[PATCH v2 00/14] power: sequencing: extend WCN driver to support WCN399x device

Dmitry Baryshkov
2026-01-06T01:01:18Z

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@oss.qualcomm.com>
---
Changes in v2:
- Split the WCN39xx PMU schema from the qcom,qca6390-pmu.yaml
(Krzysztof)
- Expanded the comment in the WiFi driver (Bartosz)
- Changed vddrfa1p3-supply to vddrf-supply.
- Link to v1: https://lore.kernel.org/r/20251231-wcn3990-pwrctl-v1-0-1ff4d6028ad5@oss.qualcomm.com

---
Dmitry Baryshkov (14):
regulator: dt-bindings: qcom,wcn3990-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,wcn3990-pmu.yaml | 100 +++++++++++++++
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 | 54 +++++++-
drivers/net/wireless/ath/ath10k/snoc.h | 2 +
drivers/power/sequencing/pwrseq-qcom-wcn.c | 130 ++++++++++++++++++-
12 files changed, 671 insertions(+), 56 deletions(-)
---
base-commit: f8f97927abf7c12382dddc93a144fc9df7919b77
change-id: 20251229-wcn3990-pwrctl-cfa64f9d8167

Best regards,
--
With best wishes
Dmitry