linux-kernel - [PATCH v4 3/3] arm64: dts: qcom: sc8280xp-x13s: model the PMU of the on-board wcn6855

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Message-ID: <20240930103041.49229-4-brgl@bgdev.pl>
Date: Mon, 30 Sep 2024 12:30:39 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Bjorn Andersson <andersson@...nel.org>,
	Konrad Dybcio <konradybcio@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Kalle Valo <kvalo@...nel.org>
Cc: linux-arm-msm@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
	Steev Klimaszewski <steev@...i.org>
Subject: [PATCH v4 3/3] arm64: dts: qcom: sc8280xp-x13s: model the PMU of the on-board wcn6855

From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>

Add a node for the PMU of the WCN6855 and rework the inputs of the wifi
and bluetooth nodes to consume the PMU's outputs.

With this we can drop the regulator-always-on properties from vreg_s11b
and vreg_s12b as they will now be enabled by the power sequencing
driver.

Tested-by: Steev Klimaszewski <steev@...i.org> # Thinkpad X13s
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
---
 .../qcom/sc8280xp-lenovo-thinkpad-x13s.dts    | 100 +++++++++++++++---
 1 file changed, 86 insertions(+), 14 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts b/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
index 6a28cab97189..7230d5420199 100644
--- a/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
+++ b/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
@@ -400,6 +400,67 @@ usb1_sbu_mux: endpoint {
 			};
 		};
 	};
+
+	wcn6855-pmu {
+		compatible = "qcom,wcn6855-pmu";
+
+		pinctrl-0 = <&bt_default>, <&wlan_en>;
+		pinctrl-names = "default";
+
+		wlan-enable-gpios = <&tlmm 134 GPIO_ACTIVE_HIGH>;
+		bt-enable-gpios = <&tlmm 133 GPIO_ACTIVE_HIGH>;
+
+		vddio-supply = <&vreg_s10b>;
+		vddaon-supply = <&vreg_s12b>;
+		vddpmu-supply = <&vreg_s12b>;
+		vddrfa0p95-supply = <&vreg_s12b>;
+		vddrfa1p3-supply = <&vreg_s11b>;
+		vddrfa1p9-supply = <&vreg_s1c>;
+		vddpcie1p3-supply = <&vreg_s11b>;
+		vddpcie1p9-supply = <&vreg_s1c>;
+
+		regulators {
+			vreg_pmu_rfa_cmn_0p8: ldo0 {
+				regulator-name = "vreg_pmu_rfa_cmn_0p8";
+			};
+
+			vreg_pmu_aon_0p8: ldo1 {
+				regulator-name = "vreg_pmu_aon_0p8";
+			};
+
+			vreg_pmu_wlcx_0p8: ldo2 {
+				regulator-name = "vreg_pmu_wlcx_0p8";
+			};
+
+			vreg_pmu_wlmx_0p8: ldo3 {
+				regulator-name = "vreg_pmu_wlmx_0p8";
+			};
+
+			vreg_pmu_btcmx_0p8: ldo4 {
+				regulator-name = "vreg_pmu_btcmx_0p8";
+			};
+
+			vreg_pmu_pcie_1p8: ldo5 {
+				regulator-name = "vreg_pmu_pcie_1p8";
+			};
+
+			vreg_pmu_pcie_0p9: ldo6 {
+				regulator-name = "vreg_pmu_pcie_0p9";
+			};
+
+			vreg_pmu_rfa_0p8: ldo7 {
+				regulator-name = "vreg_pmu_rfa_0p8";
+			};
+
+			vreg_pmu_rfa_1p2: ldo8 {
+				regulator-name = "vreg_pmu_rfa_1p2";
+			};
+
+			vreg_pmu_rfa_1p7: ldo9 {
+				regulator-name = "vreg_pmu_rfa_1p7";
+			};
+		};
+	};
 };
 
 &apps_rsc {
@@ -426,7 +487,6 @@ vreg_s11b: smps11 {
 			regulator-min-microvolt = <1272000>;
 			regulator-max-microvolt = <1272000>;
 			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
-			regulator-always-on;
 		};
 
 		vreg_s12b: smps12 {
@@ -434,7 +494,6 @@ vreg_s12b: smps12 {
 			regulator-min-microvolt = <984000>;
 			regulator-max-microvolt = <984000>;
 			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
-			regulator-always-on;
 		};
 
 		vreg_l1b: ldo1 {
@@ -927,6 +986,16 @@ wifi@0 {
 		compatible = "pci17cb,1103";
 		reg = <0x10000 0x0 0x0 0x0 0x0>;
 
+		vddrfacmn-supply = <&vreg_pmu_rfa_cmn_0p8>;
+		vddaon-supply = <&vreg_pmu_aon_0p8>;
+		vddwlcx-supply = <&vreg_pmu_wlcx_0p8>;
+		vddwlmx-supply = <&vreg_pmu_wlmx_0p8>;
+		vddpcie1p8-supply = <&vreg_pmu_pcie_1p8>;
+		vddpcie0p9-supply = <&vreg_pmu_pcie_0p9>;
+		vddrfa0p8-supply = <&vreg_pmu_rfa_0p8>;
+		vddrfa1p2-supply = <&vreg_pmu_rfa_1p2>;
+		vddrfa1p8-supply = <&vreg_pmu_rfa_1p7>;
+
 		qcom,ath11k-calibration-variant = "LE_X13S";
 	};
 };
@@ -1258,20 +1327,16 @@ &uart2 {
 	bluetooth {
 		compatible = "qcom,wcn6855-bt";
 
-		vddio-supply = <&vreg_s10b>;
-		vddbtcxmx-supply = <&vreg_s12b>;
-		vddrfacmn-supply = <&vreg_s12b>;
-		vddrfa0p8-supply = <&vreg_s12b>;
-		vddrfa1p2-supply = <&vreg_s11b>;
-		vddrfa1p7-supply = <&vreg_s1c>;
+		vddrfacmn-supply = <&vreg_pmu_rfa_cmn_0p8>;
+		vddaon-supply = <&vreg_pmu_aon_0p8>;
+		vddwlcx-supply = <&vreg_pmu_wlcx_0p8>;
+		vddwlmx-supply = <&vreg_pmu_wlmx_0p8>;
+		vddbtcmx-supply = <&vreg_pmu_btcmx_0p8>;
+		vddrfa0p8-supply = <&vreg_pmu_rfa_0p8>;
+		vddrfa1p2-supply = <&vreg_pmu_rfa_1p2>;
+		vddrfa1p8-supply = <&vreg_pmu_rfa_1p7>;
 
 		max-speed = <3200000>;
-
-		enable-gpios = <&tlmm 133 GPIO_ACTIVE_HIGH>;
-		swctrl-gpios = <&tlmm 132 GPIO_ACTIVE_HIGH>;
-
-		pinctrl-0 = <&bt_default>;
-		pinctrl-names = "default";
 	};
 };
 
@@ -1761,4 +1826,11 @@ reset-pins {
 			bias-disable;
 		};
 	};
+
+	wlan_en: wlan-en-state {
+		pins = "gpio134";
+		function = "gpio";
+		drive-strength = <8>;
+		bias-pull-down;
+	};
 };
-- 
2.30.2