From fcbee85a521ac4696a3abced017b56ac1b079fb8 Mon Sep 17 00:00:00 2001 From: Wei Deng Date: Wed, 21 Jan 2026 11:37:55 +0530 Subject: [PATCH] WORKAROUND: arm64: dts: qcom: monaco-evk: Remove WCN6855 PMU node to bypass pwrseq flow There is a conflict between the current DTS configuration and the driver behavior for the WCN6855 Bluetooth path. With the PMU node in place, the driver takes the pwrseq code path unintentionally, which leads to Bluetooth failing to power up during an on -> off -> on transition. To unblock function, temporarily remove the WCN6855 PMU node so that the driver follows the non-pwrseq path and avoids the unexpected sequence. This is a TEMPORARY WORKAROUND. Once a proper M.2 binding/solution is upstreamed, will re-submit both DTS and driver changes aligned with the M.2 model. Signed-off-by: Wei Deng --- arch/arm64/boot/dts/qcom/monaco-evk.dts | 73 +++---------------------- 1 file changed, 8 insertions(+), 65 deletions(-) diff --git a/arch/arm64/boot/dts/qcom/monaco-evk.dts b/arch/arm64/boot/dts/qcom/monaco-evk.dts index ace3b3e42d9ef..acf2e7c36f143 100644 --- a/arch/arm64/boot/dts/qcom/monaco-evk.dts +++ b/arch/arm64/boot/dts/qcom/monaco-evk.dts @@ -135,63 +135,6 @@ regulator-boot-on; }; - - wcn6855-pmu { - compatible = "qcom,wcn6855-pmu"; - - vddio-supply = <&vreg_wcn_3p3>; - vddaon-supply = <&vreg_wcn_3p3>; - vddpmu-supply = <&vreg_wcn_3p3>; - vddpmumx-supply = <&vreg_wcn_3p3>; - vddpmucx-supply = <&vreg_wcn_3p3>; - vddrfa0p95-supply = <&vreg_wcn_3p3>; - vddrfa1p3-supply = <&vreg_wcn_3p3>; - vddrfa1p9-supply = <&vreg_wcn_3p3>; - vddpcielp3-supply = <&vreg_wcn_3p3>; - vddpcielp9-supply = <&vreg_wcn_3p3>; - - 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 { @@ -760,14 +703,14 @@ compatible = "qcom,wcn6855-bt"; max-speed = <3200000>; - vddrfacmn-supply = <&vreg_pmu_rfa_cmn>; - vddaon-supply = <&vreg_pmu_aon_0p59>; - vddwlcx-supply = <&vreg_pmu_wlcx_0p8>; - vddwlmx-supply = <&vreg_pmu_wlmx_0p85>; - vddbtcmx-supply = <&vreg_pmu_btcmx_0p85>; - vddrfa0p8-supply = <&vreg_pmu_rfa_0p8>; - vddrfa1p2-supply = <&vreg_pmu_rfa_1p2>; - vddrfa1p8-supply = <&vreg_pmu_rfa_1p8>; + vddrfacmn-supply = <&vreg_wcn_3p3>; + vddaon-supply = <&vreg_wcn_3p3>; + vddwlcx-supply = <&vreg_wcn_3p3>; + vddwlmx-supply = <&vreg_wcn_3p3>; + vddbtcmx-supply = <&vreg_wcn_3p3>; + vddrfa0p8-supply = <&vreg_wcn_3p3>; + vddrfa1p2-supply = <&vreg_wcn_3p3>; + vddrfa1p8-supply = <&vreg_wcn_3p3>; }; };