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Message-Id: <20250624-slim7x-bt-v3-1-7ada18058419@oldschoolsolutions.biz>
Date: Tue, 24 Jun 2025 08:46:00 +0200
From: Jens Glathe via B4 Relay <devnull+jens.glathe.oldschoolsolutions.biz@...nel.org>
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>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, Stephan Gerhold <stephan.gerhold@...aro.org>,
Anthony Ruhier <aruhier@...lbox.org>,
Jens Glathe <jens.glathe@...schoolsolutions.biz>
Subject: [PATCH v3] arm64: dts: qcom: x1e80100-lenovo-yoga-slim7x: add
Bluetooth support
From: Jens Glathe <jens.glathe@...schoolsolutions.biz>
To enable Bluetooth pwrseq appears to be required for the WCN7850.
Add the nodes from QCP, add the TODO hint for vreg_wcn_0p95 and
vreg_wcn_1p9
Add uart14 for the BT interface.
Tested-by: Anthony Ruhier <aruhier@...lbox.org>
Signed-off-by: Jens Glathe <jens.glathe@...schoolsolutions.biz>
---
This patch adds the Bluetooth support for the WCN7850 card on this laptop.
Since WCN7850 is supposed to need pwrseq, also added this from the QCP.
This is also part of my tree [1] for the Yoga Slim 7X.
definition for the pwrseq and regulators.
[1] https://github.com/jglathe/linux_ms_dev_kit/blob/jg/ubuntu-qcom-x1e-6.15.0-jg-6/arch/arm64/boot/dts/qcom/x1e80100-lenovo-yoga-slim7x.dts
---
Changes in v3:
- pwrseq: add the TODO hint for vreg_wcn_0p95 and vreg_wcn_1p9 (Stephan)
- Link to v2: https://lore.kernel.org/r/20250610-slim7x-bt-v2-1-0dcd9d6576e9@oldschoolsolutions.biz
Changes in v2:
- rebased to next-20250610
- added tested-by from Anthony Ruhier
- Link to v1: https://lore.kernel.org/r/20250426-slim7x-bt-v1-1-d68f961af886@oldschoolsolutions.biz
---
.../boot/dts/qcom/x1e80100-lenovo-yoga-slim7x.dts | 143 +++++++++++++++++++++
1 file changed, 143 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/x1e80100-lenovo-yoga-slim7x.dts b/arch/arm64/boot/dts/qcom/x1e80100-lenovo-yoga-slim7x.dts
index dad0f11e8e8583df6fd8aeec5be2af86739d85fb..d02f8d4f7baf0a8e7c1bb95cd4a84ffe24ba8ef1 100644
--- a/arch/arm64/boot/dts/qcom/x1e80100-lenovo-yoga-slim7x.dts
+++ b/arch/arm64/boot/dts/qcom/x1e80100-lenovo-yoga-slim7x.dts
@@ -18,6 +18,7 @@ / {
aliases {
serial0 = &uart21;
+ serial1 = &uart14;
};
chosen {
@@ -404,6 +405,107 @@ vph_pwr: regulator-vph-pwr {
regulator-always-on;
regulator-boot-on;
};
+
+ vreg_wcn_3p3: regulator-wcn-3p3 {
+ compatible = "regulator-fixed";
+
+ regulator-name = "VREG_WCN_3P3";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+
+ gpio = <&tlmm 214 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+
+ pinctrl-0 = <&wcn_sw_en>;
+ pinctrl-names = "default";
+
+ regulator-boot-on;
+ };
+
+ /*
+ * TODO: These two regulators are actually part of the removable M.2
+ * card and not the CRD mainboard. Need to describe this differently.
+ * Functionally it works correctly, because all we need to do is to
+ * turn on the actual 3.3V supply above.
+ */
+ vreg_wcn_0p95: regulator-wcn-0p95 {
+ compatible = "regulator-fixed";
+
+ regulator-name = "VREG_WCN_0P95";
+ regulator-min-microvolt = <950000>;
+ regulator-max-microvolt = <950000>;
+
+ vin-supply = <&vreg_wcn_3p3>;
+ };
+
+ vreg_wcn_1p9: regulator-wcn-1p9 {
+ compatible = "regulator-fixed";
+
+ regulator-name = "VREG_WCN_1P9";
+ regulator-min-microvolt = <1900000>;
+ regulator-max-microvolt = <1900000>;
+
+ vin-supply = <&vreg_wcn_3p3>;
+ };
+
+ wcn7850-pmu {
+ compatible = "qcom,wcn7850-pmu";
+
+ vdd-supply = <&vreg_wcn_0p95>;
+ vddio-supply = <&vreg_l15b_1p8>;
+ vddaon-supply = <&vreg_wcn_0p95>;
+ vdddig-supply = <&vreg_wcn_0p95>;
+ vddrfa1p2-supply = <&vreg_wcn_1p9>;
+ vddrfa1p8-supply = <&vreg_wcn_1p9>;
+
+ wlan-enable-gpios = <&tlmm 117 GPIO_ACTIVE_HIGH>;
+ bt-enable-gpios = <&tlmm 116 GPIO_ACTIVE_HIGH>;
+
+ pinctrl-0 = <&wcn_wlan_bt_en>;
+ pinctrl-names = "default";
+
+ regulators {
+ vreg_pmu_rfa_cmn: ldo0 {
+ regulator-name = "vreg_pmu_rfa_cmn";
+ };
+
+ vreg_pmu_aon_0p59: ldo1 {
+ regulator-name = "vreg_pmu_aon_0p59";
+ };
+
+ vreg_pmu_wlcx_0p8: ldo2 {
+ regulator-name = "vreg_pmu_wlcx_0p8";
+ };
+
+ vreg_pmu_wlmx_0p85: ldo3 {
+ regulator-name = "vreg_pmu_wlmx_0p85";
+ };
+
+ vreg_pmu_btcmx_0p85: ldo4 {
+ regulator-name = "vreg_pmu_btcmx_0p85";
+ };
+
+ vreg_pmu_rfa_0p8: ldo5 {
+ regulator-name = "vreg_pmu_rfa_0p8";
+ };
+
+ vreg_pmu_rfa_1p2: ldo6 {
+ regulator-name = "vreg_pmu_rfa_1p2";
+ };
+
+ vreg_pmu_rfa_1p8: ldo7 {
+ regulator-name = "vreg_pmu_rfa_1p8";
+ };
+
+ vreg_pmu_pcie_0p9: ldo8 {
+ regulator-name = "vreg_pmu_pcie_0p9";
+ };
+
+ vreg_pmu_pcie_1p8: ldo9 {
+ regulator-name = "vreg_pmu_pcie_1p8";
+ };
+ };
+ };
};
&apps_rsc {
@@ -1045,6 +1147,16 @@ &pcie4_port0 {
wifi@0 {
compatible = "pci17cb,1107";
reg = <0x10000 0x0 0x0 0x0 0x0>;
+
+ vddaon-supply = <&vreg_pmu_aon_0p59>;
+ vddwlcx-supply = <&vreg_pmu_wlcx_0p8>;
+ vddwlmx-supply = <&vreg_pmu_wlmx_0p85>;
+ vddrfacmn-supply = <&vreg_pmu_rfa_cmn>;
+ vddrfa0p8-supply = <&vreg_pmu_rfa_0p8>;
+ vddrfa1p2-supply = <&vreg_pmu_rfa_1p2>;
+ vddrfa1p8-supply = <&vreg_pmu_rfa_1p8>;
+ vddpcie0p9-supply = <&vreg_pmu_pcie_0p9>;
+ vddpcie1p8-supply = <&vreg_pmu_pcie_1p8>;
};
};
@@ -1403,6 +1515,37 @@ usb2_pwr_3p3_reg_en: usb2-pwr-3p3-reg-en-state {
drive-strength = <2>;
bias-disable;
};
+
+ wcn_sw_en: wcn-sw-en-state {
+ pins = "gpio214";
+ function = "gpio";
+ drive-strength = <2>;
+ bias-disable;
+ };
+
+ wcn_wlan_bt_en: wcn-wlan-bt-en-state {
+ pins = "gpio116", "gpio117";
+ function = "gpio";
+ drive-strength = <2>;
+ bias-disable;
+ };
+};
+
+&uart14 {
+ status = "okay";
+
+ bluetooth {
+ compatible = "qcom,wcn7850-bt";
+ max-speed = <3200000>;
+
+ vddaon-supply = <&vreg_pmu_aon_0p59>;
+ vddwlcx-supply = <&vreg_pmu_wlcx_0p8>;
+ vddwlmx-supply = <&vreg_pmu_wlmx_0p85>;
+ vddrfacmn-supply = <&vreg_pmu_rfa_cmn>;
+ vddrfa0p8-supply = <&vreg_pmu_rfa_0p8>;
+ vddrfa1p2-supply = <&vreg_pmu_rfa_1p2>;
+ vddrfa1p8-supply = <&vreg_pmu_rfa_1p8>;
+ };
};
&uart21 {
---
base-commit: f817b6dd2b62d921a6cdc0a3ac599cd1851f343c
change-id: 20250426-slim7x-bt-6d01127291d1
Best regards,
--
Jens Glathe <jens.glathe@...schoolsolutions.biz>
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