On Tue, Jul 29, 2025 at 04:59:14PM +0100, Prabhakar wrote:

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

Add support for the RZ/T2H watchdog timer. The RZ/T2H requires control of
the watchdog counter using the WDT Debug Control Register (WDTDCR), which
allows explicitly stopping and starting the counter. This behavior differs
from RZ/V2H, which doesn't use WDTDCR, so the driver is extended to handle
this requirement.

To support this, a new `wdtdcr` flag is introduced in the `rzv2h_of_data`
structure. When set, the driver maps the WDTDCR register and uses it to
control the watchdog counter in the start, stop, and restart callbacks.
Additionally, the clock divisor and count source for RZ/T2H are defined
to match its hardware configuration.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

Well, this new DCR register is really strange, especially its location
in a seperate resource. But given that, your code handling it looks
okay to me, so:

Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>