linux-kernel - Re: [PATCH 2/2] arm64: dts: mediatek: mt8395-genio-1200-evk: add support for TCPC port

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Message-ID: <20241015205637.GB1934266-robh@kernel.org>
Date: Tue, 15 Oct 2024 15:56:37 -0500
From: Rob Herring <robh@...nel.org>
To: Macpaul Lin <macpaul.lin@...iatek.com>
Cc: Chunfeng Yun <chunfeng.yun@...iatek.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	ChiYuan Huang <cy_huang@...htek.com>, linux-usb@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, Bear Wang <bear.wang@...iatek.com>,
	Pablo Sun <pablo.sun@...iatek.com>, Macpaul Lin <macpaul@...il.com>,
	Project_Global_Chrome_Upstream_Group@...iatek.com,
	Chris-qj chen <chris-qj.chen@...iatek.com>,
	Fabien Parent <fparent@...libre.com>,
	Simon Sun <simon.sun@...jingtech.com>
Subject: Re: [PATCH 2/2] arm64: dts: mediatek: mt8395-genio-1200-evk: add
 support for TCPC port

On Tue, Oct 15, 2024 at 06:33:37PM +0800, Macpaul Lin wrote:
> From: Fabien Parent <fparent@...libre.com>
> 
> Enable USB Type-C support on MediaTek MT8395 Genio 1200 EVK by adding
> configuration for TCPC Port, USB-C connector, and related settings.
> 
> Configure dual role switch capability, set up PD (Power Delivery) profiles,
> and establish endpoints for SSUSB (SuperSpeed USB).
> 
> Update pinctrl configurations for U3 P0 VBus default pins and set dr_mode
> to "otg" for OTG (On-The-Go) mode operation.
> 
> Signed-off-by: Fabien Parent <fparent@...libre.com>
> Signed-off-by: Simon Sun <simon.sun@...jingtech.com>
> Signed-off-by: Macpaul Lin <macpaul.lin@...iatek.com>
> ---
>  .../dts/mediatek/mt8395-genio-1200-evk.dts    | 51 +++++++++++++++++++
>  1 file changed, 51 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/mediatek/mt8395-genio-1200-evk.dts b/arch/arm64/boot/dts/mediatek/mt8395-genio-1200-evk.dts
> index 5f16fb820580..b91a46f4a702 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8395-genio-1200-evk.dts
> +++ b/arch/arm64/boot/dts/mediatek/mt8395-genio-1200-evk.dts
> @@ -249,6 +249,39 @@ mt6360: pmic@34 {
>  		#interrupt-cells = <1>;
>  		pinctrl-0 = <&mt6360_pins>;
>  
> +		tcpc {
> +			compatible = "mediatek,mt6360-tcpc";
> +			interrupts-extended = <&pio 17 IRQ_TYPE_LEVEL_LOW>;
> +			interrupt-names = "PD_IRQB";
> +
> +			connector {
> +				compatible = "usb-c-connector";
> +				label = "USB-C";
> +				data-role = "dual";
> +				power-role = "dual";
> +				try-power-role = "sink";
> +				source-pdos = <PDO_FIXED(5000, 1000, \
> +					       PDO_FIXED_DUAL_ROLE | \
> +					       PDO_FIXED_DATA_SWAP)>;
> +				sink-pdos = <PDO_FIXED(5000, 2000, \
> +					     PDO_FIXED_DUAL_ROLE | \
> +					     PDO_FIXED_DATA_SWAP)>;
> +				op-sink-microwatt = <10000000>;
> +			};
> +
> +			ports {
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +
> +				port@0 {
> +					reg = <0>;
> +					mt6360_ssusb_ep: endpoint {
> +						remote-endpoint = <&ssusb_ep>;

No, this is wrong. This should go to 'port@1' in the connector node. 
That is the SS connection.

Rob