[PATCH v2 0/3] arm64: dts: qcom: sm7125-samsung: add initial device tree for SM7125 Samsung platform

[PATCH v2 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>
---
Changes in v2:
- Renamed regulator nodes to satisfy dtbs_check.
- Renamed pin configurations for SD card to satisfy dtbs_check.
- Moved rmtfs_mem to the common dtsi, shifted addresses 0x1000 to the
  left and added "qcom,use-guard-pages".
- Converted decimal 0 to hex 0x0 where applicable.
- Pinctrl names are now listed after pinctrl themselves.
- Renamed vol-up to button-vol-up to satisfy dtbs_check.
- Framebuffer uses cont_splash_mem instead of retyping reg.
- Removed pinctrl-names from vibrator.
- Added a blank line at the top to the comment for &pm6150_pon
- Added a comment explaining what the reserved gpio ranges are.
- Added a blank line before "status = "okay"" where applicable.
- Link to v1: https://patch.msgid.link/20260703-sm7125-samsung-v1-0-3e5f752048c1@gmail.com

To: Bjorn Andersson <andersson@kernel.org>
To: Konrad Dybcio <konradybcio@kernel.org>
To: Rob Herring <robh@kernel.org>
To: Krzysztof Kozlowski <krzk+dt@kernel.org>
To: Conor Dooley <conor+dt@kernel.org>
To: Bartosz Golaszewski <brgl@kernel.org>
To: Kees Cook <kees@kernel.org>
To: Tony Luck <tony.luck@intel.com>
To: "Guilherme G. Piccoli" <gpiccoli@igalia.com>
Cc: linux-arm-msm@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org

---
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   |  20 +
 arch/arm64/boot/dts/qcom/sm7125-samsung-a72q.dts   |  20 +
 .../arm64/boot/dts/qcom/sm7125-samsung-common.dtsi | 536 +++++++++++++++++++++
 drivers/firmware/qcom/qcom_tzmem.c                 |   1 +
 6 files changed, 581 insertions(+)
---
base-commit: 2b763db0c2763d6bf73d7d3e69665222d1f377cf
change-id: 20260627-sm7125-samsung-b685d8b9cd40

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

[PATCH v2 1/3] dt-bindings: arm: qcom: Document Samsung Galaxy A52/A72

[Erikas Bitovtas]

Add compatibles for Samsung Galaxy A52 and A72.

Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
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 9df4074bb582..45f35141bd30 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 v2 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>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
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 v2 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   |  20 +
 arch/arm64/boot/dts/qcom/sm7125-samsung-a72q.dts   |  20 +
 .../arm64/boot/dts/qcom/sm7125-samsung-common.dtsi | 536 +++++++++++++++++++++
 4 files changed, 578 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
index 1c857bd7991b..abf23bdce7fe 100644
--- a/arch/arm64/boot/dts/qcom/Makefile
+++ b/arch/arm64/boot/dts/qcom/Makefile
@@ -345,6 +345,8 @@ 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..97c19b6a0277
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/sm7125-samsung-a52q.dts
@@ -0,0 +1,20 @@
+// 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>;
+};
+
+&rmtfs_mem {
+	reg = <0x0 0xf4f00000 0x0 0x202000>;
+};
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..71af8cc66fd1
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/sm7125-samsung-a72q.dts
@@ -0,0 +1,20 @@
+// 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>;
+};
+
+&rmtfs_mem {
+	reg = <0x0 0xf3700000 0x0 0x202000>;
+};
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..512a151fbff9
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/sm7125-samsung-common.dtsi
@@ -0,0 +1,536 @@
+// 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 0x0>;
+
+	chosen {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		framebuffer@9c000000 {
+			compatible = "simple-framebuffer";
+			memory-region = <&cont_splash_mem>;
+			width = <1080>;
+			height = <2400>;
+			stride = <(1080 * 4)>;
+			format = "a8r8g8b8";
+			clocks = <&gcc GCC_DISP_HF_AXI_CLK>;
+		};
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		pinctrl-0 = <&key_vol_up_default>, <&hall_sensor_default>;
+		pinctrl-names = "default";
+
+		button-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>;
+		};
+
+		rmtfs_mem: memory {
+			compatible = "qcom,rmtfs-mem";
+			qcom,use-guard-pages;
+			no-map;
+
+			qcom,client-id = <1>;
+			qcom,vmid = <QCOM_SCM_VMID_MSS_MSA>;
+		};
+	};
+
+	vibrator {
+		compatible = "gpio-vibrator";
+		enable-gpios = <&tlmm 57 GPIO_ACTIVE_HIGH>;
+	};
+};
+
+&apps_rsc {
+	regulators-0 {
+		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>;
+		};
+	};
+
+	regulators-1 {
+		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 its 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 {
+	vmmc-supply = <&vreg_l9c_2p95>;
+	vqmmc-supply = <&vreg_l6c_3p0>;
+	cd-gpios = <&tlmm 69 GPIO_ACTIVE_LOW>;
+	pinctrl-0 = <&sdc2_on>;
+	pinctrl-1 = <&sdc2_off>;
+	pinctrl-names = "default", "sleep";
+
+	status = "okay";
+};
+
+&tlmm {
+	gpio-reserved-ranges = <59 4>; /* Fingerprint sensor SPI */
+
+	sdc2_on: sdc2-on-state {
+		clk-pins {
+			pins = "sdc2_clk";
+			bias-disable;
+			drive-strength = <16>;
+		};
+
+		cmd-pins {
+			pins = "sdc2_cmd";
+			bias-pull-up;
+			drive-strength = <10>;
+		};
+
+		data-pins {
+			pins = "sdc2_data";
+			bias-pull-up;
+			drive-strength = <10>;
+		};
+
+		sd-cd-pins {
+			pins = "gpio69";
+			function = "gpio";
+			bias-pull-up;
+			drive-strength = <2>;
+		};
+	};
+
+	sdc2_off: sdc2-off-state {
+		clk-pins {
+			pins = "sdc2_clk";
+			bias-disable;
+			drive-strength = <2>;
+		};
+
+		cmd-pins {
+			pins = "sdc2_cmd";
+			bias-pull-up;
+			drive-strength = <2>;
+		};
+
+		data-pins {
+			pins = "sdc2_data";
+			bias-pull-up;
+			drive-strength = <2>;
+		};
+
+		sd-cd-pins {
+			pins = "gpio69";
+			function = "gpio";
+			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 v2 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] Missing explicit `#include <dt-bindings/input/linux-event-codes.h>` (or `input.h`), relying on fragile transitive inclusion for input macros (`KEY_VOLUMEUP`, `KEY_VOLUMEDOWN`, `EV_SW`, `SW_LID`).
- [Low] The `rmtfs_mem` node is defined without a unit-address but receives a `reg` property in board-specific files, causing a `unit_address_vs_reg` DTC warning.
--

commit 50b01ca3bfe2c4df6217b51c5cea041f5fa4dfb9
Author: Erikas Bitovtas <xerikasxx@gmail.com>

arm64: dts: qcom: sm7125-samsung: add initial device tree

This patch adds the initial device tree support for the Samsung Galaxy A52
and A72 on the Qualcomm SM7125 platform.

> 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..512a151fbff93
> --- /dev/null
> +++ b/arch/arm64/boot/dts/qcom/sm7125-samsung-common.dtsi
> @@ -0,0 +1,536 @@
> +// 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"

[Severity: Low]
Does this file need to explicitly include <dt-bindings/input/linux-event-codes.h>?

The gpio-keys and pm6150_resin nodes use input event macros like KEY_VOLUMEUP,
SW_LID, and EV_SW further down in the file. Relying on transitive includes
can cause build failures if the included files are refactored in the future.

[ ... ]
> +		pstore_mem: ramoops@b4600000 {
> +			compatible = "ramoops";
> +			reg = <0x0 0xb4600000 0x0 0x100000>;
> +			record-size = <0x40000>;
> +			console-size = <0x40000>;
> +			ftrace-size = <0x40000>;
> +			pmsg-size = <0x40000>;
> +		};
> +
> +		rmtfs_mem: memory {
> +			compatible = "qcom,rmtfs-mem";
> +			qcom,use-guard-pages;
> +			no-map;
> +
> +			qcom,client-id = <1>;
> +			qcom,vmid = <QCOM_SCM_VMID_MSS_MSA>;
> +		};
> +	};

[Severity: Low]
Does defining the base node without a unit-address here cause a warning
when board-specific files append the reg property?

For example, in sm7125-samsung-a52q.dts:

&rmtfs_mem {
	reg = <0x0 0xf4f00000 0x0 0x202000>;
};

Injecting a reg property into a node named "memory" (without an @address
suffix) usually triggers a unit_address_vs_reg dtc warning during compilation.
Should the base node be given a unit-address placeholder to avoid this?

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/20260705-sm7125-samsung-v2-0-d3b17005ecb3@gmail.com?part=3

Re: [PATCH v2 3/3] arm64: dts: qcom: sm7125-samsung: add initial device tree

[David Heidelberg]

On 05/07/2026 12:30, 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   |  20 +
>   arch/arm64/boot/dts/qcom/sm7125-samsung-a72q.dts   |  20 +
>   .../arm64/boot/dts/qcom/sm7125-samsung-common.dtsi | 536 +++++++++++++++++++++
>   4 files changed, 578 insertions(+)
> 

Nice,

Reviewed-by: David Heidelberg <david@ixit.cz>

small nitpick, the Copyright inside the files should be yours, at least unless 
you giving up your contributions or you been paid by LF ;-) .

David

Re: [PATCH v2 1/3] dt-bindings: arm: qcom: Document Samsung Galaxy A52/A72

[Krzysztof Kozlowski]

On Sun, Jul 05, 2026 at 01:30:27PM +0300, Erikas Bitovtas wrote:
> Add compatibles for Samsung Galaxy A52 and A72.
> 
> Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
> Signed-off-by: Erikas Bitovtas <xerikasxx@gmail.com>
> ---
>  Documentation/devicetree/bindings/arm/qcom.yaml | 2 ++
>  1 file changed, 2 insertions(+)

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>

Best regards,
Krzysztof