linux-kernel - [PATCH 10/14] arm64: dts: qcom: qrb2210-rb1: describe WiFi/BT properly

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Message-Id: <20251231-wcn3990-pwrctl-v1-10-1ff4d6028ad5@oss.qualcomm.com>
Date: Wed, 31 Dec 2025 01:36:00 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Bartosz Golaszewski <brgl@...nel.org>,
        Marcel Holtmann <marcel@...tmann.org>,
        Luiz Augusto von Dentz <luiz.dentz@...il.com>,
        Jeff Johnson <jjohnson@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>,
        Manivannan Sadhasivam <mani@...nel.org>, Vinod Koul <vkoul@...nel.org>,
        Balakrishna Godavarthi <quic_bgodavar@...cinc.com>,
        Matthias Kaehlcke <mka@...omium.org>
Cc: linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-bluetooth@...r.kernel.org,
        linux-wireless@...r.kernel.org, ath10k@...ts.infradead.org,
        linux-pm@...r.kernel.org, Krzysztof Kozlowski <krzk@...nel.org>
Subject: [PATCH 10/14] arm64: dts: qcom: qrb2210-rb1: describe WiFi/BT
 properly

The onboard WiFi / BT device, WCN3950, has a simple on-chip PMU, which
further spreads generated voltage. Describe the PMU in the device tree.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
---
 arch/arm64/boot/dts/qcom/qrb2210-rb1.dts | 60 +++++++++++++++++++++++++++-----
 1 file changed, 52 insertions(+), 8 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/qrb2210-rb1.dts b/arch/arm64/boot/dts/qcom/qrb2210-rb1.dts
index 1b9ca957a94b..4501bc34357b 100644
--- a/arch/arm64/boot/dts/qcom/qrb2210-rb1.dts
+++ b/arch/arm64/boot/dts/qcom/qrb2210-rb1.dts
@@ -235,6 +235,42 @@ platform {
 			};
 		};
 	};
+
+	wcn3950-pmu {
+		compatible = "qcom,wcn3950-pmu";
+
+		pinctrl-0 = <&sw_ctrl_default>;
+		pinctrl-names = "default";
+
+		vddio-supply = <&pm4125_l15>;
+		vddxo-supply = <&pm4125_l13>;
+		vddrfa1p3-supply = <&pm4125_l10>;
+		vddch0-supply = <&pm4125_l22>;
+
+		swctrl-gpios = <&tlmm 87 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";
+			};
+		};
+	};
 };
 
 &cpu_pd0 {
@@ -679,6 +715,12 @@ lt9611_irq_pin: lt9611-irq-state {
 		bias-disable;
 	};
 
+	sw_ctrl_default: sw-ctrl-default-state {
+		pins = "gpio87";
+		function = "gpio";
+		bias-pull-down;
+	};
+
 	sd_det_in_on: sd-det-in-on-state {
 		pins = "gpio88";
 		function = "gpio";
@@ -714,11 +756,10 @@ &uart3 {
 	bluetooth {
 		compatible = "qcom,wcn3950-bt";
 
-		vddio-supply = <&pm4125_l15>;
-		vddxo-supply = <&pm4125_l13>;
-		vddrf-supply = <&pm4125_l10>;
-		vddch0-supply = <&pm4125_l22>;
-		enable-gpios = <&tlmm 87 GPIO_ACTIVE_HIGH>;
+		vddio-supply = <&vreg_pmu_io>;
+		vddxo-supply = <&vreg_pmu_xo>;
+		vddrf-supply = <&vreg_pmu_rf>;
+		vddch0-supply = <&vreg_pmu_ch0>;
 		max-speed = <3200000>;
 	};
 };
@@ -759,10 +800,13 @@ &venus {
 };
 
 &wifi {
+	/* SoC */
 	vdd-0.8-cx-mx-supply = <&pm4125_l7>;
-	vdd-1.8-xo-supply = <&pm4125_l13>;
-	vdd-1.3-rfa-supply = <&pm4125_l10>;
-	vdd-3.3-ch0-supply = <&pm4125_l22>;
+
+	/* WiFi / BT PMU */
+	vdd-1.8-xo-supply = <&vreg_pmu_xo>;
+	vdd-1.3-rfa-supply = <&vreg_pmu_rf>;
+	vdd-3.3-ch0-supply = <&vreg_pmu_ch0>;
 	qcom,calibration-variant = "Thundercomm_RB1";
 	firmware-name = "qcm2290";
 	status = "okay";

-- 
2.47.3