This series adds a driver for the NXP P3H2x4x family of multiport I3C hub
devices.
This is an MFD driver integrating I3C hub and on-die regulators.
The series introduces:
- Core I3C master enhancements required for hub support
- Generic I3C hub framework
- MFD and regulator drivers for P3H2x4x
- P3H2x4x I3C hub driver built on top of the generic layer
Changes in v8:
- Add compatible in i3c example
- Link to v7: https://lore.kernel.org/linux-i3c/20260319112441.3888957-1-lakshay.piplani@nxp.com/T/#u
Changes in v7:
- Fix kernel-doc warnings across I3C core and hub code
- Rework DT binding schema and examples to pass dt_binding_check
- Update MFD Kconfig to use I3C_OR_I2C
- Convert CONFIG_I3C_HUB to tristate
- Remove unnecessary CONFIG_I2C_SLAVE guards
- Replace custom helpers with find_closest()
- Use devm_regulator_get_enable_optional()
- Link to v6: https://lore.kernel.org/linux-i3c/64c5070c-aa9e-427a-933e-91e168f0510c@kernel.org/T/#u
Changes in v6:
- Update DT binding with vendor-prefixed properties
- Add generic I3C hub support
- Remove generic code from P3H2x4x driver
- Link to v5: https://lore.kernel.org/linux-i3c/20260206120121.856471-1-aman.kumarpandey@nxp.com/T/#u
Changes in v5:
- Update supply naming and descriptions
- Improve MFD Kconfig/Makefile ordering
- Link to v4: https://lore.kernel.org/linux-i3c/20260113114529.1692213-2-aman.kumarpandey@nxp.com/T/#u
Changes in v4:
- Split driver into MFD, regulator and I3C hub parts
- Update I3C master for hub support
- Fix DT binding issues
- Link to v3: https://lore.kernel.org/linux-i3c/20250811-bittern-of-abstract-prestige-aaeda9@kuoka/T/#u
Changes in v3:
- Add MFD support for hub and regulators
- Add regulator integration
- Link to v2: https://lore.kernel.org/linux-i3c/17145d2f-5d07-4939-8381-74e27cde303c@kernel.org/T/#u
Changes in v2:
- Fix DT binding warnings
- Refine DT parsing logic
- Link to v1: https://lore.kernel.org/linux-i3c/822d6dca-b2c6-4439-ade5-219620ebc435@kernel.org/T/#u
Aman Kumar Pandey (6):
i3c: master: Expose the APIs to support I3C hub
i3c: master: Add the APIs to support I3C hub
dt-bindings: i3c: Add NXP P3H2x4x i3c-hub support
mfd: p3h2x4x: Add driver for NXP P3H2x4x i3c hub and on-die regulator
regulator: p3h2x4x: Add driver for on-die regulators in NXP P3H2x4x
i3c hub
i3c: hub: p3h2x4x: Add support for NXP P3H2x4x I3C hub functionality
Lakshay Piplani (1):
i3c: hub: Add support for the I3C interface in the I3C hub
.../devicetree/bindings/i3c/nxp,p3h2840.yaml | 304 ++++++++++++
MAINTAINERS | 15 +
drivers/i3c/Kconfig | 16 +
drivers/i3c/Makefile | 2 +
drivers/i3c/hub.c | 460 ++++++++++++++++++
drivers/i3c/hub/Kconfig | 11 +
drivers/i3c/hub/Makefile | 4 +
drivers/i3c/hub/p3h2840_i3c_hub.h | 334 +++++++++++++
drivers/i3c/hub/p3h2840_i3c_hub_common.c | 351 +++++++++++++
drivers/i3c/hub/p3h2840_i3c_hub_i3c.c | 132 +++++
drivers/i3c/hub/p3h2840_i3c_hub_smbus.c | 422 ++++++++++++++++
drivers/i3c/master.c | 173 ++++++-
drivers/mfd/Kconfig | 13 +
drivers/mfd/Makefile | 1 +
drivers/mfd/p3h2840.c | 125 +++++
drivers/regulator/Kconfig | 10 +
drivers/regulator/Makefile | 1 +
drivers/regulator/p3h2840_i3c_hub_regulator.c | 219 +++++++++
include/linux/i3c/device.h | 1 +
include/linux/i3c/hub.h | 107 ++++
include/linux/i3c/master.h | 10 +
include/linux/mfd/p3h2840.h | 27 +
22 files changed, 2736 insertions(+), 2 deletions(-)
create mode 100644 Documentation/devicetree/bindings/i3c/nxp,p3h2840.yaml
create mode 100644 drivers/i3c/hub.c
create mode 100644 drivers/i3c/hub/Kconfig
create mode 100644 drivers/i3c/hub/Makefile
create mode 100644 drivers/i3c/hub/p3h2840_i3c_hub.h
create mode 100644 drivers/i3c/hub/p3h2840_i3c_hub_common.c
create mode 100644 drivers/i3c/hub/p3h2840_i3c_hub_i3c.c
create mode 100644 drivers/i3c/hub/p3h2840_i3c_hub_smbus.c
create mode 100644 drivers/mfd/p3h2840.c
create mode 100644 drivers/regulator/p3h2840_i3c_hub_regulator.c
create mode 100644 include/linux/i3c/hub.h
create mode 100644 include/linux/mfd/p3h2840.h
--
2.25.1