[PATCH v7 3/3] ARM: dts: qcom: msm8960: expressatt: Add camera flash
From: Rudraksha Gupta via B4 Relay <devnull+guptarud.gmail.com@kernel.org>
Date: 2026-09-13 02:38:08
Also in:
b4-sent, linux-arm-msm, linux-leds, lkml, phone-devel
Subsystem:
arm/qualcomm mailing list, arm/qualcomm support, the rest · Maintainers:
Bjorn Andersson, Konrad Dybcio, Linus Torvalds
From: Rudraksha Gupta <redacted> Add camera flash support for the Samsung Galaxy Express (expressatt). Downstream references: Link: https://github.com/LineageOS/android_kernel_samsung_d2/blob/stable/cm-12.0-YNG4N/drivers/leds/Makefile#L51 Link: https://github.com/LineageOS/android_kernel_samsung_d2/blob/stable/cm-12.0-YNG4N/arch/arm/mach-msm/board-apexq-camera.c#L591 Assisted-by: Claude:claude-opus-4.6 Reviewed-by: David Heidelberg <david@ixit.cz> Reviewed-by: Konrad Dybcio <redacted> Signed-off-by: Rudraksha Gupta <redacted> --- .../dts/qcom/qcom-msm8960-samsung-expressatt.dts | 44 ++++++++++++++++++++++ 1 file changed, 44 insertions(+)
diff --git a/arch/arm/boot/dts/qcom/qcom-msm8960-samsung-expressatt.dts b/arch/arm/boot/dts/qcom/qcom-msm8960-samsung-expressatt.dts
index 5a3d88e31cf5..b7218ee1349f 100644
--- a/arch/arm/boot/dts/qcom/qcom-msm8960-samsung-expressatt.dts
+++ b/arch/arm/boot/dts/qcom/qcom-msm8960-samsung-expressatt.dts@@ -1,11 +1,13 @@ // SPDX-License-Identifier: GPL-2.0 #include <dt-bindings/input/input.h> +#include <dt-bindings/leds/common.h> #include <dt-bindings/reset/qcom,gcc-msm8960.h> #include "qcom-msm8960.dtsi" #include "pm8921.dtsi" #include <dt-bindings/gpio/gpio.h> #include <dt-bindings/pinctrl/qcom,pmic-gpio.h> +#include <dt-bindings/pinctrl/qcom,pmic-mpp.h> #include <dt-bindings/input/gpio-keys.h> / {
@@ -61,6 +63,32 @@ touchkey_enable: touchkey-enable { regulator-boot-on; }; + vreg_flash: regulator-flash { + compatible = "regulator-fixed"; + regulator-name = "VREG_FLASH_3P3"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + gpio = <&pm8921_mpps 4 GPIO_ACTIVE_HIGH>; + enable-active-high; + pinctrl-0 = <&flash_led_unlock>; + pinctrl-names = "default"; + }; + + led-controller { + compatible = "richtek,rt8515"; + enf-gpios = <&tlmm 3 GPIO_ACTIVE_HIGH>; + vin-supply = <&vreg_flash>; + richtek,rfs-ohms = <16000>; + pinctrl-0 = <&cam_flash_en>; + pinctrl-names = "default"; + + led { + function = LED_FUNCTION_FLASH; + color = <LED_COLOR_ID_WHITE>; + flash-max-timeout-us = <250000>; + }; + }; + i2c-gpio-touchkey { compatible = "i2c-gpio"; #address-cells = <1>;
@@ -171,6 +199,13 @@ touchscreen@4a { }; &tlmm { + cam_flash_en: cam-flash-en-state { + pins = "gpio3"; + function = "gpio"; + drive-strength = <16>; + bias-pull-down; + }; + spi1_default: spi1-default-state { mosi-pins { pins = "gpio6";
@@ -571,3 +606,12 @@ magnetometer@2e { /* TODO: Figure out Mount Matrix */ }; }; + +&pm8921_mpps { + flash_led_unlock: flash-led-unlock-state { + pins = "mpp4"; + function = "digital"; + output-low; + power-source = <PM8921_MPP_S4>; + }; +};
--
2.55.0