[PATCH 0/3] arm64: dts: qcom: sm7125-samsung: add initial device tree for SM7125 Samsung platform

[PATCH 0/3] arm64: dts: qcom: sm7125-samsung: add initial device tree for SM7125 Samsung platform

[Erikas Bitovtas]

Samsung Galaxy A52/A72 are smartphones released in 2021 on SM7125
(atoll) platform. This patch series introduces support for SM7125
Samsung devices with the following components enabled:
- Framebuffer
- GPIO keys
- Hall sensor
- Vibrator
- Regulators
- Reset input
- Real-time clock
- SD card
- UFS
- USB
Along with that, SM7125 was affected by a hang when launching SHM
bridge. A similar issue was reported on a similar chipset:
https://lore.kernel.org/all/20250721-sc7180-shm-hang-v1-1-99ad9ffeb5b4@trvn.ru/
Add SM7125 to the qcom_tzmem_blacklist to avoid hangs when booting.

Signed-off-by: Erikas Bitovtas <xerikasxx@gmail.com>
---
Erikas Bitovtas (2):
      dt-bindings: arm: qcom: Document Samsung Galaxy A52/A72
      arm64: dts: qcom: sm7125-samsung: add initial device tree

Vitalii Skorkin (1):
      firmware: qcom: tzmem: disable SHM bridge for SM7125 platform

 Documentation/devicetree/bindings/arm/qcom.yaml    |   2 +
 arch/arm64/boot/dts/qcom/Makefile                  |   2 +
 arch/arm64/boot/dts/qcom/sm7125-samsung-a52q.dts   |  31 ++
 arch/arm64/boot/dts/qcom/sm7125-samsung-a72q.dts   |  31 ++
 .../arm64/boot/dts/qcom/sm7125-samsung-common.dtsi | 518 +++++++++++++++++++++
 drivers/firmware/qcom/qcom_tzmem.c                 |   1 +
 6 files changed, 585 insertions(+)
---
base-commit: 6eb8711ece2ce27e52e327a5b7a628ed39b97f45
change-id: 20260627-sm7125-samsung-b685d8b9cd40

Best regards,
--  
Erikas Bitovtas <xerikasxx@gmail.com>

[PATCH 1/3] dt-bindings: arm: qcom: Document Samsung Galaxy A52/A72

[Erikas Bitovtas]

Add compatibles for Samsung Galaxy A52 and A72.

Signed-off-by: Erikas Bitovtas <xerikasxx@gmail.com>
---
 Documentation/devicetree/bindings/arm/qcom.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/qcom.yaml b/Documentation/devicetree/bindings/arm/qcom.yaml
index 667607ae2c32..ec3d9be06dd9 100644
--- a/Documentation/devicetree/bindings/arm/qcom.yaml
+++ b/Documentation/devicetree/bindings/arm/qcom.yaml
@@ -1036,6 +1036,8 @@ properties:
 
       - items:
           - enum:
+              - samsung,a52q
+              - samsung,a72q
               - xiaomi,curtana
               - xiaomi,joyeuse
           - const: qcom,sm7125

-- 
2.55.0

[PATCH 2/3] firmware: qcom: tzmem: disable SHM bridge for SM7125 platform

[Erikas Bitovtas]

From: Vitalii Skorkin <nikroksm@mail.ru>

Currently SHM bridge causes RCU stalls when booting. Disable it for
SM7125 until a fix is available.

Signed-off-by: Vitalii Skorkin <nikroksm@mail.ru>
Signed-off-by: Erikas Bitovtas <xerikasxx@gmail.com>
---
 drivers/firmware/qcom/qcom_tzmem.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/firmware/qcom/qcom_tzmem.c b/drivers/firmware/qcom/qcom_tzmem.c
index 0635cbeacfc8..50f500834758 100644
--- a/drivers/firmware/qcom/qcom_tzmem.c
+++ b/drivers/firmware/qcom/qcom_tzmem.c
@@ -81,6 +81,7 @@ static const char *const qcom_tzmem_blacklist[] = {
 	"qcom,sc8180x",
 	"qcom,sdm670", /* failure in GPU firmware loading */
 	"qcom,sdm845", /* reset in rmtfs memory assignment */
+	"qcom,sm7125", /* hang in rmtfs memory assignment */
 	"qcom,sm7150", /* reset in rmtfs memory assignment */
 	"qcom,sm8150", /* reset in rmtfs memory assignment */
 	NULL

-- 
2.55.0

[PATCH 3/3] arm64: dts: qcom: sm7125-samsung: add initial device tree

[Erikas Bitovtas]

Samsung Galaxy A52/A72 are devices released on atoll (SM7125) platform
in 2021. Add initial device tree for SM7125 Samsung platform with
support for:
- Framebuffer
- GPIO keys
- Hall sensor
- Vibrator
- Regulators
- Reset input
- Real-time clock
- SD card
- UFS
- USB

Tested-by: Stefan Hansson <newbyte@postmarketos.org>
Signed-off-by: Erikas Bitovtas <xerikasxx@gmail.com>
---
 arch/arm64/boot/dts/qcom/Makefile                  |   2 +
 arch/arm64/boot/dts/qcom/sm7125-samsung-a52q.dts   |  31 ++
 arch/arm64/boot/dts/qcom/sm7125-samsung-a72q.dts   |  31 ++
 .../arm64/boot/dts/qcom/sm7125-samsung-common.dtsi | 518 +++++++++++++++++++++
 4 files changed, 582 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
index 6f33c4e2f09c..d90311806e21 100644
--- a/arch/arm64/boot/dts/qcom/Makefile
+++ b/arch/arm64/boot/dts/qcom/Makefile
@@ -344,6 +344,8 @@ dtb-$(CONFIG_ARCH_QCOM)	+= sm6125-xiaomi-laurel-sprout.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sm6125-xiaomi-willow.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sm6350-sony-xperia-lena-pdx213.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sm6375-sony-xperia-murray-pdx225.dtb
+dtb-$(CONFIG_ARCH_QCOM)	+= sm7125-samsung-a52q.dtb
+dtb-$(CONFIG_ARCH_QCOM)	+= sm7125-samsung-a72q.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sm7125-xiaomi-curtana.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sm7125-xiaomi-joyeuse.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sm7225-fairphone-fp4.dtb
diff --git a/arch/arm64/boot/dts/qcom/sm7125-samsung-a52q.dts b/arch/arm64/boot/dts/qcom/sm7125-samsung-a52q.dts
new file mode 100644
index 000000000000..e4d005054b00
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/sm7125-samsung-a52q.dts
@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * SM7125 Samsung Galaxy A52 (a52q) specific device tree source
+ *
+ * Copyright (c) 2026, The Linux Foundation. All rights reserved.
+ */
+
+/dts-v1/;
+
+#include "sm7125-samsung-common.dtsi"
+
+/ {
+	model = "Samsung Galaxy A52";
+	compatible = "samsung,a52q", "qcom,sm7125";
+	qcom,board-id = <0x22 0x6>;
+
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		rmtfs_mem: memory@f4f01000 {
+			compatible = "qcom,rmtfs-mem";
+			reg = <0 0xf4f01000 0 0x200000>;
+			no-map;
+
+			qcom,client-id = <1>;
+			qcom,vmid = <QCOM_SCM_VMID_MSS_MSA>;
+		};
+	};
+};
diff --git a/arch/arm64/boot/dts/qcom/sm7125-samsung-a72q.dts b/arch/arm64/boot/dts/qcom/sm7125-samsung-a72q.dts
new file mode 100644
index 000000000000..df8d637ef16f
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/sm7125-samsung-a72q.dts
@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * SM7125 Samsung Galaxy A72 (a72q) specific device tree source
+ *
+ * Copyright (c) 2026, The Linux Foundation. All rights reserved.
+ */
+
+/dts-v1/;
+
+#include "sm7125-samsung-common.dtsi"
+
+/ {
+	model = "Samsung Galaxy A72";
+	compatible = "samsung,a72q", "qcom,sm7125";
+	qcom,board-id = <0x22 0x5>;
+
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		rmtfs_mem: memory@f3701000 {
+			compatible = "qcom,rmtfs-mem";
+			reg = <0 0xf3701000 0 0x200000>;
+			no-map;
+
+			qcom,client-id = <1>;
+			qcom,vmid = <QCOM_SCM_VMID_MSS_MSA>;
+		};
+	};
+};
diff --git a/arch/arm64/boot/dts/qcom/sm7125-samsung-common.dtsi b/arch/arm64/boot/dts/qcom/sm7125-samsung-common.dtsi
new file mode 100644
index 000000000000..836dc9b8b1a5
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/sm7125-samsung-common.dtsi
@@ -0,0 +1,518 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * SM7125 Samsung common device tree source
+ *
+ * Copyright (c) 2026, The Linux Foundation. All rights reserved.
+ */
+
+#include <dt-bindings/arm/qcom,ids.h>
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/regulator/qcom,rpmh-regulator.h>
+#include <dt-bindings/pinctrl/qcom,pmic-gpio.h>
+#include "sm7125.dtsi"
+#include "pm6150.dtsi"
+#include "pm6150l.dtsi"
+
+/delete-node/ &rmtfs_mem;
+/delete-node/ &ipa_fw_mem;
+/delete-node/ &tz_mem;
+
+/ {
+	chassis-type = "handset";
+
+	qcom,msm-id = <QCOM_ID_SM7125 0>;
+
+	chosen {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		framebuffer@9c000000 {
+			compatible = "simple-framebuffer";
+			reg = <0x0 0x9c000000 0x0 (1080 * 2400 * 4)>;
+			width = <1080>;
+			height = <2400>;
+			stride = <(1080 * 4)>;
+			format = "a8r8g8b8";
+			clocks = <&gcc GCC_DISP_HF_AXI_CLK>;
+		};
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&key_vol_up_default>, <&hall_sensor_default>;
+
+		vol-up {
+			label = "Volume up";
+			gpios = <&pm6150l_gpios 8 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_VOLUMEUP>;
+			debounce-interval = <15>;
+		};
+
+		event-hall-sensor {
+			label = "Hall Effect Sensor";
+			gpios = <&pm6150_gpios 10 GPIO_ACTIVE_LOW>;
+			linux,input-type = <EV_SW>;
+			linux,code = <SW_LID>;
+			debounce-interval = <15>;
+		};
+	};
+
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		tz_mem: memory@80b00000 {
+			reg = <0x0 0x80b00000 0x0 0x7100000>;
+			no-map;
+		};
+
+		mpss_mem: memory@8b000000 {
+			reg = <0x0 0x8b000000 0x0 0x8900000>;
+			no-map;
+		};
+
+		wlan_mem: memory@93900000 {
+			reg = <0x0 0x93900000 0x0 0x200000>;
+			no-map;
+		};
+
+		ipa_fw_mem: memory@93b00000 {
+			reg = <0x0 0x93b00000 0x0 0x10000>;
+			no-map;
+		};
+
+		ipa_gsi_region: memory@93b10000 {
+			reg = <0x0 0x93b10000 0x0 0x5000>;
+			no-map;
+		};
+
+		gpu_mem: memory@93b15000 {
+			reg = <0x0 0x93b15000 0x0 0x2000>;
+			no-map;
+		};
+
+		adsp_mem: memory@93c00000 {
+			reg = <0x0 0x93c00000 0x0 0x3e00000>;
+			no-map;
+		};
+
+		camera_region: memory@97a00000 {
+			reg = <0x0 0x97a00000 0x0 0x500000>;
+			no-map;
+		};
+
+		pil_npu_region: memory@97f00000 {
+			reg = <0x0 0x97f00000 0x0 0x500000>;
+			no-map;
+		};
+
+		venus_mem: memory@98400000 {
+			reg = <0x0 0x98400000 0x0 0x500000>;
+			no-map;
+		};
+
+		cdsp_mem: memory@98900000 {
+			reg = <0x0 0x98900000 0x0 0x1e00000>;
+			no-map;
+		};
+
+		cont_splash_mem: memory@9c000000 {
+			reg = <0x0 0x9c000000 0x0 (1080 * 2400 * 4)>;
+			no-map;
+		};
+
+		qseecom_region: memory@9e000000 {
+			reg = <0x0 0x9e000000 0x0 0x2000000>;
+			no-map;
+		};
+
+		pstore_mem: ramoops@b4600000 {
+			compatible = "ramoops";
+			reg = <0x0 0xb4600000 0x0 0x100000>;
+			record-size = <0x40000>;
+			console-size = <0x40000>;
+			ftrace-size = <0x40000>;
+			pmsg-size = <0x40000>;
+		};
+	};
+
+	vibrator {
+		compatible = "gpio-vibrator";
+		enable-gpios = <&tlmm 57 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+	};
+};
+
+&apps_rsc {
+	pm6150-rpmh-regulators {
+		compatible = "qcom,pm6150-rpmh-regulators";
+		qcom,pmic-id = "a";
+
+		vreg_s1a_1p1: smps1 {
+			regulator-min-microvolt = <1128000>;
+			regulator-max-microvolt = <1128000>;
+		};
+
+		vreg_s4a_1p0: smps4 {
+			regulator-min-microvolt = <824000>;
+			regulator-max-microvolt = <1120000>;
+		};
+
+		vreg_s5a_2p0: smps5 {
+			regulator-min-microvolt = <1744000>;
+			regulator-max-microvolt = <2040000>;
+		};
+
+		vreg_l1a_1p2: ldo1 {
+			regulator-min-microvolt = <1178000>;
+			regulator-max-microvolt = <1256000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l2a_1p0: ldo2 {
+			regulator-min-microvolt = <944000>;
+			regulator-max-microvolt = <1056000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l3a_1p0: ldo3 {
+			regulator-min-microvolt = <968000>;
+			regulator-max-microvolt = <1064000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l4a_0p9: ldo4 {
+			regulator-min-microvolt = <824000>;
+			regulator-max-microvolt = <928000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+			regulator-allow-set-load;
+			regulator-allowed-modes = <RPMH_REGULATOR_MODE_LPM
+						   RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l5a_2p7: ldo5 {
+			regulator-min-microvolt = <3304000>;
+			regulator-max-microvolt = <3304000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l6a_0p6: ldo6 {
+			regulator-min-microvolt = <568000>;
+			regulator-max-microvolt = <648000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vdd_cx_wlan:
+		vreg_l9a_0p8: ldo9 {
+			regulator-min-microvolt = <488000>;
+			regulator-max-microvolt = <800000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l10a_1p8: ldo10 {
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <1832000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l11a_1p8: ldo11 {
+			regulator-min-microvolt = <1696000>;
+			regulator-max-microvolt = <1904000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l12a_1p8: ldo12 {
+			regulator-min-microvolt = <1696000>;
+			regulator-max-microvolt = <1952000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+			regulator-allow-set-load;
+			regulator-allowed-modes = <RPMH_REGULATOR_MODE_LPM
+						   RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l13a_1p8: ldo13 {
+			regulator-min-microvolt = <1696000>;
+			regulator-max-microvolt = <1904000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l14a_1p8: ldo14 {
+			regulator-min-microvolt = <1728000>;
+			regulator-max-microvolt = <1832000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l15a_1p8: ldo15 {
+			regulator-min-microvolt = <1696000>;
+			regulator-max-microvolt = <1904000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l16a_2p7: ldo16 {
+			regulator-min-microvolt = <2496000>;
+			regulator-max-microvolt = <3304000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l17a_3p1: ldo17 {
+			regulator-min-microvolt = <2920000>;
+			regulator-max-microvolt = <3232000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l18a_3p0: ldo18 {
+			regulator-min-microvolt = <2496000>;
+			regulator-max-microvolt = <3304000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l19a_2p85: ldo19 {
+			regulator-min-microvolt = <2696000>;
+			regulator-max-microvolt = <3304000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+			regulator-allow-set-load;
+			regulator-allowed-modes = <RPMH_REGULATOR_MODE_LPM
+						   RPMH_REGULATOR_MODE_HPM>;
+		};
+	};
+
+	pm6150l-rpmh-regulators {
+		compatible = "qcom,pm6150l-rpmh-regulators";
+		qcom,pmic-id = "c";
+
+		vreg_s8c_1p3: smps8 {
+			regulator-min-microvolt = <1120000>;
+			regulator-max-microvolt = <1408000>;
+		};
+
+		vreg_l1c_1p8: ldo1 {
+			regulator-min-microvolt = <1616000>;
+			regulator-max-microvolt = <1984000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l2c_1p3: ldo2 {
+			regulator-min-microvolt = <1168000>;
+			regulator-max-microvolt = <1304000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l3c_1p2: ldo3 {
+			regulator-min-microvolt = <1144000>;
+			regulator-max-microvolt = <1304000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+			regulator-allow-set-load;
+			regulator-allowed-modes = <RPMH_REGULATOR_MODE_LPM
+						   RPMH_REGULATOR_MODE_HPM>;
+		};
+
+
+		vreg_l4c_1p8: ldo4 {
+			regulator-min-microvolt = <1648000>;
+			regulator-max-microvolt = <3304000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l5c_1p8: ldo5 {
+			regulator-min-microvolt = <1648000>;
+			regulator-max-microvolt = <3304000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l6c_3p0: ldo6 {
+			regulator-min-microvolt = <1648000>;
+			regulator-max-microvolt = <3304000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l7c_3p0: ldo7 {
+			regulator-min-microvolt = <3000000>;
+			regulator-max-microvolt = <3000000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l8c_1p8: ldo8 {
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <1800000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l9c_2p95: ldo9 {
+			regulator-min-microvolt = <2952000>;
+			regulator-max-microvolt = <3304000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l10c_3p3: ldo10 {
+			regulator-min-microvolt = <3000000>;
+			regulator-max-microvolt = <3400000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_l11c_3p3: ldo11 {
+			regulator-min-microvolt = <3000000>;
+			regulator-max-microvolt = <3400000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
+
+		vreg_bob: bob {
+			regulator-min-microvolt = <3008000>;
+			regulator-max-microvolt = <3960000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_AUTO>;
+		};
+	};
+};
+
+&dispcc {
+	/* HACK: disable until a panel driver is ready to retain simplefb */
+	status = "disabled";
+};
+
+&pm6150l_gpios {
+	key_vol_up_default: key-vol-up-default-state {
+		pins = "gpio8";
+		function = "normal";
+		input-enable;
+		bias-pull-up;
+		power-source = <0>;
+	};
+};
+
+&pm6150_gpios {
+	hall_sensor_default: hall-sensor-default-state {
+		pins = "gpio10";
+		function = "normal";
+		output-disable;
+		bias-disable;
+		power-source = <0>;
+	};
+};
+
+&pm6150_pon {
+	/* LinuxLoader fastboot implementation has most of it's commands removed
+	 * by Samsung, making it useless. So reboot to Odin download mode instead.
+	 */
+	mode-bootloader = <0x15>;
+};
+
+&pm6150_resin {
+	linux,code = <KEY_VOLUMEDOWN>;
+	status = "okay";
+};
+
+&pm6150_rtc {
+	status = "okay";
+};
+
+&qfprom {
+	vcc-supply = <&vreg_l11a_1p8>;
+};
+
+&sdhc_2 {
+	pinctrl-names = "default", "sleep";
+	pinctrl-0 = <&sdc2_on>;
+	pinctrl-1 = <&sdc2_off>;
+	vmmc-supply = <&vreg_l9c_2p95>;
+	vqmmc-supply = <&vreg_l6c_3p0>;
+
+	cd-gpios = <&tlmm 69 GPIO_ACTIVE_LOW>;
+	status = "okay";
+};
+
+&tlmm {
+	gpio-reserved-ranges = <59 4>;
+
+	sdc2_on: sdc2-on-state {
+		pinconf-clk {
+			pins = "sdc2_clk";
+			bias-disable;
+			drive-strength = <16>;
+		};
+
+		pinconf-cmd {
+			pins = "sdc2_cmd";
+			bias-pull-up;
+			drive-strength = <10>;
+		};
+
+		pinconf-data {
+			pins = "sdc2_data";
+			bias-pull-up;
+			drive-strength = <10>;
+		};
+
+		pinconf-sd-cd {
+			pins = "gpio69";
+			bias-pull-up;
+			drive-strength = <2>;
+		};
+	};
+
+	sdc2_off: sdc2-off-state {
+		pinconf-clk {
+			pins = "sdc2_clk";
+			bias-disable;
+			drive-strength = <2>;
+		};
+
+		pinconf-cmd {
+			pins = "sdc2_cmd";
+			bias-pull-up;
+			drive-strength = <2>;
+		};
+
+		pinconf-data {
+			pins = "sdc2_data";
+			bias-pull-up;
+			drive-strength = <2>;
+		};
+
+		pinconf-sd-cd {
+			pins = "gpio69";
+			bias-pull-up;
+			drive-strength = <2>;
+		};
+	};
+};
+
+&ufs_mem_hc {
+	vcc-supply = <&vreg_l19a_2p85>;
+	vcc-max-microamp = <600000>;
+	vccq2-supply = <&vreg_l12a_1p8>;
+	vccq2-max-microamp = <600000>;
+	status = "okay";
+};
+
+&ufs_mem_phy {
+	vdda-phy-supply = <&vreg_l4a_0p9>;
+	vdda-pll-supply = <&vreg_l3c_1p2>;
+	status = "okay";
+};
+
+&usb_1 {
+	qcom,select-utmi-as-pipe-clk;
+	status = "okay";
+};
+
+&usb_1_dwc3 {
+	dr_mode = "peripheral";
+	maximum-speed = "high-speed";
+	status = "okay";
+};
+
+&usb_1_hsphy {
+	vdd-supply = <&vreg_l4a_0p9>;
+	vdda-pll-supply = <&vreg_l11a_1p8>;
+	vdda-phy-dpdm-supply = <&vreg_l17a_3p1>;
+	status = "okay";
+};
+
+&usb_1_qmpphy {
+	vdda-phy-supply = <&vreg_l4a_0p9>;
+	vdda-pll-supply = <&vreg_l3c_1p2>;
+	status = "okay";
+};

-- 
2.55.0

Re: [PATCH 3/3] arm64: dts: qcom: sm7125-samsung: add initial device tree

[sashiko-bot]

Thank you for your contribution! Sashiko AI review found 2 potential issue(s) to consider:
- [Low] The `vibrator` node specifies `pinctrl-names = "default";` but lacks the required `pinctrl-0` property to define the pin configuration for the GPIO.
- [Low] The GPIO key node `vol-up` violates the `gpio-keys.yaml` binding schema naming convention.
--

commit 4c3f46af7d91551d5cb47755e411d4869514c5fb
Author: Erikas Bitovtas <xerikasxx@gmail.com>

arm64: dts: qcom: sm7125-samsung: add initial device tree
    
This commit adds the initial device tree for the Samsung Galaxy A52 and A72
devices on the SM7125 platform. It introduces support for basic peripherals
including the framebuffer, GPIO keys, sensors, and regulators.

> diff --git a/arch/arm64/boot/dts/qcom/sm7125-samsung-common.dtsi b/arch/arm64/boot/dts/qcom/sm7125-samsung-common.dtsi
> new file mode 100644
> index 0000000000000..836dc9b8b1a56
> --- /dev/null
> +++ b/arch/arm64/boot/dts/qcom/sm7125-samsung-common.dtsi

[ ... ]

> +	gpio-keys {
> +		compatible = "gpio-keys";
> +
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&key_vol_up_default>, <&hall_sensor_default>;
> +
> +		vol-up {

[Severity: Low]
Does this node name violate the gpio-keys.yaml schema?

It looks like dtbs_check expects names following the pattern button-*,
event-*, key-*, or switch-*. Could this be named "key-vol-up" or
"button-vol-up" to avoid validation warnings?

> +			label = "Volume up";
> +			gpios = <&pm6150l_gpios 8 GPIO_ACTIVE_LOW>;
> +			linux,code = <KEY_VOLUMEUP>;
> +			debounce-interval = <15>;
> +		};

[ ... ]

> +	vibrator {
> +		compatible = "gpio-vibrator";
> +		enable-gpios = <&tlmm 57 GPIO_ACTIVE_HIGH>;
> +		pinctrl-names = "default";

[Severity: Low]
Is there a missing pinctrl-0 property here? 

The pinctrl-names property is defined as "default", but without a
corresponding pinctrl-0, this will trigger a dtbs_check warning and leave
the pin configuration to hardware defaults.

> +	};
> +};

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/20260703-sm7125-samsung-v1-0-3e5f752048c1@gmail.com?part=3

Re: [PATCH 2/3] firmware: qcom: tzmem: disable SHM bridge for SM7125 platform

[Bartosz Golaszewski]

On Fri, 3 Jul 2026 09:59:39 +0200, Erikas Bitovtas <xerikasxx@gmail.com> said:
> From: Vitalii Skorkin <nikroksm@mail.ru>
>
> Currently SHM bridge causes RCU stalls when booting. Disable it for
> SM7125 until a fix is available.
>
> Signed-off-by: Vitalii Skorkin <nikroksm@mail.ru>
> Signed-off-by: Erikas Bitovtas <xerikasxx@gmail.com>
> ---
>  drivers/firmware/qcom/qcom_tzmem.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/firmware/qcom/qcom_tzmem.c b/drivers/firmware/qcom/qcom_tzmem.c
> index 0635cbeacfc8..50f500834758 100644
> --- a/drivers/firmware/qcom/qcom_tzmem.c
> +++ b/drivers/firmware/qcom/qcom_tzmem.c
> @@ -81,6 +81,7 @@ static const char *const qcom_tzmem_blacklist[] = {
>  	"qcom,sc8180x",
>  	"qcom,sdm670", /* failure in GPU firmware loading */
>  	"qcom,sdm845", /* reset in rmtfs memory assignment */
> +	"qcom,sm7125", /* hang in rmtfs memory assignment */
>  	"qcom,sm7150", /* reset in rmtfs memory assignment */
>  	"qcom,sm8150", /* reset in rmtfs memory assignment */
>  	NULL
>
> --
> 2.55.0
>
>

Acked-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>

Re: [PATCH 1/3] dt-bindings: arm: qcom: Document Samsung Galaxy A52/A72

[Bartosz Golaszewski]

On Fri, 3 Jul 2026 09:59:38 +0200, Erikas Bitovtas <xerikasxx@gmail.com> said:
> Add compatibles for Samsung Galaxy A52 and A72.
>
> Signed-off-by: Erikas Bitovtas <xerikasxx@gmail.com>
> ---
>  Documentation/devicetree/bindings/arm/qcom.yaml | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/arm/qcom.yaml b/Documentation/devicetree/bindings/arm/qcom.yaml
> index 667607ae2c32..ec3d9be06dd9 100644
> --- a/Documentation/devicetree/bindings/arm/qcom.yaml
> +++ b/Documentation/devicetree/bindings/arm/qcom.yaml
> @@ -1036,6 +1036,8 @@ properties:
>
>        - items:
>            - enum:
> +              - samsung,a52q
> +              - samsung,a72q
>                - xiaomi,curtana
>                - xiaomi,joyeuse
>            - const: qcom,sm7125
>
> --
> 2.55.0
>
>

Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>

Re: [PATCH 3/3] arm64: dts: qcom: sm7125-samsung: add initial device tree

[Konrad Dybcio]

On 7/3/26 9:59 AM, Erikas Bitovtas wrote:
> Samsung Galaxy A52/A72 are devices released on atoll (SM7125) platform
> in 2021. Add initial device tree for SM7125 Samsung platform with
> support for:

[...]

hello, mainly just style nits

> +		rmtfs_mem: memory@f4f01000 {
> +			compatible = "qcom,rmtfs-mem";
> +			reg = <0 0xf4f01000 0 0x200000>;

0 -> 0x0 (also in all similar cases)

[...]


> +	gpio-keys {
> +		compatible = "gpio-keys";
> +
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&key_vol_up_default>, <&hall_sensor_default>;

property-n
property-names

[...]

> +&apps_rsc {
> +	pm6150-rpmh-regulators {
> +		compatible = "qcom,pm6150-rpmh-regulators";
> +		qcom,pmic-id = "a";

have vou verified your reg settings? incorrect ones may lead to
hw damage

[...]


> +&pm6150_pon {
> +	/* LinuxLoader fastboot implementation has most of it's commands removed
> +	 * by Samsung, making it useless. So reboot to Odin download mode instead.
> +	 */

/*
 * foo
 */


> +	mode-bootloader = <0x15>;
> +};
> +
> +&pm6150_resin {
> +	linux,code = <KEY_VOLUMEDOWN>;
> +	status = "okay";

let's keep an \n before 'status'

[...]

> +&tlmm {
> +	gpio-reserved-ranges = <59 4>;

Do we know what they're connected to? If so, please add a comment, like
in glymur-crd.dtsi

[...]

> +&usb_1 {
> +	qcom,select-utmi-as-pipe-clk;
> +	status = "okay";
> +};
> +
> +&usb_1_dwc3 {
> +	dr_mode = "peripheral";
> +	maximum-speed = "high-speed";

Does super-speed not work (if you also remove the qcom,select... above)?

Konrad

Re: [PATCH 3/3] arm64: dts: qcom: sm7125-samsung: add initial device tree

[Erikas Bitovtas]

>> +&apps_rsc {
>> +	pm6150-rpmh-regulators {
>> +		compatible = "qcom,pm6150-rpmh-regulators";
>> +		qcom,pmic-id = "a";
> 
> have vou verified your reg settings? incorrect ones may lead to
> hw damage
> 
The only deviation from downstream I have is in ldo5 in pm6150 where
Samsung set it to 3.3V exactly, but we can't pick such value in
mainline, because it happens to sit in between a step. So I set it to
3.304V instead.

Re: [PATCH 2/3] firmware: qcom: tzmem: disable SHM bridge for SM7125 platform

[Dmitry Baryshkov]

On Fri, Jul 03, 2026 at 10:59:39AM +0300, Erikas Bitovtas wrote:
> From: Vitalii Skorkin <nikroksm@mail.ru>
> 
> Currently SHM bridge causes RCU stalls when booting. Disable it for
> SM7125 until a fix is available.
> 
> Signed-off-by: Vitalii Skorkin <nikroksm@mail.ru>
> Signed-off-by: Erikas Bitovtas <xerikasxx@gmail.com>
> ---
>  drivers/firmware/qcom/qcom_tzmem.c | 1 +
>  1 file changed, 1 insertion(+)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>


-- 
With best wishes
Dmitry

Re: [PATCH 3/3] arm64: dts: qcom: sm7125-samsung: add initial device tree

[Erikas Bitovtas]

>> +&usb_1_dwc3 {
>> +	dr_mode = "peripheral";
>> +	maximum-speed = "high-speed";
> 
> Does super-speed not work (if you also remove the qcom,select... above)?
> 
> Konrad

I can make a file transfer over scp, but the speed is inconsistent and
slower than with high-speed. Must be because this device does not
support USB 3.0 (super-speed).

Re: [PATCH 3/3] arm64: dts: qcom: sm7125-samsung: add initial device tree

[Erikas Bitovtas]

>> +&usb_1_dwc3 {
>> +	dr_mode = "peripheral";
>> +	maximum-speed = "high-speed";
> 
> Does super-speed not work (if you also remove the qcom,select... above)?
> 
> Konrad

I can make a file transfer over scp, but the speed is inconsistent and
slower than with high-speed. It must be because this device does not
support USB 3.0 (super-speed).

Re: [PATCH 3/3] arm64: dts: qcom: sm7125-samsung: add initial device tree

[David Heidelberg]

On 03/07/2026 09:59, Erikas Bitovtas wrote:
> Samsung Galaxy A52/A72 are devices released on atoll (SM7125) platform
> in 2021. Add initial device tree for SM7125 Samsung platform with
> support for:
> - Framebuffer
> - GPIO keys
> - Hall sensor
> - Vibrator
> - Regulators
> - Reset input
> - Real-time clock
> - SD card
> - UFS
> - USB
> 
> Tested-by: Stefan Hansson <newbyte@postmarketos.org>
> Signed-off-by: Erikas Bitovtas <xerikasxx@gmail.com>
> ---
>   arch/arm64/boot/dts/qcom/Makefile                  |   2 +
>   arch/arm64/boot/dts/qcom/sm7125-samsung-a52q.dts   |  31 ++
>   arch/arm64/boot/dts/qcom/sm7125-samsung-a72q.dts   |  31 ++
>   .../arm64/boot/dts/qcom/sm7125-samsung-common.dtsi | 518 +++++++++++++++++++++
>   4 files changed, 582 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
> index 6f33c4e2f09c..d90311806e21 100644
> --- a/arch/arm64/boot/dts/qcom/Makefile
> +++ b/arch/arm64/boot/dts/qcom/Makefile
> @@ -344,6 +344,8 @@ dtb-$(CONFIG_ARCH_QCOM)	+= sm6125-xiaomi-laurel-sprout.dtb
>   dtb-$(CONFIG_ARCH_QCOM)	+= sm6125-xiaomi-willow.dtb
>   dtb-$(CONFIG_ARCH_QCOM)	+= sm6350-sony-xperia-lena-pdx213.dtb
>   dtb-$(CONFIG_ARCH_QCOM)	+= sm6375-sony-xperia-murray-pdx225.dtb
> +dtb-$(CONFIG_ARCH_QCOM)	+= sm7125-samsung-a52q.dtb
> +dtb-$(CONFIG_ARCH_QCOM)	+= sm7125-samsung-a72q.dtb
>   dtb-$(CONFIG_ARCH_QCOM)	+= sm7125-xiaomi-curtana.dtb
>   dtb-$(CONFIG_ARCH_QCOM)	+= sm7125-xiaomi-joyeuse.dtb
>   dtb-$(CONFIG_ARCH_QCOM)	+= sm7225-fairphone-fp4.dtb
> diff --git a/arch/arm64/boot/dts/qcom/sm7125-samsung-a52q.dts b/arch/arm64/boot/dts/qcom/sm7125-samsung-a52q.dts
> new file mode 100644
> index 000000000000..e4d005054b00
> --- /dev/null
> +++ b/arch/arm64/boot/dts/qcom/sm7125-samsung-a52q.dts
> @@ -0,0 +1,31 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * SM7125 Samsung Galaxy A52 (a52q) specific device tree source
> + *
> + * Copyright (c) 2026, The Linux Foundation. All rights reserved.
> + */
> +
> +/dts-v1/;
> +
> +#include "sm7125-samsung-common.dtsi"
> +
> +/ {
> +	model = "Samsung Galaxy A52";
> +	compatible = "samsung,a52q", "qcom,sm7125";
> +	qcom,board-id = <0x22 0x6>;
> +
> +	reserved-memory {
> +		#address-cells = <2>;
> +		#size-cells = <2>;
> +		ranges;
> +
> +		rmtfs_mem: memory@f4f01000 {
> +			compatible = "qcom,rmtfs-mem";
> +			reg = <0 0xf4f01000 0 0x200000>;

Hi Erikas!

the start on the 0x1000 offset sounds suspicious, doesn't it need 0xf4f0 0000 
and size 0x202000  with qcom,use-guard-pages ?

You can also share most of the properties and define it in the -common.dtsi


> +			no-map;
> +
> +			qcom,client-id = <1>;
> +			qcom,vmid = <QCOM_SCM_VMID_MSS_MSA>;
> +		};
> +	};
> +};
> diff --git a/arch/arm64/boot/dts/qcom/sm7125-samsung-a72q.dts b/arch/arm64/boot/dts/qcom/sm7125-samsung-a72q.dts
> new file mode 100644
> index 000000000000..df8d637ef16f
> --- /dev/null
> +++ b/arch/arm64/boot/dts/qcom/sm7125-samsung-a72q.dts
> @@ -0,0 +1,31 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * SM7125 Samsung Galaxy A72 (a72q) specific device tree source
> + *
> + * Copyright (c) 2026, The Linux Foundation. All rights reserved.
> + */
> +
> +/dts-v1/;
> +
> +#include "sm7125-samsung-common.dtsi"
> +
> +/ {
> +	model = "Samsung Galaxy A72";
> +	compatible = "samsung,a72q", "qcom,sm7125";
> +	qcom,board-id = <0x22 0x5>;
> +
> +	reserved-memory {
> +		#address-cells = <2>;
> +		#size-cells = <2>;
> +		ranges;
> +
> +		rmtfs_mem: memory@f3701000 {
> +			compatible = "qcom,rmtfs-mem";
> +			reg = <0 0xf3701000 0 0x200000>;

same rmtfs comment as above

> +			no-map;
> +
> +			qcom,client-id = <1>;
> +			qcom,vmid = <QCOM_SCM_VMID_MSS_MSA>;
> +		};
> +	};
> +};
> diff --git a/arch/arm64/boot/dts/qcom/sm7125-samsung-common.dtsi b/arch/arm64/boot/dts/qcom/sm7125-samsung-common.dtsi
> new file mode 100644
> index 000000000000..836dc9b8b1a5
> --- /dev/null
> +++ b/arch/arm64/boot/dts/qcom/sm7125-samsung-common.dtsi
> @@ -0,0 +1,518 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * SM7125 Samsung common device tree source
> + *
> + * Copyright (c) 2026, The Linux Foundation. All rights reserved.
> + */
> +
> +#include <dt-bindings/arm/qcom,ids.h>
> +#include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/regulator/qcom,rpmh-regulator.h>
> +#include <dt-bindings/pinctrl/qcom,pmic-gpio.h>
> +#include "sm7125.dtsi"
> +#include "pm6150.dtsi"
> +#include "pm6150l.dtsi"
> +
> +/delete-node/ &rmtfs_mem;
> +/delete-node/ &ipa_fw_mem;
> +/delete-node/ &tz_mem;
> +
> +/ {
> +	chassis-type = "handset";
> +
> +	qcom,msm-id = <QCOM_ID_SM7125 0>;
> +
> +	chosen {
> +		#address-cells = <2>;
> +		#size-cells = <2>;
> +		ranges;
> +
> +		framebuffer@9c000000 {
> +			compatible = "simple-framebuffer";
> +			reg = <0x0 0x9c000000 0x0 (1080 * 2400 * 4)>;

use memory-region = <&cont_splash_mem>; instead of reg

David

> +			width = <1080>;
> +			height = <2400>;
> +			stride = <(1080 * 4)>;
> +			format = "a8r8g8b8";
> +			clocks = <&gcc GCC_DISP_HF_AXI_CLK>;
> +		};
> +	};
> +
> +	gpio-keys {
> +		compatible = "gpio-keys";
> +
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&key_vol_up_default>, <&hall_sensor_default>;
> +
> +		vol-up {
> +			label = "Volume up";
> +			gpios = <&pm6150l_gpios 8 GPIO_ACTIVE_LOW>;
> +			linux,code = <KEY_VOLUMEUP>;
> +			debounce-interval = <15>;
> +		};
> +
> +		event-hall-sensor {
> +			label = "Hall Effect Sensor";
> +			gpios = <&pm6150_gpios 10 GPIO_ACTIVE_LOW>;
> +			linux,input-type = <EV_SW>;
> +			linux,code = <SW_LID>;
> +			debounce-interval = <15>;
> +		};
> +	};
> +
> +	reserved-memory {
> +		#address-cells = <2>;
> +		#size-cells = <2>;
> +		ranges;
> +
> +		tz_mem: memory@80b00000 {
> +			reg = <0x0 0x80b00000 0x0 0x7100000>;
> +			no-map;
> +		};
> +
> +		mpss_mem: memory@8b000000 {
> +			reg = <0x0 0x8b000000 0x0 0x8900000>;
> +			no-map;
> +		};
> +
> +		wlan_mem: memory@93900000 {
> +			reg = <0x0 0x93900000 0x0 0x200000>;
> +			no-map;
> +		};
> +
> +		ipa_fw_mem: memory@93b00000 {
> +			reg = <0x0 0x93b00000 0x0 0x10000>;
> +			no-map;
> +		};
> +
> +		ipa_gsi_region: memory@93b10000 {
> +			reg = <0x0 0x93b10000 0x0 0x5000>;
> +			no-map;
> +		};
> +
> +		gpu_mem: memory@93b15000 {
> +			reg = <0x0 0x93b15000 0x0 0x2000>;
> +			no-map;
> +		};
> +
> +		adsp_mem: memory@93c00000 {
> +			reg = <0x0 0x93c00000 0x0 0x3e00000>;
> +			no-map;
> +		};
> +
> +		camera_region: memory@97a00000 {
> +			reg = <0x0 0x97a00000 0x0 0x500000>;
> +			no-map;
> +		};
> +
> +		pil_npu_region: memory@97f00000 {
> +			reg = <0x0 0x97f00000 0x0 0x500000>;
> +			no-map;
> +		};
> +
> +		venus_mem: memory@98400000 {
> +			reg = <0x0 0x98400000 0x0 0x500000>;
> +			no-map;
> +		};
> +
> +		cdsp_mem: memory@98900000 {
> +			reg = <0x0 0x98900000 0x0 0x1e00000>;
> +			no-map;
> +		};
> +
> +		cont_splash_mem: memory@9c000000 {
> +			reg = <0x0 0x9c000000 0x0 (1080 * 2400 * 4)>;
> +			no-map;
> +		};
> +

[...]