[v2,00/12] watchdog: s3c2410: Add Exynos850 support

Message

Sam Protsenko Oct. 31, 2021, 12:22 p.m. UTC

Exynos850 WDT IP-core differs a bit from existing platforms:
  - Another set of PMU registers
  - Separate WDT instance for each CPU cluster, having different PMU
    registers/bits
  - Source clock is different from PCLK

Implement all missing features above and enable Exynos850 WDT support.
While at it, do a bit of cleaning up.

Changes in v2:
  - Added patch to fail probe if no valid timeout was found, as
    suggested by Guenter Roeck (03/12)
  - Extracted code for separating disable/mask functions into separate
    patch (06/12)
  - Added patch for inverting mask register value (07/12)
  - Extracted PMU cleanup code to separate patch, to ease the review and
    porting (09/12)
  - Added patch for removing not needed 'err' label in probe function (11/12)
  - Addressed all outstanding review comments on mailing list

Sam Protsenko (12):
  dt-bindings: watchdog: Require samsung,syscon-phandle for Exynos7
  dt-bindings: watchdog: Document Exynos850 watchdog bindings
  watchdog: s3c2410: Fail probe if can't find valid timeout
  watchdog: s3c2410: Let kernel kick watchdog
  watchdog: s3c2410: Make reset disable register optional
  watchdog: s3c2410: Extract disable and mask code into separate
    functions
  watchdog: s3c2410: Implement a way to invert mask reg value
  watchdog: s3c2410: Add support for WDT counter enable register
  watchdog: s3c2410: Cleanup PMU related code
  watchdog: s3c2410: Support separate source clock
  watchdog: s3c2410: Remove superfluous err label
  watchdog: s3c2410: Add Exynos850 support

 .../bindings/watchdog/samsung-wdt.yaml        |  47 ++-
 drivers/watchdog/s3c2410_wdt.c                | 289 +++++++++++++-----
 2 files changed, 254 insertions(+), 82 deletions(-)