MikroBUS is an open standard developed by MikroElektronika for connecting add-on boards to microcontrollers or microprocessors. It essentially allows you to easily expand the functionality of your main boards using these add-on boards.
This patchset adds mikroBUS as a Linux bus type and provides a driver to parse and register the mikroBUS board using mikroBUS manifest.
The patchset is based on work originally done by Vaishnav.
Link: https://www.mikroe.com/mikrobus Link: https://docs.beagleboard.org/latest/boards/beagleplay/ Link: https://lore.kernel.org/lkml/20240315184908.500352-1-ayushdevel1325@gmail.co... Patch v3
Changes v4: - Better commit messages - Remove clickID, serdev, pwm, regulator, clocks etc. Just the basic mikroBUS driver. - Fix a lot of memory leaks, unused variables, etc. - Create accompanying PR in Greybus Spec repository - Switch to 80 columns formatting - Some other fixes pointed out in v3
Changes in v3: - Use phandle instead of busname for spi - Use spi board info for registering new device - Convert dt bindings to yaml - Add support for clickID - Code cleanup and style changes - Additions required to spi, serdev, w1 and regulator subsystems
Changes in v2: - support for adding mikroBUS ports from DT overlays, - remove debug sysFS interface for adding mikrobus ports, - consider extended pin usage/deviations from mikrobus standard specifications - use greybus CPort protocol enum instead of new protocol enums - Fix cases of wrong indentation, ignoring return values, freeing allocated resources in case of errors and other style suggestions in v1 review.
Ayush Singh (5): dt-bindings: misc: Add mikrobus-connector spi: Make of_find_spi_controller_by_node() available greybus: Add mikroBUS manifest types mikrobus: Add mikroBUS driver dts: ti: k3-am625-beagleplay: Add mikroBUS
.../connector/mikrobus-connector.yaml | 113 +++ MAINTAINERS | 7 + .../arm64/boot/dts/ti/k3-am625-beagleplay.dts | 80 +- drivers/misc/Kconfig | 1 + drivers/misc/Makefile | 1 + drivers/misc/mikrobus/Kconfig | 15 + drivers/misc/mikrobus/Makefile | 5 + drivers/misc/mikrobus/mikrobus_core.c | 696 ++++++++++++++++++ drivers/misc/mikrobus/mikrobus_core.h | 151 ++++ drivers/misc/mikrobus/mikrobus_manifest.c | 503 +++++++++++++ drivers/misc/mikrobus/mikrobus_manifest.h | 29 + drivers/spi/spi.c | 206 +++--- include/linux/greybus/greybus_manifest.h | 49 ++ include/linux/spi/spi.h | 4 + 14 files changed, 1750 insertions(+), 110 deletions(-) create mode 100644 Documentation/devicetree/bindings/connector/mikrobus-connector.yaml create mode 100644 drivers/misc/mikrobus/Kconfig create mode 100644 drivers/misc/mikrobus/Makefile create mode 100644 drivers/misc/mikrobus/mikrobus_core.c create mode 100644 drivers/misc/mikrobus/mikrobus_core.h create mode 100644 drivers/misc/mikrobus/mikrobus_manifest.c create mode 100644 drivers/misc/mikrobus/mikrobus_manifest.h
base-commit: 61996c073c9b070922ad3a36c981ca6ddbea19a5