[v4] Add watchdog driver support for RZ/T2H and RZ/N2H SoCs

[PATCH v4 0/6] Add watchdog driver support for RZ/T2H and RZ/N2H SoCs

Posted by Prabhakar 1 month, 2 weeks ago

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

Hi All,

This patch series adds watchdog driver support for the Renesas RZ/T2H
(R9A09G077) and RZ/N2H (R9A09G087) SoCs. The necessary device tree
bindings and driver modifications are included.

v3->v4:
- Updated commit message for patch 1/6 to include an example node.
- Added reviewed-by from Geert for patch 1/6.

v2->v3:
- Fixed commit header for the patches rzv2h_wdt->rzv2h
- Added reviewed-by from Wolfram
- Merged "watchdog: rzv2h_wdt: Make reset controller optional"
  patch with "watchdog: rzv2h: Make "oscclk" and reset controller optional"
- Dropped patch "watchdog: rzv2h: Set min_timeout based on
  max_hw_heartbeat_ms" instead updated the period for RZ/T2H.
- Updated rzv2h_of_data structure to include tops and timeout_cycles
  for RZ/T2H.

v1->v2:
- Dropped items from clock-names and instead added maxItems: 1.
- Added reviewed-by from Rob.

v1: https://lore.kernel.org/all/20250707200111.329663-1-prabhakar.mahadev-lad.rj@bp.renesas.com/
v2: https://lore.kernel.org/all/20250729155915.67758-1-prabhakar.mahadev-lad.rj@bp.renesas.com/
v3: https://lore.kernel.org/all/20250804195723.3963524-1-prabhakar.mahadev-lad.rj@bp.renesas.com/

Cheers,
Prabhakar

Lad Prabhakar (6):
  dt-bindings: watchdog: renesas,wdt: Add support for RZ/T2H and RZ/N2H
  watchdog: rzv2h: Obtain clock-divider and timeout values from OF match
    data
  watchdog: rzv2h: Make "oscclk" and reset controller optional
  watchdog: rzv2h: Add support for configurable count clock source
  watchdog: rzv2h: Add support for RZ/T2H
  watchdog: rzv2h: Improve error strings and add newlines

 .../bindings/watchdog/renesas,wdt.yaml        |  36 ++++-
 drivers/watchdog/rzv2h_wdt.c                  | 148 ++++++++++++++++--
 2 files changed, 164 insertions(+), 20 deletions(-)

-- 
2.51.0

Re: [PATCH v4 0/6] Add watchdog driver support for RZ/T2H and RZ/N2H SoCs

Posted by Lad, Prabhakar 4 weeks, 1 day ago

Hi Wim,

On Wed, Aug 20, 2025 at 9:23 PM Prabhakar <prabhakar.csengg@gmail.com> wrote:
>
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
>
> Hi All,
>
> This patch series adds watchdog driver support for the Renesas RZ/T2H
> (R9A09G077) and RZ/N2H (R9A09G087) SoCs. The necessary device tree
> bindings and driver modifications are included.
>
> v3->v4:
> - Updated commit message for patch 1/6 to include an example node.
> - Added reviewed-by from Geert for patch 1/6.
>
> v2->v3:
> - Fixed commit header for the patches rzv2h_wdt->rzv2h
> - Added reviewed-by from Wolfram
> - Merged "watchdog: rzv2h_wdt: Make reset controller optional"
>   patch with "watchdog: rzv2h: Make "oscclk" and reset controller optional"
> - Dropped patch "watchdog: rzv2h: Set min_timeout based on
>   max_hw_heartbeat_ms" instead updated the period for RZ/T2H.
> - Updated rzv2h_of_data structure to include tops and timeout_cycles
>   for RZ/T2H.
>
> v1->v2:
> - Dropped items from clock-names and instead added maxItems: 1.
> - Added reviewed-by from Rob.
>
> v1: https://lore.kernel.org/all/20250707200111.329663-1-prabhakar.mahadev-lad.rj@bp.renesas.com/
> v2: https://lore.kernel.org/all/20250729155915.67758-1-prabhakar.mahadev-lad.rj@bp.renesas.com/
> v3: https://lore.kernel.org/all/20250804195723.3963524-1-prabhakar.mahadev-lad.rj@bp.renesas.com/
>
> Cheers,
> Prabhakar
>
> Lad Prabhakar (6):
>   dt-bindings: watchdog: renesas,wdt: Add support for RZ/T2H and RZ/N2H
>   watchdog: rzv2h: Obtain clock-divider and timeout values from OF match
>     data
>   watchdog: rzv2h: Make "oscclk" and reset controller optional
>   watchdog: rzv2h: Add support for configurable count clock source
>   watchdog: rzv2h: Add support for RZ/T2H
>   watchdog: rzv2h: Improve error strings and add newlines
>
Gentle ping.

Cheers,
Prabhakar