[PATCH v3 0/3] Add support for the REFGEN in the IPQ9650 SoC

[Kathiravan Thirumoorthy]

IPQ9650 SoC has 2 REFGEN blocks providing the reference current to
the PCIe and USB, UNIPHY PHYs. For the other SoCs, clocks for this block
is enabled on power up but that's not the case for IPQ9650 and we have
to explicitly enable those clocks.

Document the same and add support for it.

Correct the regulator type to REGULATOR_CURRENT, as the REFGEN block
supplies the reference current to PHYs in the SoC, per the REFGEN IP
team, aligning it with the hardware behavior.

Signed-off-by: Kathiravan Thirumoorthy <kathiravan.thirumoorthy@xxxxxxxxxxxxxxxx>
---
Changes in v3:
- Pick up the R-b tags
- Use the lower case hex number in patch 2
- Document the IPQ9650 compatible as separate one not as a fallback and
  move the allOf block after the 'required:' section
- Link to v2: https://patch.msgid.link/20260611-ipq9650_refgen-v2-0-d96a91d5b99e@xxxxxxxxxxxxxxxx

Changes in v2:
- New patch 1/3 - change the regulator type to align with HW behavior
- Add the constraints for clock and clock-names property in the binding
- Read the REFGEN_STATUS register to find out the regulator is enabled
- Dropped the unused slab.h
- Link to v1: https://patch.msgid.link/20260602-ipq9650_refgen-v1-0-55e2afa5ff64@xxxxxxxxxxxxxxxx

To: Liam Girdwood <lgirdwood@xxxxxxxxx>
To: Mark Brown <broonie@xxxxxxxxxx>
To: Rob Herring <robh@xxxxxxxxxx>
To: Krzysztof Kozlowski <krzk+dt@xxxxxxxxxx>
To: Conor Dooley <conor+dt@xxxxxxxxxx>
To: Konrad Dybcio <konradybcio@xxxxxxxxxx>
Cc: linux-arm-msm@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Cc: devicetree@xxxxxxxxxxxxxxx

---
Kathiravan Thirumoorthy (3):
      regulator: qcom-refgen: correct the regulator type to CURRENT
      regulator: dt-bindings: qcom,sdm845-refgen-regulator: Document IPQ9650
      regulator: qcom-refgen: add support for the IPQ9650 SoC

 .../regulator/qcom,sdm845-refgen-regulator.yaml    | 31 +++++++-
 drivers/regulator/qcom-refgen-regulator.c          | 93 ++++++++++++++++++++--
 2 files changed, 115 insertions(+), 9 deletions(-)
---
base-commit: c425609d6ac4012c8bbf01ec2e10e801b1923a7b
change-id: 20260520-ipq9650_refgen-196b570d8bc0

Best regards,
--  
Kathiravan Thirumoorthy <kathiravan.thirumoorthy@xxxxxxxxxxxxxxxx>