linux-kernel - Re: [PATCH v2 4/6] arm64: dts: qcom: sc8280xp: Add reference device

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Date:   Wed, 22 Jun 2022 11:06:51 +0200
From:   Johan Hovold <johan@...nel.org>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     Andy Gross <agross@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Manivannan Sadhasivam <mani@...nel.org>,
        Jassi Brar <jassisinghbrar@...il.com>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 4/6] arm64: dts: qcom: sc8280xp: Add reference device

On Tue, Jun 21, 2022 at 09:12:22PM -0700, Bjorn Andersson wrote:
> Add basic support for the SC8280XP reference device, which allows it to
> boot to a shell (using EFIFB) with functional storage (UFS), USB,
> keyboard, touchpad, touchscreen, backlight and remoteprocs.
> 
> The PMICs are, per socinfo, reused from other platforms. But given that
> the address of the PMICs doesn't match other cases and that it's
> desirable to label things according to the schematics a new dtsi file is
> created to represent the reference combination of PMICs.
> 
> Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
> ---
> 
> Changes since v1:
> - Reordered "status" last
> - Fixed invalid PMIC gpio 0
> - Replaced "hid" name with touchscreen, touchpad and keyboard

You also added the HID vdd-supply properties from the X13s devicetree.

I assume the CRD also uses vreg_misc_3p3 for these (always-on for now
anyway).

> - Added &xo_board_clk frequency

> +	vreg_misc_3p3: misc-3p3-regulator {
> +		compatible = "regulator-fixed";
> +
> +		regulator-name = "VREG_MISC_3P3";
> +		regulator-min-microvolt = <3300000>;
> +		regulator-max-microvolt = <3300000>;
> +
> +		gpio = <&pmc8280_1_gpios 1 GPIO_ACTIVE_HIGH>;
> +		enable-active-high;
> +
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&misc_3p3_reg_en>;
> +
> +		regulator-boot-on;
> +		regulator-always-on;
> +	};

> +&qup0_i2c4 {
> +	clock-frequency = <400000>;
> +
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&qup0_i2c4_default>, <&ts0_default>;
> +
> +	status = "okay";
> +
> +	touchscreen@10 {
> +		compatible = "hid-over-i2c";
> +		reg = <0x10>;
> +		hid-descr-addr = <0x1>;
> +		interrupts-extended = <&tlmm 175 IRQ_TYPE_LEVEL_LOW>;
> +		vdd-supply = <&vreg_misc_3p3>;
> +	};
> +};

> +&qup2_i2c5 {
> +	clock-frequency = <400000>;
> +
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&qup2_i2c5_default>, <&kybd_default>, <&tpad_default>;
> +
> +	status = "okay";
> +
> +	touchpad@15 {
> +		compatible = "hid-over-i2c";
> +		reg = <0x15>;
> +		hid-descr-addr = <0x1>;
> +		interrupts-extended = <&tlmm 182 IRQ_TYPE_LEVEL_LOW>;
> +		vdd-supply = <&vreg_misc_3p3>;
> +	};
> +
> +	keyboard@68 {
> +		compatible = "hid-over-i2c";
> +		reg = <0x68>;
> +		hid-descr-addr = <0x1>;
> +		interrupts-extended = <&tlmm 104 IRQ_TYPE_LEVEL_LOW>;
> +		vdd-supply = <&vreg_misc_3p3>;
> +	};
> +};

[...]

> +&usb_1_qmpphy {
> +	vdda-phy-supply = <&vreg_l4b>;
> +	vdda-pll-supply = <&vreg_l3b>;
> +
> +	status = "okay";
> +};
> +
> +/* PINCTRL - additions to nodes defined in sc8280xp.dtsi */
> +
> +&pmc8280_1_gpios {
> +	edp_bl_en: edp-bl-en-state {
> +		pins = "gpio8";
> +		function = "normal";
> +	};
> +
> +	edp_bl_reg_en: edp-bl-reg-en-state {
> +		pins = "gpio9";
> +		function = "normal";
> +	};
> +
> +	misc_3p3_reg_en: misc-3p3-reg-en-state {
> +		pins = "gpio1";
> +		function = "normal";
> +	};
> +};
> +
> +&pmc8280c_gpios {
> +	edp_bl_pwm: edp-bl-pwm-state {
> +		pins = "gpio8";
> +		function = "func1";
> +	};
> +};
> +
> +&xo_board_clk {
> +	clock-frequency = <38400000>;
> +};

Nit: This one should go after &usb_1_qmpphy above if we want to keep the
pinctrl nodes last.

> +
> +&tlmm {

Reviewed-by: Johan Hovold <johan+linaro@...nel.org>

Johan