[PATCH v3 0/8] misc: Add mikroBUS driver

Ayush Singh
2024-03-15T18:49:30Z

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 flash mikroBUS manifest and register the mikroBUS board.

The v1 and v2 of this patchset was submitted by Vaishnav M A back in
2020. This patchset also includes changes made over the years as part of
BeagleBoards kernel.

Link: https://www.mikroe.com/mikrobus
Link: https://docs.beagleboard.org/latest/boards/beagleplay/
Link: https://lore.kernel.org/lkml/20200818124815.11029-1-vaishnav@beagleboard.org/ Patch v2

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 (7):
dt-bindings: misc: Add mikrobus-connector
w1: Add w1_find_master_device
spi: Make of_find_spi_controller_by_node() available
regulator: fixed-helper: export regulator_register_always_on
greybus: Add mikroBUS manifest types
mikrobus: Add mikrobus driver
dts: ti: k3-am625-beagleplay: Add mikroBUS

Vaishnav M A (1):
serdev: add of_ helper to get serdev controller

.../bindings/misc/mikrobus-connector.yaml | 110 ++
MAINTAINERS | 7 +
.../arm64/boot/dts/ti/k3-am625-beagleplay.dts | 76 +-
drivers/misc/Kconfig | 1 +
drivers/misc/Makefile | 1 +
drivers/misc/mikrobus/Kconfig | 19 +
drivers/misc/mikrobus/Makefile | 6 +
drivers/misc/mikrobus/mikrobus_core.c | 942 ++++++++++++++++++
drivers/misc/mikrobus/mikrobus_core.h | 201 ++++
drivers/misc/mikrobus/mikrobus_id.c | 229 +++++
drivers/misc/mikrobus/mikrobus_manifest.c | 502 ++++++++++
drivers/misc/mikrobus/mikrobus_manifest.h | 20 +
drivers/regulator/fixed-helper.c | 1 +
drivers/spi/spi.c | 206 ++--
drivers/tty/serdev/core.c | 19 +
drivers/w1/w1.c | 6 +-
drivers/w1/w1_int.c | 27 +
include/linux/greybus/greybus_manifest.h | 49 +
include/linux/serdev.h | 4 +
include/linux/spi/spi.h | 4 +
include/linux/w1.h | 1 +
21 files changed, 2318 insertions(+), 113 deletions(-)
create mode 100644 Documentation/devicetree/bindings/misc/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_id.c
create mode 100644 drivers/misc/mikrobus/mikrobus_manifest.c
create mode 100644 drivers/misc/mikrobus/mikrobus_manifest.h

base-commit: 61996c073c9b070922ad3a36c981ca6ddbea19a5
--
2.44.0