzysztof Kozlowski <krzk+dt@...nel.org>
> Cc: Magnus Damm <magnus.damm@...il.com>
> Cc: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
> Cc: Rob Herring <robh@...nel.org>
> Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
> Cc: devicetree@...r.kernel.org
> Cc: linux-kernel@...r.kernel.org
> Cc: linux-pci@...r.kernel.org
> Cc: linux-renesas-soc@...r.kernel.org
> ---
> V2: New patch
> ---
>  arch/arm64/boot/dts/renesas/r8a779g0.dtsi | 20 ++++++++++++++++++++
>  1 file changed, 20 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/renesas/r8a779g0.dtsi b/arch/arm64/boot/dts/renesas/r8a779g0.dtsi
> index 6dbf05a559357..8d9ca30c299c9 100644
> --- a/arch/arm64/boot/dts/renesas/r8a779g0.dtsi
> +++ b/arch/arm64/boot/dts/renesas/r8a779g0.dtsi
> @@ -798,6 +798,16 @@ pciec0: pcie@...d0000 {
>  					<0 0 0 4 &gic GIC_SPI 449 IRQ_TYPE_LEVEL_HIGH>;
>  			snps,enable-cdm-check;
>  			status = "disabled";
> +
> +			/* PCIe bridge, Root Port */
> +			pciec0_rp: pci@0,0 {
> +				#address-cells = <3>;
> +				#size-cells = <2>;
> +				reg = <0x0 0x0 0x0 0x0 0x0>;
> +				compatible = "pciclass,0604";
> +				device_type = "pci";
> +				ranges;
> +			};
>  		};
>  
>  		pciec1: pcie@...d8000 {
> @@ -835,6 +845,16 @@ pciec1: pcie@...d8000 {
>  					<0 0 0 4 &gic GIC_SPI 456 IRQ_TYPE_LEVEL_HIGH>;
>  			snps,enable-cdm-check;
>  			status = "disabled";
> +
> +			/* PCIe bridge, Root Port */
> +			pciec1_rp: pci@0,0 {
> +				#address-cells = <3>;
> +				#size-cells = <2>;
> +				reg = <0x0 0x0 0x0 0x0 0x0>;
> +				compatible = "pciclass,0604";
> +				device_type = "pci";
> +				ranges;
> +			};
>  		};
>  
>  		pciec0_ep: pcie-ep@...d0000 {
> -- 
> 2.47.2
> 

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