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: - GPIO keys - pm8916-vibrator - SDHCI (internal and external storage) - USB Device Mode - UART - WCNSS (WiFi/BT) - Regulators Signed-off-by: Lin, Meng-Bo <linmengbo0689@xxxxxxxxxxxxxx> --- arch/arm64/boot/dts/qcom/Makefile | 1 + .../boot/dts/qcom/msm8916-acer-a1-724.dts | 217 ++++++++++++++++++ 2 files changed, 218 insertions(+) create mode 100644 arch/arm64/boot/dts/qcom/msm8916-acer-a1-724.dts diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile index afe496a93f94..f38a20074013 100644 --- a/arch/arm64/boot/dts/qcom/Makefile +++ b/arch/arm64/boot/dts/qcom/Makefile @@ -7,6 +7,7 @@ dtb-$(CONFIG_ARCH_QCOM) += ipq6018-cp01-c1.dtb dtb-$(CONFIG_ARCH_QCOM) += ipq8074-hk01.dtb dtb-$(CONFIG_ARCH_QCOM) += ipq8074-hk10-c1.dtb dtb-$(CONFIG_ARCH_QCOM) += ipq8074-hk10-c2.dtb +dtb-$(CONFIG_ARCH_QCOM) += msm8916-acer-a1-724.dtb dtb-$(CONFIG_ARCH_QCOM) += msm8916-alcatel-idol347.dtb dtb-$(CONFIG_ARCH_QCOM) += msm8916-asus-z00l.dtb dtb-$(CONFIG_ARCH_QCOM) += msm8916-huawei-g7.dtb diff --git a/arch/arm64/boot/dts/qcom/msm8916-acer-a1-724.dts b/arch/arm64/boot/dts/qcom/msm8916-acer-a1-724.dts new file mode 100644 index 000000000000..67187673364c --- /dev/null +++ b/arch/arm64/boot/dts/qcom/msm8916-acer-a1-724.dts @@ -0,0 +1,217 @@ +// SPDX-License-Identifier: GPL-2.0-only + +/dts-v1/; + +#include "msm8916-pm8916.dtsi" + +#include <dt-bindings/gpio/gpio.h> +#include <dt-bindings/input/input.h> + +/* + * NOTE: The original firmware from Acer can only boot 32-bit kernels. + * To boot this device tree using arm64 it is necessary to flash 64-bit + * TZ/HYP firmware (e.g. taken from the DragonBoard 410c). + * See https://wiki.postmarketos.org/wiki/Acer_Iconia_Talk_S_(acer-a1-724) + * for suggested installation instructions. + */ + +/ { + 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 { + linux,code = <KEY_VOLUMEDOWN>; + status = "okay"; +}; + +&pm8916_vib { + status = "okay"; +}; + +&pronto { + status = "okay"; +}; + +&sdhc_1 { + pinctrl-names = "default", "sleep"; + pinctrl-0 = <&sdc1_clk_on &sdc1_cmd_on &sdc1_data_on>; + pinctrl-1 = <&sdc1_clk_off &sdc1_cmd_off &sdc1_data_off>; + + status = "okay"; +}; + +&sdhc_2 { + pinctrl-names = "default", "sleep"; + pinctrl-0 = <&sdc2_clk_on &sdc2_cmd_on &sdc2_data_on>; + pinctrl-1 = <&sdc2_clk_off &sdc2_cmd_off &sdc2_data_off>; + + cd-gpios = <&msmgpio 38 GPIO_ACTIVE_HIGH>; + + status = "okay"; +}; + +&usb { + extcon = <&usb_id>, <&usb_id>; + status = "okay"; +}; + +&usb_hs_phy { + extcon = <&usb_id>; +}; + +&smd_rpm_regulators { + vdd_l1_l2_l3-supply = <&pm8916_s3>; + vdd_l4_l5_l6-supply = <&pm8916_s4>; + vdd_l7-supply = <&pm8916_s4>; + + s3 { + regulator-min-microvolt = <1200000>; + regulator-max-microvolt = <1300000>; + }; + + s4 { + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <2100000>; + }; + + l1 { + regulator-min-microvolt = <1225000>; + regulator-max-microvolt = <1225000>; + }; + + l2 { + regulator-min-microvolt = <1200000>; + regulator-max-microvolt = <1200000>; + }; + + l4 { + regulator-min-microvolt = <2050000>; + regulator-max-microvolt = <2050000>; + }; + + l5 { + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + }; + + l6 { + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + }; + + l7 { + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + }; + + l8 { + regulator-min-microvolt = <2850000>; + regulator-max-microvolt = <2900000>; + }; + + l9 { + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + }; + + l10 { + regulator-min-microvolt = <2700000>; + regulator-max-microvolt = <2800000>; + }; + + l11 { + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <2950000>; + regulator-allow-set-load; + regulator-system-load = <200000>; + }; + + l12 { + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <2950000>; + }; + + l13 { + regulator-min-microvolt = <3075000>; + regulator-max-microvolt = <3075000>; + }; + + l14 { + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <3300000>; + }; + + l15 { + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <3300000>; + }; + + l16 { + regulator-min-microvolt = <2900000>; + regulator-max-microvolt = <2900000>; + }; + + l17 { + regulator-min-microvolt = <2850000>; + regulator-max-microvolt = <2850000>; + }; + + l18 { + regulator-min-microvolt = <2700000>; + regulator-max-microvolt = <2700000>; + }; +}; + +&msmgpio { + gpio_keys_default: gpio-keys-default-state { + pins = "gpio107"; + function = "gpio"; + + drive-strength = <2>; + bias-pull-up; + }; + + usb_id_default: usb-id-default-state { + pins = "gpio110"; + function = "gpio"; + + drive-strength = <8>; + bias-pull-up; + }; +}; -- 2.30.2
