linux-kernel - Re: [PATCH 2/9] arm64: dts: mediatek: mt8188: Add PCIe nodes

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Message-ID: <7faeac1b-0b7a-a820-16a5-330b82d12e01@mediatek.com>
Date: Wed, 2 Oct 2024 20:42:38 +0800
From: Macpaul Lin <macpaul.lin@...iatek.com>
To: Fei Shao <fshao@...omium.org>, AngeloGioacchino Del Regno
	<angelogioacchino.delregno@...labora.com>, <jianguo.zhang@...iatek.com>,
	<jian.yang@...iatek.com>, <jieyy.yang@...iatek.com>
CC: Conor Dooley <conor+dt@...nel.org>, Krzysztof Kozlowski
	<krzk+dt@...nel.org>, Matthias Brugger <matthias.bgg@...il.com>, Rob Herring
	<robh@...nel.org>, <devicetree@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
	<linux-mediatek@...ts.infradead.org>, Bear Wang <bear.wang@...iatek.com>,
	Pablo Sun <pablo.sun@...iatek.com>
Subject: Re: [PATCH 2/9] arm64: dts: mediatek: mt8188: Add PCIe nodes



On 10/2/24 19:41, Fei Shao wrote:
> 	
> 
> External email : Please do not click links or open attachments until you 
> have verified the sender or the content.
> 
> 
> Add PCIe node and the associated PHY node.
> Individual board device tree should enable the nodes as needed.
> 
> Signed-off-by: Fei Shao <fshao@...omium.org>
> ---
> 
>   arch/arm64/boot/dts/mediatek/mt8188.dtsi | 62 ++++++++++++++++++++++++
>   1 file changed, 62 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/mediatek/mt8188.dtsi b/arch/arm64/boot/dts/mediatek/mt8188.dtsi
> index 10195a4e4e9d..9431f3c5c228 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8188.dtsi
> +++ b/arch/arm64/boot/dts/mediatek/mt8188.dtsi
> @@ -1763,6 +1763,53 @@ xhci0: usb@...b0000 {
>   			status = "disabled";
>   		};
>   
> +		pcie: pcie@...f0000 {
> +			compatible = "mediatek,mt8188-pcie", "mediatek,mt8192-pcie";
> +			reg = <0 0x112f0000 0 0x2000>;
> +			reg-names = "pcie-mac";

It seems the property 'linux,pci-domain = <0>;' is missing?

[snip]

> +			};
> +		};
> +
>   		nor_flash: spi@...2c000 {
>   			compatible = "mediatek,mt8188-nor", "mediatek,mt8186-nor";
>   			reg = <0 0x1132c000 0 0x1000>;
> @@ -1775,6 +1822,21 @@ nor_flash: spi@...2c000 {
>   			status = "disabled";
>   		};
>   
> +		pciephy: t-phy@...20700 {
> +			compatible = "mediatek,mt8188-tphy", "mediatek,generic-tphy-v3";
> +			ranges = <0 0 0x11c20700 0x700>;
> +			#address-cells = <1>;
> +			#size-cells = <1>;
> +			status = "disabled";
> +

The power-domains property is missing.
It should be 'power-domains = <&spm MT8188_POWER_DOMAIN_PEXTP_PHY_TOP>;'

> +			pcieport: pcie-phy@0 {
> +				reg = <0 0x700>;
> +				clocks = <&topckgen CLK_TOP_CFGREG_F_PCIE_PHY_REF>;
> +				clock-names = "ref";
> +				#phy-cells = <1>;
> +			};
> +		};
> +
>   		i2c1: i2c@...00000 {
>   			compatible = "mediatek,mt8188-i2c";
>   			reg = <0 0x11e00000 0 0x1000>,

Thanks!
Best regards,
Macpaul Lin