[U-Boot] [PATCH v2 0/4] drivers: Add a framework for MUX drivers

[Jean-Jacques Hiblot]

Add a new minimalistic subsystem that handles multiplexer controllers.
It provides the same API as Linux and mux drivers should be portable with
a minimum effort.
This series also includes a port of the Linux's mmio-mux driver.

This series relies on a series that extend the regmap [1].

[1] : https://patchwork.ozlabs.org/project/uboot/list/?series=140752

Changes in v2:
- Fixed warning in mux_of_xlate_default()
- Improved documentation
- Fixed SPL build
- insert the mux initialization in init_sequence_r[], just before the
console is initialized as its serial port may be muxed
- moved the definition of dm_mux_init() in this commit
- Call sandbox_set_enable_memio(true) before running the test

Jean-Jacques Hiblot (4):
  drivers: Add a new framework for multiplexer devices
  dm: board: complete the initialization of the muxes in initr_dm()
  drivers: mux: mmio-based syscon mux controller
  test: Add tests for the multiplexer framework

 arch/sandbox/dts/test.dts     |  26 +++
 common/board_r.c              |  16 ++
 configs/sandbox_defconfig     |   2 +
 drivers/Kconfig               |   2 +
 drivers/Makefile              |   1 +
 drivers/mux/Kconfig           |  22 +++
 drivers/mux/Makefile          |   7 +
 drivers/mux/mmio.c            | 155 ++++++++++++++++++
 drivers/mux/mux-uclass.c      | 292 ++++++++++++++++++++++++++++++++++
 include/dm/uclass-id.h        |   1 +
 include/dt-bindings/mux/mux.h |  17 ++
 include/mux-internal.h        | 103 ++++++++++++
 include/mux.h                 | 115 +++++++++++++
 test/dm/Makefile              |   1 +
 test/dm/mux-mmio.c            | 147 +++++++++++++++++
 15 files changed, 907 insertions(+)
 create mode 100644 drivers/mux/Kconfig
 create mode 100644 drivers/mux/Makefile
 create mode 100644 drivers/mux/mmio.c
 create mode 100644 drivers/mux/mux-uclass.c
 create mode 100644 include/dt-bindings/mux/mux.h
 create mode 100644 include/mux-internal.h
 create mode 100644 include/mux.h
 create mode 100644 test/dm/mux-mmio.c

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2.17.1