[v3,0/9] clk: clocking-wizard: add user clock monitor support

Message

Harry Austen Aug. 26, 2024, 12:38 p.m. UTC

Improve utilised clk/notifier APIs, making use of device managed versions
of functions, make dynamic reconfiguration support optional (because it is
in hardware) and add support for the clock monitor functionality added in
version 6.0 of the Xilinx clocking wizard IP core, through use of the
auxiliary bus and UIO frameworks.

The combined addition of all of these patches allows, for example, to use
the clocking wizard solely for its user clock monitoring logic, keeping
dynamic reconfiguration support disabled.

This is currently untested on hardware, so any help testing this would be
much appreciated!

v2 -> v3:
- Move kernel doc variable comment to bottom in clk_hw transition patch (2)
- Remove extra line (and add Krzysztof's R-b tag) in binding patch (5)
- Add Krzysztof's A-b tag to dynamic reconfig binding patch (8)
v1 -> v2:
- Split and improve clk_hw+devres transition patch (2+3)
- Fix/improve DT binding patches (5+8)
- Utilise auxiliary bus in monitor support patch (6)
- Add dedicated UIO driver for monitor support (7)

Harry Austen (9):
  clk: clocking-wizard: simplify probe/remove with devres helpers
  clk: clocking-wizard: use newer clk_hw API
  clk: clocking-wizard: use devres versions of clk_hw API
  clk: clocking-wizard: move clock registration to separate function
  dt-bindings: clock: xilinx: add description of user monitor interrupt
  clk: clocking-wizard: add user clock monitor support
  uio: add Xilinx user clock monitor support
  dt-bindings: clock: xilinx: describe whether dynamic reconfig is
    enabled
  clk: clocking-wizard: move dynamic reconfig setup behind flag

 .../bindings/clock/xlnx,clocking-wizard.yaml  |  31 +-
 drivers/clk/xilinx/Kconfig                    |   1 +
 drivers/clk/xilinx/clk-xlnx-clock-wizard.c    | 335 +++++++++---------
 drivers/uio/Kconfig                           |   8 +
 drivers/uio/Makefile                          |   1 +
 drivers/uio/uio_xlnx_clk_mon.c                |  71 ++++
 6 files changed, 284 insertions(+), 163 deletions(-)
 create mode 100644 drivers/uio/uio_xlnx_clk_mon.c