Samsung Galaxy S22+ (SM-S906B), codenamed g0s, is a mobile phone from
2022. It features 8GB RAM, 128/256GB UFS 3.1, Exynos 2200 SoC and a
1080x2340 Dynamic AMOLED display.
This device has an issue where cpu2 and cpu3 fail to come up
consistently, which leads to a hang later in the boot process. Disable
them until the problem is figured out.
This initial device tree configures simple-framebuffer, volume-up key and
usb.
Signed-off-by: Ivaylo Ivanov <ivo.ivanov.ivanov1@xxxxxxxxx>
---
arch/arm64/boot/dts/exynos/Makefile | 1 +
arch/arm64/boot/dts/exynos/exynos2200-g0s.dts | 178 ++++++++++++++++++
2 files changed, 179 insertions(+)
create mode 100644 arch/arm64/boot/dts/exynos/exynos2200-g0s.dts
diff --git a/arch/arm64/boot/dts/exynos/Makefile b/arch/arm64/boot/dts/exynos/Makefile
index f6f4bc650..235b9def4 100644
--- a/arch/arm64/boot/dts/exynos/Makefile
+++ b/arch/arm64/boot/dts/exynos/Makefile
@@ -2,6 +2,7 @@
subdir-y += google
dtb-$(CONFIG_ARCH_EXYNOS) += \
+ exynos2200-g0s.dtb \
exynos5433-tm2.dtb \
exynos5433-tm2e.dtb \
exynos7-espresso.dtb \
diff --git a/arch/arm64/boot/dts/exynos/exynos2200-g0s.dts b/arch/arm64/boot/dts/exynos/exynos2200-g0s.dts
new file mode 100644
index 000000000..c0e48f672
--- /dev/null
+++ b/arch/arm64/boot/dts/exynos/exynos2200-g0s.dts
@@ -0,0 +1,178 @@
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+/*
+ * Samsung Galaxy S22+ (g0s/SM-S906B) device tree source
+ *
+ * Copyright (c) 2025, Ivaylo Ivanov <ivo.ivanov.ivanov1@xxxxxxxxx>
+ */
+
+/dts-v1/;
+#include "exynos2200.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+
+/ {
+ model = "Samsung Galaxy S22+ (SM-S906B)";
+ compatible = "samsung,g0s", "samsung,exynos2200";
+ chassis-type = "handset";
+
+ chosen {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+
+ framebuffer: framebuffer {
+ compatible = "simple-framebuffer";
+ memory-region = <&cont_splash_mem>;
+ width = <1080>;
+ height = <2340>;
+ stride = <(1080 * 4)>;
+ format = "a8r8g8b8";
+ };
+ };
+
+ /*
+ * RTC clock (XrtcXTI); external, must be 32.768 kHz.
+ *
+ * TODO: Remove this once RTC clock is implemented properly as part of
+ * PMIC driver.
+ */
+ rtcclk: clock-rtcclk {
+ compatible = "fixed-clock";
+ clock-output-names = "rtcclk";
+ #clock-cells = <0>;
+ clock-frequency = <32768>;
+ };
+
+ /*
+ * cpu2 and cpu3 fail to come up consistently, which leads
+ * to a hang later in the boot process.
+ *
+ * Disable them until the issue is figured out.
+ */
+ cpus {
+ /delete-node/ cpu@200;
+ /delete-node/ cpu@300;
+
+ cpu-map {
+ cluster0 {
+ /delete-node/ core2;
+ /delete-node/ core3;
+ };
+ };
+ };
+
+ gpio-keys {
+ compatible = "gpio-keys";
+
+ pinctrl-0 = <&key_volup>;
+ pinctrl-names = "default";
+
+ volup-key {
+ label = "Volume Up";
+ linux,code = <KEY_VOLUMEUP>;
+ gpios = <&gpa3 0 GPIO_ACTIVE_LOW>;
+ wakeup-source;
+ };
+ };
+
+ memory@80000000 {
+ device_type = "memory";
+ reg = <0x0 0x80000000 0x0 0x80000000>,
+ <0x8 0x80000000 0x1 0x7e000000>;
+ };
+
+ /* TODO: Remove this once PMIC is implemented */
+ reg_dummy: regulator-0 {
+ compatible = "regulator-fixed";
+ regulator-name = "dummy_reg";
+ };
+
+ reserved-memory {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+
+ cont_splash_mem: framebuffer@f6200000 {
+ reg = <0 0xf6200000 0 (1080 * 2340 * 4)>;
+ no-map;
+ };
+
+ debug_kinfo_reserved: debug-kinfo-reserved@fcfff000 {
+ reg = <0 0xfcfff000 0 0x1000>;
+ no-map;
+ };
+
+ log_itmon: log-itmon@fffe0000 {
+ reg = <0 0xfffe0000 0 0x20000>;
+ no-map;
+ };
+ };
+};
+
+&cmu_hsi0 {
+ clocks = <&xtcxo>,
+ <&rtcclk>,
+ <&cmu_top CLK_DOUT_CMU_HSI0_NOC>,
+ <&cmu_top CLK_DOUT_CMU_HSI0_DPGTC>,
+ <&cmu_top CLK_DOUT_CMU_HSI0_DPOSC>,
+ <&cmu_top CLK_DOUT_CMU_HSI0_USB32DRD>;
+ clock-names = "oscclk", "rtcclk", "noc", "dpgtc", "dposc", "usb";
+};
+
+&ext_26m {
+ clock-frequency = <26000000>;
+};
+
+&ext_200m {
+ clock-frequency = <200000000>;
+};
+
+&mct_peris {
+ status = "okay";
+};
+
+&pinctrl_alive {
+ key_volup: key-volup-pins {
+ samsung,pins = "gpa3-0";
+ samsung,pin-function = <EXYNOS_PIN_FUNC_F>;
+ samsung,pin-pud = <EXYNOS_PIN_PULL_UP>;
+ samsung,pin-drv = <EXYNOS7_PIN_DRV_LV4>;
+ };
+};
+
+&ppi_cluster0 {
+ affinity = <&cpu0 &cpu1>;
+};
+
+&usb {
+ /* TODO: Replace these once PMIC is implemented */
+ vdd10-supply = <®_dummy>;
+ vdd33-supply = <®_dummy>;
+ status = "okay";
+};
+
+&usb_dwc3 {
+ dr_mode = "otg";
+ usb-role-switch;
+ role-switch-default-mode = "peripheral";
+ maximum-speed = "high-speed";
+};
+
+&usb_con_phy {
+ /* TODO: Replace these once PMIC is implemented */
+ vdd1p9-supply = <®_dummy>;
+ vdd3-supply = <®_dummy>;
+ status = "okay";
+};
+
+&usb_hsphy {
+ /* TODO: Replace these once PMIC is implemented */
+ vdda12-supply = <®_dummy>;
+ vdd-supply = <®_dummy>;
+ status = "okay";
+};
+
+&xtcxo {
+ clock-frequency = <76800000>;
+};
--
2.43.0
