Re: [PATCH 2/4] arm64: dts: qcom: sc8280xp-crd: Introduce pmic_glink

[Konrad Dybcio <konrad.dybcio@linaro.org>]

On 8.02.2023 04:46, Bjorn Andersson wrote:
> From: Bjorn Andersson <bjorn.andersson@linaro.org>
> 
> The SC8280XP CRD control over battery management and its two USB Type-C
> port using pmic_glink and two GPIO-based SBU muxes.
> 
> Enable the two DisplayPort instances, GPIO SBU mux instance and
> pmic_glink with the two connectors on the CRD.
> 
> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
> Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
> ---
>  arch/arm64/boot/dts/qcom/sc8280xp-crd.dts | 191 +++++++++++++++++++++-
>  1 file changed, 189 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sc8280xp-crd.dts b/arch/arm64/boot/dts/qcom/sc8280xp-crd.dts
> index 3f116a879e22..35b63c3962f0 100644
> --- a/arch/arm64/boot/dts/qcom/sc8280xp-crd.dts
> +++ b/arch/arm64/boot/dts/qcom/sc8280xp-crd.dts
> @@ -36,6 +36,77 @@ chosen {
>  		stdout-path = "serial0:115200n8";
>  	};
>  
> +	pmic-glink {
> +		compatible = "qcom,sc8280xp-pmic-glink", "qcom,pmic-glink";
> +
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		connector@0 {
> +			compatible = "usb-c-connector";
> +			reg = <0>;
> +			power-role = "dual";
> +			data-role = "dual";
> +
> +			ports {
> +				#address-cells = <1>;
> +				#size-cells = <0>;
Add a newline between the last propreties and first subnodes, please.

> +				port@0 {
> +					reg = <0>;
> +					pmic_glink_con0_hs: endpoint {
> +						remote-endpoint = <&usb_0_role_switch>;
> +					};
> +				};
> +
> +				port@1 {
> +					reg = <1>;
> +					pmic_glink_con0_ss: endpoint {
> +						remote-endpoint = <&mdss0_dp0_out>;
> +					};
> +				};
> +
> +				port@2 {
> +					reg = <2>;
> +					pmic_glink_con0_sbu: endpoint {
> +						remote-endpoint = <&usb0_sbu_mux>;
> +					};
> +				};
> +			};
> +		};
> +
> +		connector@1 {
> +			compatible = "usb-c-connector";
> +			reg = <1>;
> +			power-role = "dual";
> +			data-role = "dual";
> +
> +			ports {
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +				port@0 {
> +					reg = <0>;
> +					pmic_glink_con1_hs: endpoint {
> +						remote-endpoint = <&usb_1_role_switch>;
> +					};
> +				};
> +
> +				port@1 {
> +					reg = <1>;
> +					pmic_glink_con1_ss: endpoint {
> +						remote-endpoint = <&mdss0_dp1_out>;
> +					};
> +				};
> +
> +				port@2 {
> +					reg = <2>;
> +					pmic_glink_con1_sbu: endpoint {
> +						remote-endpoint = <&usb1_sbu_mux>;
> +					};
> +				};
> +			};
> +		};
> +	};
> +
>  	vreg_edp_3p3: regulator-edp-3p3 {
>  		compatible = "regulator-fixed";
>  
> @@ -139,6 +210,46 @@ linux,cma {
>  			linux,cma-default;
>  		};
>  	};
> +
> +	usb0-sbu-mux {
> +		compatible = "pericom,pi3usb102", "gpio-sbu-mux";
> +
> +		enable-gpios = <&tlmm 101 GPIO_ACTIVE_LOW>;
> +		select-gpios = <&tlmm 164 GPIO_ACTIVE_HIGH>;
> +
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&usb0_sbu_default>;
> +
> +		mode-switch;
> +		orientation-switch;
> +		svid = /bits/ 16 <0xff01>;
> +
> +		port {
> +			usb0_sbu_mux: endpoint {
> +				remote-endpoint = <&pmic_glink_con0_sbu>;
> +			};
> +		};
> +	};
> +
> +	usb1-sbu-mux {
> +		compatible = "pericom,pi3usb102", "gpio-sbu-mux";
> +
> +		enable-gpios = <&tlmm 48 GPIO_ACTIVE_LOW>;
> +		select-gpios = <&tlmm 47 GPIO_ACTIVE_HIGH>;
> +
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&usb1_sbu_default>;
> +
> +		mode-switch;
> +		orientation-switch;
> +		svid = /bits/ 16 <0xff01>;
> +
> +		port {
> +			usb1_sbu_mux: endpoint {
> +				remote-endpoint = <&pmic_glink_con1_sbu>;
> +			};
> +		};
> +	};
>  };
>  
>  &apps_rsc {
> @@ -262,6 +373,36 @@ &mdss0 {
>  	status = "okay";
>  };
>  
> +&mdss0_dp0 {
> +	status = "okay";
> +
> +	data-lanes = <0 1>;
Status last; is this really only 2 lanes?

> +
> +	ports {
> +		port@1 {
> +			reg = <1>;
> +			mdss0_dp0_out: endpoint {
> +				remote-endpoint = <&pmic_glink_con0_ss>;
> +			};
> +		};
> +	};
> +};
> +
> +&mdss0_dp1 {
> +	status = "okay";
> +
> +	data-lanes = <0 1>;
Ditto

> +
> +	ports {
> +		port@1 {
> +			reg = <1>;
> +			mdss0_dp1_out: endpoint {
> +				remote-endpoint = <&pmic_glink_con1_ss>;
> +			};
> +		};
> +	};
> +};
> +
>  &mdss0_dp3 {
>  	compatible = "qcom,sc8280xp-edp";
>  	/delete-property/ #sound-dai-cells;
> @@ -480,8 +621,13 @@ &usb_0 {
>  };
>  
>  &usb_0_dwc3 {
> -	/* TODO: Define USB-C connector properly */
>  	dr_mode = "host";
> +
> +	port {
> +		usb_0_role_switch: endpoint {
> +			remote-endpoint = <&pmic_glink_con0_hs>;
> +		};
This should be defined in the SoC DTSI, it's a standard dwc3 binding
with usb HS / SS / SBU ports. Especially since we can feed the endpoint
from any device now, as pmic-glink should work everywhere.

Or /omit-if-no-ref/, I suppose.

> +	};
>  };
>  
>  &usb_0_hsphy {
> @@ -504,8 +650,13 @@ &usb_1 {
>  };
>  
>  &usb_1_dwc3 {
> -	/* TODO: Define USB-C connector properly */
>  	dr_mode = "host";
> +
> +	port {
> +		usb_1_role_switch: endpoint {
> +			remote-endpoint = <&pmic_glink_con1_hs>;
> +		};
> +	};
>  };
>  
>  &usb_1_hsphy {
> @@ -709,4 +860,40 @@ reset-n-pins {
>  			drive-strength = <16>;
>  		};
>  	};
> +
> +	usb0_sbu_default: usb0-sbu-state {
> +		oe-n-pins {
> +			pins = "gpio101";
> +			function = "gpio";
No drive-strength/bias/i/o?

Konrad
> +		};
> +
> +		sel-pins {
> +			pins = "gpio164";
> +			function = "gpio";
> +		};
> +
> +		mode-pins {
> +			pins = "gpio167";
> +			function = "gpio";
> +			output-high;
> +		};
> +	};
> +
> +	usb1_sbu_default: usb1-sbu-state {
> +		oe-n-pins {
> +			pins = "gpio48";
> +			function = "gpio";
> +		};
> +
> +		sel-pins {
> +			pins = "gpio47";
> +			function = "gpio";
> +		};
> +
> +		mode-pins {
> +			pins = "gpio50";
> +			function = "gpio";
> +			output-high;
> +		};
> +	};
>  };