[PATCH 0/6] watchdog: report effective timeout and add gettimeout command

[Juuso Rinta]

This series provides a fix for wdt_start() function, which can
print incorrect timeout values in cases where the function is
called with a timeout value greater than the hardware-supported
maximum. The current implementation prints the value the user
requested, so e.g. the console print may show that watchdog
timeout is set at 60 seconds when the timeout was in practice
clamped to 10 seconds by the device.

The series introduces a get_timeout operation in the watchdog uclass,
which is used in the start-path console print, exposes the operation
with wdt gettimeout shell command, and implements the operation in
sbsa_gwdt, octeontx_wdt and sandbox_wdt drivers.

This fix improves the overall correctness of the console output, and
can be helpful in debugging cases so the console prints reflect
the real timeout on the device when the operation is supported. If
the operation is unsupported on the device, the print remains as it
was before.

Patch summary:
- Patch 1: Add a get_timeout operation and wdt_get_timeout helper
function for wdt-uclass. Update the wdt_start function to use this helper.
- Patch 2: Add a gettimeout subcommand to the wdt command in cmd/wdt.c
which exposes the wdt_get_timeout helper to the shell interface.
- Patch 3: Implement the get_timeout operation for sbsa_gwdt
- Patch 4: Implement the operation for octeontx_wdt
- Patch 5: Implement the operation for sandbox_wdt
- Patch 6: Implement a test for the wdt_get_timeout helper

Signed-off-by: Juuso Rinta <juuso.rinta at nokia.com>
---
Juuso Rinta (6):
      watchdog: wdt-uclass: add get_timeout operation and helper
      cmd: wdt: add gettimeout command
      watchdog: sbsa_gwdt: add get_timeout operation
      watchdog: octeontx_wdt: add get_timeout operation
      watchdog: sandbox_wdt: add get_timeout operation
      test: wdt: add a test for wdt_get_timeout

 cmd/wdt.c                       | 26 ++++++++++++++++++++++++++
 drivers/watchdog/octeontx_wdt.c | 17 ++++++++++++++++-
 drivers/watchdog/sandbox_wdt.c  |  9 +++++++++
 drivers/watchdog/sbsa_gwdt.c    | 11 +++++++++++
 drivers/watchdog/wdt-uclass.c   | 35 +++++++++++++++++++++++++++++++++--
 include/wdt.h                   | 22 ++++++++++++++++++++++
 test/dm/wdt.c                   |  4 ++++
 7 files changed, 121 insertions(+), 3 deletions(-)
---
base-commit: 5a7117b0a2e3f41475945a4443a4e3adf8799024
change-id: 20260427-rinta-watchdog-gettime-6ae2e0a76983

Best regards,
--  
Juuso Rinta <juuso.rinta at nokia.com>