From: David Heidelberg <david@ixit.cz>
Date: Wed, 15 Apr 2026 11:56:08 +0000 (+0200)
Subject: arm64: dts: qcom: sdm845-shift-axolotl: describe WiFi/BT properly
X-Git-Url: http://git.ipfire.org/gitweb/index.cgi?a=commitdiff_plain;h=487c97b671e4f224adb9d74b9f14372e283bea32;p=thirdparty%2Fkernel%2Flinux.git

arm64: dts: qcom: sdm845-shift-axolotl: describe WiFi/BT properly

The onboard WiFi / BT device, WCN3990, has a simple on-chip PMU, which
further spreads generated voltage. Describe the PMU in the device tree.

Signed-off-by: David Heidelberg <david@ixit.cz>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260415-axolotl-wifi-v1-1-07df39cfc0a4@ixit.cz
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
---

diff --git a/arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts b/arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts
index 14a683ee3823..f21b914f22b5 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts
+++ b/arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts
@@ -105,6 +105,43 @@
 
 		vin-supply = <&vph_pwr>;
 	};
+
+	wcn3990-pmu {
+		compatible = "qcom,wcn3990-pmu";
+
+		pinctrl-0 = <&sw_ctrl_default>;
+		pinctrl-names = "default";
+
+		vddio-supply = <&vreg_s4a_1p8>;
+		vddxo-supply = <&vreg_l7a_1p8>;
+		vddrf-supply = <&vreg_l17a_1p3>;
+		vddch0-supply = <&vreg_l25a_3p3>;
+		vddch1-supply = <&vreg_l23a_3p3>;
+
+		swctrl-gpios = <&pm8998_gpios 3 GPIO_ACTIVE_HIGH>;
+
+		regulators {
+			vreg_pmu_io: ldo0 {
+				regulator-name = "vreg_pmu_io";
+			};
+
+			vreg_pmu_xo: ldo1 {
+				regulator-name = "vreg_pmu_xo";
+			};
+
+			vreg_pmu_rf: ldo2 {
+				regulator-name = "vreg_pmu_rf";
+			};
+
+			vreg_pmu_ch0: ldo3 {
+				regulator-name = "vreg_pmu_ch0";
+			};
+
+			vreg_pmu_ch1: ldo4 {
+				regulator-name = "vreg_pmu_ch1";
+			};
+		};
+	};
 };
 
 &adsp_pas {
@@ -546,6 +583,13 @@
 };
 
 &pm8998_gpios {
+	sw_ctrl_default: sw-ctrl-default-state {
+		pins = "gpio3";
+		function = "normal";
+		input-enable;
+		bias-pull-down;
+	};
+
 	volume_up_gpio: pm8998-gpio6-state {
 		pinconf {
 			pins = "gpio6";
@@ -784,10 +828,11 @@
 		 */
 		firmware-name = "SHIFT/axolotl/crnv21.bin";
 
-		vddio-supply = <&vreg_s4a_1p8>;
-		vddxo-supply = <&vreg_l7a_1p8>;
-		vddrf-supply = <&vreg_l17a_1p3>;
-		vddch0-supply = <&vreg_l25a_3p3>;
+		vddio-supply = <&vreg_pmu_io>;
+		vddxo-supply = <&vreg_pmu_xo>;
+		vddrf-supply = <&vreg_pmu_rf>;
+		vddch0-supply = <&vreg_pmu_ch0>;
+
 		max-speed = <3200000>;
 	};
 };
@@ -842,14 +887,14 @@
 };
 
 &wifi {
-	status = "okay";
-
 	vdd-0.8-cx-mx-supply = <&vreg_l5a_0p8>;
-	vdd-1.3-rfa-supply = <&vreg_l17a_1p3>;
-	vdd-1.8-xo-supply = <&vreg_l7a_1p8>;
-	vdd-3.3-ch0-supply = <&vreg_l25a_3p3>;
-	vdd-3.3-ch1-supply = <&vreg_l23a_3p3>;
+	vdd-1.8-xo-supply = <&vreg_pmu_xo>;
+	vdd-1.3-rfa-supply = <&vreg_pmu_rf>;
+	vdd-3.3-ch0-supply = <&vreg_pmu_ch0>;
+	vdd-3.3-ch1-supply = <&vreg_pmu_ch1>;
 
 	qcom,calibration-variant = "shift_axolotl";
 	qcom,snoc-host-cap-8bit-quirk;
+
+	status = "okay";
 };