[PATCH v4 0/2] Bluetooth: extend WCN driver to support WCN399x device

[Dmitry Baryshkov]

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.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxxxxxxxx>
---
Changes in v4:
- Rebased on linux-next, fixing the merge conflict.
- Dropped arm64 patches for now, retaining only Bluetooth patches.
- Reordered patches, putting fix in front of the feature patch.
- Link to v3: https://lore.kernel.org/r/20260119-wcn3990-pwrctl-v3-0-948df19f5ec2@xxxxxxxxxxxxxxxx

Changes in v3:
- Dropped patches accepted by maintainers
- Changed ath10k to call pwrseq_power_on() unconditionally (Jeff)
- Added copyright headers to the changed ath10k files (Jeff)
- Link to v2: https://lore.kernel.org/r/20260106-wcn3990-pwrctl-v2-0-0386204328be@xxxxxxxxxxxxxxxx

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@xxxxxxxxxxxxxxxx

---
Dmitry Baryshkov (2):
      Bluetooth: qca: fix ROM version reading on WCN3998 chips
      Bluetooth: qca: enable pwrseq support for WCN39xx devices

 drivers/bluetooth/btqca.c   |  2 ++
 drivers/bluetooth/hci_qca.c | 26 ++++++++++++++++++--------
 2 files changed, 20 insertions(+), 8 deletions(-)
---
base-commit: a0ae2a256046c0c5d3778d1a194ff2e171f16e5f
change-id: 20251229-wcn3990-pwrctl-cfa64f9d8167

Best regards,
-- 
With best wishes
Dmitry