From nobody Thu Apr 2 17:21:41 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 232463E717B; Fri, 27 Mar 2026 13:07:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774616830; cv=none; b=rfc58uVufoDZgPKIqUNW1W9zKm/Mc1K/65nwSaSoFFBihBz3R4S054yvCT5OV0iyWAgu9cx1ly/VWAVfgep+1Se2s4tLegSGRn9x6yiJfn/JM1zsDT08l84RSCVDGoz1NvdlTFRVtc4r2Sirbrq4lTCgqILFQw3blQQ3J/CCofQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774616830; c=relaxed/simple; bh=To8Qup3MXF6u7fIYte72oP+NECphIimOxx4PV03mpZA=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=K8kBCnf84SdaccHvj9tjgGVF320wh+WRtYgwmjma09N5zoKrmbDW0kjWCQDQ9gWAEEBUGpDlj4lgXpgOfohnmP3IXzQKA/8qiLnMsCt1hiKnvzf3cUyiaSoWyAyoAMQyyJdIhBlDOTdIfzUkR3J3Ezbvr/B8usTgTWwySWHXS30= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=rImuipt0; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="rImuipt0" Received: by smtp.kernel.org (Postfix) with ESMTPS id BEBBFC2BC87; Fri, 27 Mar 2026 13:07:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1774616829; bh=To8Qup3MXF6u7fIYte72oP+NECphIimOxx4PV03mpZA=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=rImuipt002pwIfwOaIkXOp1zEJ1STqNeHSJm/JPgQbHJ1r+mjFBB4BScUtYN4e+52 Ssxt+KwFIupvmmyfffhQgpErRLgWhE8Kpjco2fDV6qSwsZkFJYRtcq4CdLH094W2dz yfK0vCU1LSBv+YCl0cJtBMX0QS2Mlm5yot9snb3WWnRk2kH/P3FojcRQmWFpEt3/M+ TTb7tqvG8IEF9keZ+WFkDUWgA6xMMwPzQePl6S3EJSWjTpQlFNMVLGbgQ8T6uB9DbG 5TgNLcioqndTxhC+EYxEk3v31Mlqgei5rTZBO+5hn20rXPP2pojiH7WIyKXKXxyq6W 3BAFn2ukxYDKQ== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id AA88810ED674; Fri, 27 Mar 2026 13:07:09 +0000 (UTC) From: David Heidelberg via B4 Relay Date: Fri, 27 Mar 2026 14:07:08 +0100 Subject: [PATCH RFC 1/2] arm64: dts: qcom: sdm845-google: Describe Wi-Fi/BT properly Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260327-wcn3990-pwrctl-sdm845-v1-1-3f5c34e3fdd0@ixit.cz> References: <20260327-wcn3990-pwrctl-sdm845-v1-0-3f5c34e3fdd0@ixit.cz> In-Reply-To: <20260327-wcn3990-pwrctl-sdm845-v1-0-3f5c34e3fdd0@ixit.cz> To: Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: Paul Sajna , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, David Heidelberg X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=2285; i=david@ixit.cz; h=from:subject:message-id; bh=ZdsZlqRm3/oxciwUtKAmARcIeJyJp34l/WYfXSWVTDk=; b=owEBbQKS/ZANAwAIAWACP8TTSSByAcsmYgBpxoD8X3UHY8pX88+zhKXwHwfDLK4KyevZawF/N WB8LSP1NLOJAjMEAAEIAB0WIQTXegnP7twrvVOnBHRgAj/E00kgcgUCacaA/AAKCRBgAj/E00kg cql4D/0fFQTGC79+QPPPwY4Zs53+E9cFblgQy0wmQmkicMTkYG5vExKjTaarCUaglJ/Xfjw/1jM N6rkezDgcASHcKi+9OWujRB8An1lZzyRORGc4UOhYiM1p0nAI/mavcu24SLQfub6SfEjHVx0VVd 9HxISKgtDUMeLwEmv9gt+WqXNs85ILPrEdedgpGnwjTTdLRM30z2hDLEvF7yZvtM4rpd+cRDHZu PXAcwNCmbO4IDr8CiqjMhdTq3M2gVEJJvhJQvC+LUsHWXesQ/aaUIzWfEHLmVeWrSYMt62rhFlN 6TZhXQR/AgswhvTkqida71CU93U36v9uLyYQdvZLq3+icerOwBx8Em/5Bbw1QLJizJqDGeb6Wyo FoXONlDEhUoUD3CEHJkwUFH7F3lRqTlJXU9ZIJILAoT+EuquxsEG3SvdN90h5GuxYfernAewprc fxzuVxSE+w3+BL6W6VVMstOdoQv8LiE5w7QD0wy3NK6wQwakqtyL1LSnlMje6at1Cf0Ix+d0TFm Otlh6DU8KTmLTBJf5jkDiwiKtZFUlBzkDkjf6M/FSMWsN885ctAKi0tLAjqOveYBwbTg2HC/V1F caIHO8iZhViJvg41o8F8+K42VrhWLx9Lgx4nlFt2ZMh3ADBXRGP/4hNbxjzo3hfQk+dg/TCJ26+ MX3RxiMjtBWhL3A== X-Developer-Key: i=david@ixit.cz; a=openpgp; fpr=D77A09CFEEDC2BBD53A7047460023FC4D3492072 X-Endpoint-Received: by B4 Relay for david@ixit.cz/default with auth_id=355 X-Original-From: David Heidelberg Reply-To: david@ixit.cz From: David Heidelberg The onboard Wi-Fi / BT device, WCN3990, has a simple on-chip PMU, which further spreads generated voltage. Describe the PMU in the device tree and rewire Bluetooth and Wi-Fi supply properties to use the PMU LDO outputs instead of referencing the SoC regulators directly. Couldn't verify the swctrl GPIO thus omitted. Assisted-by: Claude:claude-opus-4.6 Signed-off-by: David Heidelberg Reviewed-by: Dmitry Baryshkov --- arch/arm64/boot/dts/qcom/sdm845-google-common.dtsi | 42 ++++++++++++++++++= ---- 1 file changed, 35 insertions(+), 7 deletions(-) diff --git a/arch/arm64/boot/dts/qcom/sdm845-google-common.dtsi b/arch/arm6= 4/boot/dts/qcom/sdm845-google-common.dtsi index fd9788d5c3f54..6930066857768 100644 --- a/arch/arm64/boot/dts/qcom/sdm845-google-common.dtsi +++ b/arch/arm64/boot/dts/qcom/sdm845-google-common.dtsi @@ -131,6 +131,33 @@ vreg_s4a_1p8: regulator-vreg-s4a-1p8 { =20 vin-supply =3D <&vph_pwr>; }; + + wcn3990-pmu { + compatible =3D "qcom,wcn3990-pmu"; + + vddio-supply =3D <&vreg_s4a_1p8>; + vddxo-supply =3D <&vreg_l7a_1p8>; + vddrf-supply =3D <&vreg_l17a_1p3>; + vddch0-supply =3D <&vreg_l25a_3p3>; + + regulators { + vreg_pmu_io: ldo0 { + regulator-name =3D "vreg_pmu_io"; + }; + + vreg_pmu_xo: ldo1 { + regulator-name =3D "vreg_pmu_xo"; + }; + + vreg_pmu_rf: ldo2 { + regulator-name =3D "vreg_pmu_rf"; + }; + + vreg_pmu_ch0: ldo3 { + regulator-name =3D "vreg_pmu_ch0"; + }; + }; + }; }; =20 &adsp_pas { @@ -462,10 +489,11 @@ &uart6 { bluetooth { compatible =3D "qcom,wcn3990-bt"; =20 - vddio-supply =3D <&vreg_s4a_1p8>; - vddxo-supply =3D <&vreg_l7a_1p8>; - vddrf-supply =3D <&vreg_l17a_1p3>; - vddch0-supply =3D <&vreg_l25a_3p3>; + vddio-supply =3D <&vreg_pmu_io>; + vddxo-supply =3D <&vreg_pmu_xo>; + vddrf-supply =3D <&vreg_pmu_rf>; + vddch0-supply =3D <&vreg_pmu_ch0>; + max-speed =3D <3200000>; }; }; @@ -526,9 +554,9 @@ &venus { =20 &wifi { vdd-0.8-cx-mx-supply =3D <&vreg_l5a_0p8>; - vdd-1.8-xo-supply =3D <&vreg_l7a_1p8>; - vdd-1.3-rfa-supply =3D <&vreg_l17a_1p3>; - vdd-3.3-ch0-supply =3D <&vreg_l25a_3p3>; + vdd-1.8-xo-supply =3D <&vreg_pmu_xo>; + vdd-1.3-rfa-supply =3D <&vreg_pmu_rf>; + vdd-3.3-ch0-supply =3D <&vreg_pmu_ch0>; =20 qcom,snoc-host-cap-8bit-quirk; =20 --=20 2.53.0