[PATCH 0/2] mfd: qcom-pm8008: support PMICs with no interrupt line

[Oleg Keri <okerixx@gmail.com>]

The camera PMIC on the Lenovo Yoga Slim 7x Gen 11 (Qualcomm Snapdragon X2
Elite, glymur) has no interrupt line routed on the board. That is not a
wiring omission - the part has no INT pin brought out in this design, and
the sensor resets are driven from TLMM instead.

The part is a PM8010; this board describes it with the qcom,pm8008
compatible, which is what binds the driver touched here.

qcom-pm8008 currently requires an interrupt: the binding marks it required
and the driver fails probe without one, so the PMIC cannot be described at
all on such a board even though everything it provides - the regulators -
works fine without interrupts.

Patch 1 relaxes the binding, patch 2 makes the driver treat the interrupt
as optional and skip the regmap-irq chip when it is absent. Boards that do
wire the interrupt are unaffected.

Tested on a Lenovo Yoga Slim 7x Gen 11 (DMI 83QR, "Yoga Slim 7 14Q8Y11"),
where this PMIC powers an OV08X40 sensor.

The DT change that describes this PMIC is not part of this series; it lands
with the board DTS, which is being upstreamed separately.

Oleg Keri (2):
  dt-bindings: mfd: qcom,pm8008: make the interrupt line optional
  mfd: qcom-pm8008: support PMICs with no interrupt line

 .../devicetree/bindings/mfd/qcom,pm8008.yaml  |  7 +--
 drivers/mfd/qcom-pm8008.c                     | 52 ++++++++++++-------
 2 files changed, 38 insertions(+), 21 deletions(-)

-- 
2.55.0

base-commit: df2908090cda368b01ff43709f51890076c56157