linux-kernel - [PATCH 00/14] power: sequencing: extend WCN driver to support WCN399x device

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Message-Id: <20251231-wcn3990-pwrctl-v1-0-1ff4d6028ad5@oss.qualcomm.com>
Date: Wed, 31 Dec 2025 01:35:50 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Bartosz Golaszewski <brgl@...nel.org>,
        Marcel Holtmann <marcel@...tmann.org>,
        Luiz Augusto von Dentz <luiz.dentz@...il.com>,
        Jeff Johnson <jjohnson@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>,
        Manivannan Sadhasivam <mani@...nel.org>, Vinod Koul <vkoul@...nel.org>,
        Balakrishna Godavarthi <quic_bgodavar@...cinc.com>,
        Matthias Kaehlcke <mka@...omium.org>
Cc: linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-bluetooth@...r.kernel.org,
        linux-wireless@...r.kernel.org, ath10k@...ts.infradead.org,
        linux-pm@...r.kernel.org, Krzysztof Kozlowski <krzk@...nel.org>
Subject: [PATCH 00/14] power: sequencing: extend WCN driver to support
 WCN399x device

Qualcomm WCN3950, WCN3988 and WCN399x families of WiFi/BT chips preceed
the later WCN / QCA devices, but they still incorporate a very simple
PMU on die. It controls internal on-chip power networks, but, most
importantly, it also requires a certain start-up procedure (first bring
up VDD_IO, then bring up other voltages). In order to further unify code
supporting different families of QCA / WCN chips and in order to
maintain the required power up sequence, properly represent these chips
in DTs and modify drivers to use power sequencing for these chips.

Backwards compatibility with the existing DTs is retained by keeping the
regulator&clock code in the drivers as a fallback.

As a part of the series I've converted only several boards, verifying
that all known instances of WCN39xx family works (fixing the issues
meanwhile). The rest of devices might follow the pattern later.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
---
Dmitry Baryshkov (14):
      regulator: dt-bindings: qcom,qca6390-pmu: describe PMUs on WCN39xx
      Bluetooth: qca: enable pwrseq support for WCN39xx devices
      Bluetooth: qca: fix ROM version reading on WCN3998 chips
      wifi: ath10k: snoc: support powering on the device via pwrseq
      power: sequencing: qcom-wcn: add support for WCN39xx
      arm64: dts: qcom: qrb4210-rb2: Fix UART3 wakeup IRQ storm
      arm64: dts: qcom: sdm845-db845c: drop CS from SPIO0
      arm64: dts: qcom: sdm845-db845c: specify power for WiFi CH1
      arm64: dts: qcom: sm8150: add uart13
      arm64: dts: qcom: qrb2210-rb1: describe WiFi/BT properly
      arm64: dts: qcom: qrb4210-rb2: describe WiFi/BT properly
      arm64: dts: qcom: sda660-ifc6560: describe WiFi/BT properly
      arm64: dts: qcom: sdm845-db845c: describe WiFi/BT properly
      arm64: dts: qcom: sm8150-hdk: describe WiFi/BT properly

 .../bindings/regulator/qcom,qca6390-pmu.yaml       |  36 ++++++
 arch/arm64/boot/dts/qcom/qrb2210-rb1.dts           |  60 +++++++--
 arch/arm64/boot/dts/qcom/qrb4210-rb2.dts           |  62 +++++++--
 .../arm64/boot/dts/qcom/sda660-inforce-ifc6560.dts |  66 ++++++++--
 arch/arm64/boot/dts/qcom/sdm845-db845c.dts         |  75 +++++++++--
 arch/arm64/boot/dts/qcom/sm8150-hdk.dts            | 141 ++++++++++++++++++++-
 arch/arm64/boot/dts/qcom/sm8150.dtsi               |   9 ++
 drivers/bluetooth/btqca.c                          |   2 +
 drivers/bluetooth/hci_qca.c                        |  26 ++--
 drivers/net/wireless/ath/ath10k/snoc.c             |  43 ++++++-
 drivers/net/wireless/ath/ath10k/snoc.h             |   2 +
 drivers/power/sequencing/pwrseq-qcom-wcn.c         | 130 ++++++++++++++++++-
 12 files changed, 596 insertions(+), 56 deletions(-)
---
base-commit: cc3aa43b44bdb43dfbac0fcb51c56594a11338a8
change-id: 20251229-wcn3990-pwrctl-cfa64f9d8167

Best regards,
-- 
With best wishes
Dmitry