arm64: dts: qcom: sdm845-db845c: 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.

Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260106-wcn3990-pwrctl-v2-13-0386204328be@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

diff --git a/arch/arm64/boot/dts/qcom/sdm845-db845c.dts b/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
index 5118b776a9bb37d262b7e73d3da7abe234922d7e..02416812b6a7f94ca6113a8e2fd7ae5e12c05711 100644 (file)
--- a/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
+++ b/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
@@ -276,6 +276,43 @@
 
                vin-supply = <&vbat_som>;
        };
+
+       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 {
@@ -659,6 +696,14 @@
                qcom,drive-strength = <PMIC_GPIO_STRENGTH_HIGH>;
        };
 
+       sw_ctrl_default: sw-ctrl-default-state {
+               pins = "gpio3";
+               function = "normal";
+
+               input-enable;
+               bias-pull-down;
+       };
+
        vol_up_pin_a: vol-up-active-state {
                pins = "gpio6";
                function = "normal";
@@ -1038,10 +1083,11 @@
        bluetooth {
                compatible = "qcom,wcn3990-bt";
 
-               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>;
        };
 };
@@ -1155,16 +1201,19 @@
 };
 
 &wifi {
-       status = "okay";
-
+       /* SoC */
        vdd-0.8-cx-mx-supply = <&vreg_l5a_0p8>;
-       vdd-1.8-xo-supply = <&vreg_l7a_1p8>;
-       vdd-1.3-rfa-supply = <&vreg_l17a_1p3>;
-       vdd-3.3-ch0-supply = <&vreg_l25a_3p3>;
-       vdd-3.3-ch1-supply = <&vreg_l23a_3p3>;
+
+       /* 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>;
+       vdd-3.3-ch1-supply = <&vreg_pmu_ch1>;
 
        qcom,snoc-host-cap-8bit-quirk;
        qcom,calibration-variant = "Thundercomm_DB845C";
+
+       status = "okay";
 };
 
 /* PINCTRL - additions to nodes defined in sdm845.dtsi */