linux-kernel - Re: [PATCH v2 2/3] arm64: dts: qcom: msm8916-acer-a1-724: Add initial device tree

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Date:   Sun, 20 Nov 2022 11:51:00 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     "Lin, Meng-Bo" <linmengbo0689@...tonmail.com>,
        linux-kernel@...r.kernel.org
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Stephan Gerhold <stephan@...hold.net>,
        Nikita Travkin <nikita@...n.ru>, devicetree@...r.kernel.org,
        linux-arm-msm@...r.kernel.org,
        ~postmarketos/upstreaming@...ts.sr.ht
Subject: Re: [PATCH v2 2/3] arm64: dts: qcom: msm8916-acer-a1-724: Add initial
 device tree

On 19/11/2022 21:46, Lin, Meng-Bo wrote:
> Acer Iconia Talk S A1-724 is a tablet using the MSM8916 SoC released
> in 2014.
> 
> Note: The original firmware from Acer can only boot 32-bit kernels.
> To boot arm64 kernels it is necessary to flash 64-bit TZ/HYP firmware
> with EDL, e.g. taken from the DragonBoard 410c. This works because Acer
> didn't set up (firmware) secure boot.
> 
> Add a device tree for with initial support for:

Thank you for your patch. There is something to discuss/improve.

> +
> +/ {
> +	model = "Acer Iconia Talk S A1-724";
> +	compatible = "acer,a1-724", "qcom,msm8916";
> +	chassis-type = "tablet";
> +
> +	aliases {
> +		serial0 = &blsp1_uart2;
> +	};
> +
> +	chosen {
> +		stdout-path = "serial0";
> +	};
> +
> +	gpio-keys {
> +		compatible = "gpio-keys";
> +
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&gpio_keys_default>;
> +
> +		label = "GPIO Buttons";
> +
> +		button-volume-up {
> +			label = "Volume Up";
> +			gpios = <&msmgpio 107 GPIO_ACTIVE_LOW>;
> +			linux,code = <KEY_VOLUMEUP>;
> +		};
> +	};
> +
> +	usb_id: usb-id {
> +		compatible = "linux,extcon-usb-gpio";
> +		id-gpio = <&msmgpio 110 GPIO_ACTIVE_HIGH>;
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&usb_id_default>;
> +	};
> +};
> +
> +&blsp1_uart2 {
> +	status = "okay";
> +};
> +
> +&pm8916_resin {
> +	status = "okay";

status is the last property

> +	linux,code = <KEY_VOLUMEDOWN>;
> +};
> +
> +&pm8916_vib {
> +	status = "okay";
> +};
> +
> +&pronto {
> +	status = "okay";
> +};
> +
> +&sdhc_1 {
> +	status = "okay";

Here as well and in all other places.


Best regards,
Krzysztof