[0/2] SPI bus multiplexing

Message

Chris Packham Jan. 14, 2020, 11:38 p.m. UTC

This is a revisit of two earlier efforts to add more complex mutliplexing to
SPI busses.

https://patchwork.kernel.org/patch/2706151/
https://patchwork.kernel.org/patch/10897255/

This version makes use of the general purpose mux controller which simplifies
things greatly.

Chris Packham (2):
  dt-bindings: spi: Document binding for generic SPI multiplexer
  spi: Add generic SPI multiplexer

 .../devicetree/bindings/spi/spi-mux.yaml      |  82 ++++++++
 drivers/spi/Kconfig                           |  12 ++
 drivers/spi/Makefile                          |   1 +
 drivers/spi/spi-mux.c                         | 189 ++++++++++++++++++
 4 files changed, 284 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/spi/spi-mux.yaml
 create mode 100644 drivers/spi/spi-mux.c