linux-kernel - Re: [PATCH v9 09/10] arm64: dts: qcom: sa8295p: Enable tertiary controller and its 4 USB ports

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Message-ID: <115ad8f2-72ff-90fe-c27e-c298b7b00993@linaro.org>
Date:   Sat, 24 Jun 2023 00:40:59 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Krishna Kurapati <quic_kriskura@...cinc.com>,
        Thinh Nguyen <Thinh.Nguyen@...opsys.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Felipe Balbi <balbi@...nel.org>,
        Wesley Cheng <quic_wcheng@...cinc.com>,
        Johan Hovold <johan@...nel.org>
Cc:     linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        quic_pkondeti@...cinc.com, quic_ppratap@...cinc.com,
        quic_jackp@...cinc.com, quic_harshq@...cinc.com,
        ahalaney@...hat.com, quic_shazhuss@...cinc.com
Subject: Re: [PATCH v9 09/10] arm64: dts: qcom: sa8295p: Enable tertiary
 controller and its 4 USB ports

On 21.06.2023 06:36, Krishna Kurapati wrote:
> Enable tertiary controller for SA8295P (based on SC8280XP).
> Add pinctrl support for usb ports to provide VBUS to connected peripherals.
> 
> Signed-off-by: Krishna Kurapati <quic_kriskura@...cinc.com>
> ---
>  arch/arm64/boot/dts/qcom/sa8295p-adp.dts | 53 ++++++++++++++++++++++++
>  1 file changed, 53 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sa8295p-adp.dts b/arch/arm64/boot/dts/qcom/sa8295p-adp.dts
> index fd253942e5e5..8b24b3c55769 100644
> --- a/arch/arm64/boot/dts/qcom/sa8295p-adp.dts
> +++ b/arch/arm64/boot/dts/qcom/sa8295p-adp.dts
> @@ -9,6 +9,7 @@
>  #include <dt-bindings/gpio/gpio.h>
>  #include <dt-bindings/regulator/qcom,rpmh-regulator.h>
>  #include <dt-bindings/spmi/spmi.h>
> +#include <dt-bindings/pinctrl/qcom,pmic-gpio.h>
>  
>  #include "sa8540p.dtsi"
>  #include "sa8540p-pmics.dtsi"
> @@ -584,6 +585,20 @@ &usb_1_qmpphy {
>  	status = "okay";
>  };
>  
> +&usb_2 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&usb2_en_state>,
> +		    <&usb3_en_state>,
> +		    <&usb4_en_state>,
> +		    <&usb5_en_state>;
Please put property-names after property
> +
> +	status = "okay";
> +};
> +
> +&usb_2_dwc3 {
> +	dr_mode = "host";
> +};
If I understood correctly, the MP controller is host-only. In that case,
I'd say that putting this property in the SoC-dtsi node with an appropriate
comment would be beneficial.

lgtm otherwise

Konrad
> +
>  &usb_2_hsphy0 {
>  	vdda-pll-supply = <&vreg_l5a>;
>  	vdda18-supply = <&vreg_l7g>;
> @@ -729,3 +744,41 @@ wake-n-pins {
>  		};
>  	};
>  };
> +
> +&pmm8540c_gpios {
> +	usb2_en_state: usb2-en-state {
> +		pins = "gpio9";
> +		function = "normal";
> +		qcom,drive-strength = <PMIC_GPIO_STRENGTH_HIGH>;
> +		output-high;
> +		power-source = <0>;
> +	};
> +};
> +
> +&pmm8540e_gpios {
> +	usb3_en_state: usb3-en-state {
> +		pins = "gpio5";
> +		function = "normal";
> +		qcom,drive-strength = <PMIC_GPIO_STRENGTH_HIGH>;
> +		output-high;
> +		power-source = <0>;
> +	};
> +};
> +
> +&pmm8540g_gpios {
> +	usb4_en_state: usb4-en-state {
> +		pins = "gpio5";
> +		function = "normal";
> +		qcom,drive-strength = <PMIC_GPIO_STRENGTH_HIGH>;
> +		output-high;
> +		power-source = <0>;
> +	};
> +
> +	usb5_en_state: usb5-en-state {
> +		pins = "gpio9";
> +		function = "normal";
> +		qcom,drive-strength = <PMIC_GPIO_STRENGTH_HIGH>;
> +		output-high;
> +		power-source = <0>;
> +	};
> +};