[PATCH v4 0/4] timers: Add support for RZ/N1 SoCs timers

The Renesas RZ/N1 SoCs family has two timers block controller
available.

Each controller is charge of 8 timers (six 16-bit timers + two 32-bit
timers).

Each timer has its own interrupt, its own prescaler that can be used to
device the clock by 25 (timers block are fed with a 25 MHz clock) and
all timers can work in either one-shot or periodic mode.

This series adds support for those timers blocks.

Best regards,
Hervé

Changes v3 -> v4
  v3: https://lore.kernel.org/all/[email protected]/

  Patches 1, 3 and 4:
   No changes.

  Patch 2:
   Took into account Shashiko's feedback
    - Remove CLOCK_SOURCE_SUSPEND_NONSTOP flag
    - Fix CPU ids checks against number of 32-bit timers (avoid
      out-of-bound accesses)
    - Enable IRQ in CPU hotpluig startup function
    - Add CPU hotplug teardown function and disable IRQ in this
      function.
    - Adapt probe() to avoid IRQ handled by CPU hotplug startup/teardown
      been enabled by default.

Changes v2 -> v3
  v2: https://lore.kernel.org/all/[email protected]/

  Rebase on top of v7.2-rc1.

  Patch 1, 3 and 4:
    - Add 'Reviewed-by: Geert Uytterhoeven'

  Patch 2:
    - Fix typos in commit log.
    - Split Kconfig 'depends on' in 2 lines.
    - Fix indentation, space and alignment in code.
    - Fix dev_err_probe() conversion format.
    - Introduce rzn1_timer_setup_timers() and rzn1_timer_register_clkevt()
      to avoid code duplication in rzn1_timer_probe_{first,other}()
    - Add '.suppress_bind_attrs = true'.

Changes v1 -> v2
  v1: https://lore.kernel.org/all/[email protected]/

  Rebase on top of v7.1-rc1.

  Patch 1:
    - Drop minItems related to interrupts property
    - Add 'Reviewed-by: Krzysztof Kozlowski'

  Patches 2, 3 and 4:
    No changes

Herve Codina (Schneider Electric) (4):
  dt-bindings: timer: Add the Renesas RZ/N1 timer
  clocksource/drivers: Add support for the Renesas RZ/N1 timers
  ARM: dts: r9a06g032: Add support for timers
  MAINTAINERS: Add the Renesas RZ/N1 timers driver entry

 .../bindings/timer/renesas,rzn1-timer.yaml    |  74 +++
 MAINTAINERS                                   |   7 +
 arch/arm/boot/dts/renesas/r9a06g032.dtsi      |  34 ++
 drivers/clocksource/Kconfig                   |  11 +
 drivers/clocksource/Makefile                  |   1 +
 drivers/clocksource/timer-rzn1.c              | 487 ++++++++++++++++++
 6 files changed, 614 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/timer/renesas,rzn1-timer.yaml
 create mode 100644 drivers/clocksource/timer-rzn1.c

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2.55.0