[PATCH v3 0/4] phy: qcom-mipi-csi2: Add D-PHY support for sa8775p, qcs8300 and sc7280

[Anusha Arun Nandi <anusha.nandi@oss.qualcomm.com>]

This series extends the generic Qualcomm MIPI CSI2 PHY driver
(drivers/phy/qualcomm/phy-qcom-mipi-csi2-*) with three additional
CSIPHY variants: SA8775P, QCS8300 and SC7280. The driver currently
only supports x1e80100; these SoCs let CAMSS consume the CSIPHY through
the common PHY framework instead of the CSIPHY logic embedded in the
legacy in-tree CAMSS driver.

QCS8300 shares the same CSIPHY D-PHY hardware as SA8775P, so it does
not need its own of_device_id entry: the qcom,csi2-phy.yaml binding
declares "qcom,sa8775p-csi2-phy" as QCS8300's fallback compatible, and
QCS8300 CSIPHY nodes bind through patch 3's existing
"qcom,sa8775p-csi2-phy" match entry.

Tested on sa8775p, qcs8300 and sc7280.

Changes in v3:
- Patch 1 (binding): renamed vdda-phy-supply/vdda-pll-supply to
  vdda-hs-supply/vdda-lp-supply, and restored the DPHY split-mode
  port@0 definition (two endpoints, lane-count constraint) that was
  dropped from the combined schema, cloning it from
  qcom,x1e80100-csi2-phy.yaml instead.
- Dropped "phy: qcom-mipi-csi2: Make timer and OPP clock names
  configurable": no SoC this driver supports actually needs different
  clock names, so the patch had no real effect.
- Patch 2 ("Make OPP table optional") no longer depends on the
  dropped patch's configurable opp_clk_name field; it now adds a
  plain no_opp bool instead, with "timer"/"core" kept as hardcoded
  literals.
- Patches 3 and 4 (sa8775p, sc7280) dropped their now-unnecessary
  timer_clk_name/opp_clk_name overrides, and renamed their
  vdda-phy/vdda-pll supplies to vdda-hs/vdda-lp to match patch 1.

Link to v2: https://lore.kernel.org/all/20261103214105.3605181-1-anusha.nandi@oss.qualcomm.com/

Changes in v2:
- Dropped "phy: qcom-mipi-csi2: fix -EEXIST probe failure on single
  power-domain SoCs" from this series; posted standalone instead,
  renamed to "Add support for single power-domain SoCs" since it adds
  a case rather than fixing a bug.
- Squashed the standalone qcom,sa8775p-csi2-phy.yaml/qcom,qcs8300 enum
  addition/qcom,sc7280-csi2-phy.yaml schemas into one shared
  qcom,csi2-phy.yaml, modelled as a oneOf compatible list instead of
  one file per SoC.
- Dropped the standalone "qcom,qcs8300-csi2-phy" of_device_id entry;
  QCS8300 now binds through the sa8775p match entry via the binding's
  fallback compatible instead, since the two SoCs are fully hardware
  compatible.
- Squashed the separate "Add qcs8300 CSI2 PHY support" patch into
  "Add sa8775p D-PHY support" to match.

Link to v1: https://lore.kernel.org/all/20261016235502.2274268-1-anusha.nandi@oss.qualcomm.com/

Anusha Arun Nandi (4):
  dt-bindings: phy: qcom: Add common qcom,csi2-phy
  phy: qcom-mipi-csi2: Make OPP table optional
  phy: qcom-mipi-csi2: Add sa8775p D-PHY support
  phy: qcom-mipi-csi2: Add sc7280 D-PHY provider

 .../bindings/phy/qcom,csi2-phy.yaml           | 201 +++++++++++++++
 .../qualcomm/phy-qcom-mipi-csi2-3ph-dphy.c    | 228 +++++++++++++++++-
 .../phy/qualcomm/phy-qcom-mipi-csi2-core.c    |  74 +++---
 drivers/phy/qualcomm/phy-qcom-mipi-csi2.h     |   5 +
 4 files changed, 474 insertions(+), 34 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/phy/qcom,csi2-phy.yaml
 
Best regards,
-- 
Anusha Arun Nandi <anusha.nandi@oss.qualcomm.com>
-- 
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2.34.1