[PATCH v2 0/3] Add USB DWC3 support for Samsung Exynos8855

[Selvarasu Ganesan <selvarasu.g@samsung.com>]

The Samsung Exynos8855 SoC implements a Synopsys DesignWare USB3 DRD
controller. The DWC3 core on the Exynos8855 is instantiated with the
generic DWC3 platform driver using a flattened model, where the
controller is directly addressable without a separate glue layer.

This is the first Samsung Exynos binding using the flattened
representation and this series adds the device tree binding and platform
driver support for this configuration. The binding follows
qcom,snps-dwc3 pattern, a single node referencing snps,dwc3-common.yaml
for shared DWC3 properties, with per-SoC constraints enforced via
if-then conditionals.

The MAINTAINERS entry is updated first so that the new binding falls
under the existing ARM/Samsung SoC maintainership.

Changes in v2:
- Commit 2/3: Clarify this is the first Samsung Exynos binding using
  the flattened node representation.
- Commit 3/3: Add the compatible entry in alphabetical order in the
  of_match_table.
- Link to v1:
  https://lore.kernel.org/all/20260903071250.3421499-1-selvarasu.g@samsung.com/

Selvarasu Ganesan (3):
  MAINTAINERS: add Samsung USB DT binding to ARM/SAMSUNG entry
  dt-bindings: usb: Introduce samsung,snps-dwc3
  usb: dwc3: Add Exynos8855 to the generic platform driver

 .../bindings/usb/samsung,snps-dwc3.yaml       | 98 +++++++++++++++++++
 MAINTAINERS                                   |  1 +
 drivers/usb/dwc3/dwc3-generic-plat.c          |  5 +-
 3 files changed, 102 insertions(+), 2 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/usb/samsung,snps-dwc3.yaml

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