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Message-ID: <20250811131055.154233-2-krzysztof.kozlowski@linaro.org>
Date: Mon, 11 Aug 2025 15:10:56 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.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>,
linux-arm-msm@...r.kernel.org,
devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [RFC PATCH v2] arm64: dts: qcom: sm8750-mtp: Add WiFi and Bluetooth
MTP8750 rev 2.0 (power grid v8) boards come as two different variants
with different WiFi chips: WCN7850 and WCN786x. WCN7850 is already
supported by the kernel, but WCN786x is not. Both of the board variants
are considered newest revisions and the difference is only in MCN
numbers and internal codenames.
Add WCN7850 WiFi and Bluetooth to the MTP8750, stating that this DTS
represents the WCN7850 variant. The S4D and S5F regulators should
operate at 0.85 V, thus adjust lower constraint and regulator name.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
Posting as RFC because it depends on unpublished PCI DTS patches thus it
cannot be merged/build.
Changes in v2:
1. Add missing &qupv3_2 enable, so Bluetooth works.
2. Adjust also S4D regulator constraint.
---
arch/arm64/boot/dts/qcom/sm8750-mtp.dts | 133 +++++++++++++++++++++++-
1 file changed, 129 insertions(+), 4 deletions(-)
diff --git a/arch/arm64/boot/dts/qcom/sm8750-mtp.dts b/arch/arm64/boot/dts/qcom/sm8750-mtp.dts
index 57ab028beef4..c25ef6cad9f6 100644
--- a/arch/arm64/boot/dts/qcom/sm8750-mtp.dts
+++ b/arch/arm64/boot/dts/qcom/sm8750-mtp.dts
@@ -254,6 +254,77 @@ vph_pwr: vph-pwr-regulator {
regulator-always-on;
regulator-boot-on;
};
+
+ /*
+ * MTPs rev 2.0 (power grid v8) come with two different WiFi chips:
+ * WCN7850 and WCN786x.
+ * They use the same enable GPIOs and share (almost) the same supplies.
+ * The WCN7850 supplies are superset of WCN786x variant.
+ *
+ * Device nodes here for the PMU, WiFi and Bluetooth describe the MTP
+ * variant with WCN7850.
+ */
+ wcn7850-pmu {
+ compatible = "qcom,wcn7850-pmu";
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&wlan_en>, <&bt_default>;
+
+ wlan-enable-gpios = <&tlmm 16 GPIO_ACTIVE_HIGH>;
+ bt-enable-gpios = <&pm8550ve_f_gpios 3 GPIO_ACTIVE_HIGH>;
+
+ vdd-supply = <&vreg_s5f_0p85>;
+ vddio-supply = <&vreg_l3f_1p8>;
+ vddio1p2-supply = <&vreg_l2f_1p2>;
+ vddaon-supply = <&vreg_s4d_0p85>;
+ vdddig-supply = <&vreg_s1d_0p97>;
+ vddrfa1p2-supply = <&vreg_s7i_1p2>;
+ vddrfa1p8-supply = <&vreg_s3g_1p8>;
+
+ clocks = <&rpmhcc RPMH_RF_CLK1>;
+
+ 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 {
@@ -479,7 +550,7 @@ vreg_s3d_1p2: smps3 {
vreg_s4d_0p85: smps4 {
regulator-name = "vreg_s4d_0p85";
- regulator-min-microvolt = <500000>;
+ regulator-min-microvolt = <852000>;
regulator-max-microvolt = <1036000>;
regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
};
@@ -525,9 +596,9 @@ regulators-2 {
qcom,pmic-id = "f";
- vreg_s5f_0p5: smps5 {
- regulator-name = "vreg_s5f_0p5";
- regulator-min-microvolt = <500000>;
+ vreg_s5f_0p85: smps5 {
+ regulator-name = "vreg_s5f_0p85";
+ regulator-min-microvolt = <852000>;
regulator-max-microvolt = <1000000>;
regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
};
@@ -1047,6 +1118,23 @@ &pcie0_phy {
status = "okay";
};
+&pcieport0 {
+ wifi@0 {
+ compatible = "pci17cb,1107";
+ reg = <0x10000 0x0 0x0 0x0 0x0>;
+
+ vddrfacmn-supply = <&vreg_pmu_rfa_cmn>;
+ vddaon-supply = <&vreg_pmu_aon_0p59>;
+ vddwlcx-supply = <&vreg_pmu_wlcx_0p8>;
+ vddwlmx-supply = <&vreg_pmu_wlmx_0p85>;
+ 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>;
+ };
+};
+
&pmih0108_eusb2_repeater {
status = "okay";
@@ -1063,6 +1151,10 @@ &qupv3_1 {
status = "okay";
};
+&qupv3_2 {
+ status = "okay";
+};
+
&remoteproc_adsp {
firmware-name = "qcom/sm8750/adsp.mbn",
"qcom/sm8750/adsp_dtb.mbn";
@@ -1182,6 +1274,14 @@ spkr_1_sd_n_active: spkr-1-sd-n-active-state {
};
&tlmm {
+ bt_default: bt-default-state {
+ sw-ctrl-pins {
+ pins = "gpio18";
+ function = "gpio";
+ bias-pull-down;
+ };
+ };
+
disp0_reset_n_active: disp0-reset-n-active-state {
pins = "gpio98";
function = "gpio";
@@ -1217,6 +1317,31 @@ wcd_default: wcd-reset-n-active-state {
bias-disable;
output-low;
};
+
+ wlan_en: wlan-en-state {
+ pins = "gpio16";
+ function = "gpio";
+ drive-strength = <8>;
+ bias-pull-down;
+ };
+};
+
+&uart14 {
+ status = "okay";
+
+ bluetooth {
+ compatible = "qcom,wcn7850-bt";
+
+ vddrfacmn-supply = <&vreg_pmu_rfa_cmn>;
+ vddaon-supply = <&vreg_pmu_aon_0p59>;
+ vddwlcx-supply = <&vreg_pmu_wlcx_0p8>;
+ vddwlmx-supply = <&vreg_pmu_wlmx_0p85>;
+ vddrfa0p8-supply = <&vreg_pmu_rfa_0p8>;
+ vddrfa1p2-supply = <&vreg_pmu_rfa_1p2>;
+ vddrfa1p8-supply = <&vreg_pmu_rfa_1p8>;
+
+ max-speed = <3200000>;
+ };
};
&ufs_mem_phy {
--
2.48.1
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