[PATCH v3 0/4] watchdog: cadence_wdt: Support all available prescaler values

[Melin Tomas <tomas.melin@vaisala.com>]

Cadence watchdog HW supports prescaler values of 8, 64, 512 and 4096,
currently only 512 and 4096 are used by driver.

This series adds support to select prescaler values of 8 and 64 for
lower input clock frequencies.

Changes v3:
- Rebased on v5.2
- Move entire clock init block earlier in probe
- Add check for clock rate not being 0
- Add clock rate in error message

Changes v2:
- Add calculation of actual min/max timeout values
- Validate input clock frequencies to not allow
  frequencies that would result in timeout granularity
  of > 1 second.

Tomas Melin (4):
  watchdog: cadence_wdt: Move clock detection eariler in probe
  watchdog: cadence_wdt: Calculate actual timeout limits
  watchdog: cadence_wdt: Group struct member init statements
  watchdog: cadence_wdt: Support all available prescaler values

 drivers/watchdog/cadence_wdt.c | 65 ++++++++++++++++++++--------------
 1 file changed, 38 insertions(+), 27 deletions(-)

-- 
2.17.2