The Xiaomi Redmi 2 is a MSM8916 smartphone that was made by Wingtech (codename: wt88047). It's fairly similar to the other MSM8916 devices. The device tree contains initial support for the Xiaomi Redmi 2 with: - UART (untested, probably available via some test points) - eMMC/SD card - Buttons - Vibrator - WiFi/Bluetooth (WCNSS) - USB Note that the Xiaomi Redmi 2 is available in variants with different names (e.g. Redmi 2 Prime, Redmi 2 Pro, ...). As far as I know the main difference between those is the amount of RAM and supported LTE bands. This difference is automatically handled by bootloader/modem firmware so there is no need for separate device trees. Signed-off-by: Stephan Gerhold <stephan@xxxxxxxxxxx> --- The reason this is GPL-2.0-only instead of BSD is the same as for huawei-g7, see https://lore.kernel.org/linux-arm-msm/YMIznk4scPv1qOzP@xxxxxxxxxxx/ --- arch/arm64/boot/dts/qcom/Makefile | 1 + .../dts/qcom/msm8916-wingtech-wt88047.dts | 208 ++++++++++++++++++ 2 files changed, 209 insertions(+) create mode 100644 arch/arm64/boot/dts/qcom/msm8916-wingtech-wt88047.dts diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile index 4f0597091976..a571bfdddd61 100644 --- a/arch/arm64/boot/dts/qcom/Makefile +++ b/arch/arm64/boot/dts/qcom/Makefile @@ -15,6 +15,7 @@ dtb-$(CONFIG_ARCH_QCOM) += msm8916-longcheer-l8910.dtb dtb-$(CONFIG_ARCH_QCOM) += msm8916-mtp.dtb dtb-$(CONFIG_ARCH_QCOM) += msm8916-samsung-a3u-eur.dtb dtb-$(CONFIG_ARCH_QCOM) += msm8916-samsung-a5u-eur.dtb +dtb-$(CONFIG_ARCH_QCOM) += msm8916-wingtech-wt88047.dtb dtb-$(CONFIG_ARCH_QCOM) += msm8992-bullhead-rev-101.dtb dtb-$(CONFIG_ARCH_QCOM) += msm8992-msft-lumia-octagon-talkman.dtb dtb-$(CONFIG_ARCH_QCOM) += msm8992-xiaomi-libra.dtb diff --git a/arch/arm64/boot/dts/qcom/msm8916-wingtech-wt88047.dts b/arch/arm64/boot/dts/qcom/msm8916-wingtech-wt88047.dts new file mode 100644 index 000000000000..5ee35a9b7dc6 --- /dev/null +++ b/arch/arm64/boot/dts/qcom/msm8916-wingtech-wt88047.dts @@ -0,0 +1,208 @@ +// SPDX-License-Identifier: GPL-2.0-only +// Copyright (C) 2020 Stephan Gerhold + +/dts-v1/; + +#include "msm8916-pm8916.dtsi" +#include <dt-bindings/gpio/gpio.h> +#include <dt-bindings/input/input.h> + +/ { + model = "Xiaomi Redmi 2 (Wingtech WT88047)"; + compatible = "wingtech,wt88047", "qcom,msm8916"; + + aliases { + serial0 = &blsp1_uart2; + }; + + chosen { + stdout-path = "serial0"; + }; + + gpio-keys { + compatible = "gpio-keys"; + + pinctrl-names = "default"; + pinctrl-0 = <&gpio_keys_default>; + + label = "GPIO Buttons"; + + 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"; + linux,code = <KEY_VOLUMEDOWN>; +}; + +&pm8916_vib { + status = "okay"; +}; + +&pronto { + status = "okay"; +}; + +&sdhc_1 { + status = "okay"; + + 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>; +}; + +&sdhc_2 { + status = "okay"; + + 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>; + + non-removable; +}; + +&usb { + status = "okay"; + extcon = <&usb_id>, <&usb_id>; +}; + +&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 = <2950000>; + 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 = <2800000>; + regulator-max-microvolt = <3300000>; + }; + + 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 { + pins = "gpio107"; + function = "gpio"; + + drive-strength = <2>; + bias-pull-up; + }; + + usb_id_default: usb-id-default { + pins = "gpio110"; + function = "gpio"; + + drive-strength = <8>; + bias-pull-up; + }; +}; -- 2.32.0
