Add a generic DesignWare APB timer device model, and wire it
up for the K230 machine with num-timers=6 and a 6.25 MHz clock.

Changes since v3 (address review comments from Philippe Mathieu-Daude):
- Drop Clock framework mention from the commit message
- Cover the device in MAINTAINERS (device files in patch 1/3,
  test file in patch 3/3)
- Move trace calls to function entry
- Drop the addr mask; the MMIO region stays at 0x100 (the IP
  register implementation range; the SoC aperture is board-level)
- Hard-code comp-version (0x3231312A, "211*", IP component version)
- Use the Resettable API (phases.hold) instead of legacy reset
- Add unrealize to free per-channel ptimers
- Keep register offsets and bit definitions in the C file
- Drop private/public comments in the header
- Move K230 timer macros into k230.c

raoyi (3):
  hw/timer: add DesignWare APB timer model
  hw/riscv: add DesignWare APB timer to K230 board
  tests/qtest: add k230 dwapb timer test

 MAINTAINERS                         |   3 +
 hw/riscv/Kconfig                    |   1 +
 hw/riscv/k230.c                     |  33 ++-
 hw/timer/Kconfig                    |   4 +
 hw/timer/dw-apb-timer.c             | 376 ++++++++++++++++++++++++++++
 hw/timer/meson.build                |   1 +
 hw/timer/trace-events               |   8 +
 include/hw/riscv/k230.h             |   8 +
 include/hw/timer/dw-apb-timer.h     |  40 +++
 tests/qtest/k230-dwapb-timer-test.c | 274 ++++++++++++++++++++
 tests/qtest/meson.build             |   4 +-
 11 files changed, 748 insertions(+), 4 deletions(-)
 create mode 100644 hw/timer/dw-apb-timer.c
 create mode 100644 include/hw/timer/dw-apb-timer.h
 create mode 100644 tests/qtest/k230-dwapb-timer-test.c

-- 
2.53.0