linux-kernel - Re: [PATCH 1/7] arm64: dts: qcom: Introduce support for MSM8998 Sony Yoshino platform

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Date:   Tue, 7 Sep 2021 06:04:31 -0700
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...ainline.org>
Cc:     agross@...nel.org, robh+dt@...nel.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, konrad.dybcio@...ainline.org,
        marijn.suijten@...ainline.org, martin.botka@...ainline.org,
        ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org,
        paul.bouchara@...ainline.org
Subject: Re: [PATCH 1/7] arm64: dts: qcom: Introduce support for MSM8998 Sony
 Yoshino platform

On Fri 03 Sep 11:09 PDT 2021, AngeloGioacchino Del Regno wrote:

> This commit introduces support for the Sony Yoshino platform, using
> the MSM8998 SoC, including:
> - Sony Xperia XZ1 (codename Poplar),
> - Sony Xperia XZ1 Compact (codename Lilac),
> - Sony Xperia XZ Premium (codename Maple).
> 

Nice!

> diff --git a/arch/arm64/boot/dts/qcom/msm8998-sony-xperia-yoshino.dtsi b/arch/arm64/boot/dts/qcom/msm8998-sony-xperia-yoshino.dtsi
[..]
> +	vph_pwr: vph-pwr-regulator {
> +		compatible = "regulator-fixed";
> +		regulator-name = "vph_pwr";
> +		regulator-always-on;
> +		regulator-boot-on;
> +	};
> +
> +	gpio_keys {

Please don't use '_' in node names.

> +		compatible = "gpio-keys";
> +		input-name = "gpio-keys";
> +		label = "Side buttons";
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&vol_down_pin_a>, <&cam_focus_pin_a>,
> +			    <&cam_snapshot_pin_a>;
> +		vol-down {
> +			label = "Volume Down";
> +			gpios = <&pm8998_gpio 5 GPIO_ACTIVE_LOW>;
> +			linux,input-type = <1>;
> +			linux,code = <KEY_VOLUMEDOWN>;
> +			gpio-key,wakeup;
> +			debounce-interval = <15>;
> +		};
> +
> +		camera-snapshot {
> +			label = "Camera Snapshot";
> +			gpios = <&pm8998_gpio 7 GPIO_ACTIVE_LOW>;
> +			linux,input-type = <1>;
> +			linux,code = <KEY_CAMERA>;
> +			debounce-interval = <15>;
> +		};
> +
> +		camera-focus {
> +			label = "Camera Focus";
> +			gpios = <&pm8998_gpio 8 GPIO_ACTIVE_LOW>;
> +			linux,input-type = <1>;
> +			linux,code = <KEY_CAMERA_FOCUS>;
> +			debounce-interval = <15>;
> +		};
> +	};
> +
> +	gpio_hall_sensor {

Ditto.

> +		compatible = "gpio-keys";
> +		input-name = "hall-sensors";
> +		label = "Hall sensors";
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&hall_sensor0_default>;
> +
> +		hall_sensor0 {

And here...

> +			label = "Cover Hall Sensor";
> +			gpios = <&tlmm 124 GPIO_ACTIVE_LOW>;
> +			linux,input-type = <EV_SW>;
> +			linux,code = <SW_LID>;
> +			gpio-key,wakeup;
> +			debounce-interval = <30>;
> +		};
> +	};
> +
> +	reserved-memory {
> +		#address-cells = <2>;
> +		#size-cells = <2>;
> +		ranges;
> +
> +		hyp_mem: memory@...00000 {
> +			reg = <0x0 0x85800000 0x0 0x3700000>;
> +			no-map;
> +		};
> +
> +		cont_splash_mem: cont-splash-region@...00000 {

Is there any reason for not just naming this "memory"?

> +			reg = <0x0 0x9d400000 0x0 0x2400000>;
> +			no-map;
> +		};
> +
> +		zap_shader_region: gpu@...00000 {

This is also just "memory" here.

> +			compatible = "shared-dma-pool";
> +			reg = <0x0 0xf6400000 0x0 0x2000>;
> +			no-map;
> +		};
> +
[..]
> +&rpm_requests {
> +	pm8998-regulators {
> +		compatible = "qcom,rpm-pm8998-regulators";
> +
[..]
> +		vreg_lvs1a_1p8: lvs1 { };
> +		vreg_lvs2a_1p8: lvs2 { };
> +

Blank line.

> +	};
> +
> +	pmi8998-regulators {
> +		compatible = "qcom,rpm-pmi8998-regulators";
> +
> +		vdd_bob-supply = <&vph_pwr>;
> +
> +		vreg_bob: bob {
> +			regulator-min-microvolt = <3312000>;
> +			regulator-max-microvolt = <3600000>;
> +		};
> +	};
> +};
> +
> +&sdhc2 {
> +	status = "okay";
> +	cd-gpios = <&tlmm 95 GPIO_ACTIVE_HIGH>;
> +
> +	vmmc-supply = <&vreg_l21a_2p95>;
> +	vqmmc-supply = <&vreg_l13a_2p95>;
> +
> +	pinctrl-names = "default", "sleep";
> +	pinctrl-0 = <&sdc2_clk_on  &sdc2_cmd_on  &sdc2_data_on  &sdc2_cd_on>;
> +	pinctrl-1 = <&sdc2_clk_off &sdc2_cmd_off &sdc2_data_off &sdc2_cd_off>;

How about grouping these various pins as "sdc2_default_state" and
"sdc2_sleep_state"?

> +};
> +
Regards,
Bjorn