The sama5d4_wdt driver hardcodes AT91_WDT_WDDIS (bit 15) for WDDIS
detection, which is incorrect for SAM9X60 and SAMA7G5 that use bit 12
(AT91_SAM9X60_WDDIS). This series fixes the detection by introducing
a per-device wddis_mask and documents the bit position difference in
the header.

Changes in v2:
- Reorder patches: fix first, documentation second
- Drop patch 3/3, not needed with wddis_mask approach
- Keep AT91_SAM9X60_* register names, drop _LEGACY/_MODERN naming
- Limit header changes to WDDIS comments and datasheet references

Balakrishnan Sambath (2):
  watchdog: sama5d4_wdt: Fix WDDIS detection on SAM9X60 and SAMA7G5
  watchdog: at91sam9_wdt.h: Document WDDIS bit position per SoC family

 drivers/watchdog/at91sam9_wdt.h |  6 +++--
 drivers/watchdog/sama5d4_wdt.c  | 48 +++++++++++++++------------------
 2 files changed, 25 insertions(+), 29 deletions(-)

-- 
2.34.1