[PATCH] watchdog: ast2600: add AST2700 support

[Stefan Roese]

On 7/2/26 09:17, Ryan Chen wrote:
> The AST2700 reuses the AST2600 watchdog block unchanged. Bind the
> driver to the aspeed,ast2700-wdt compatible and enable WDT_AST2600
> on the AST2700.
> 
> Signed-off-by: Ryan Chen <ryan_chen at aspeedtech.com>

Reviewed-by: Stefan Roese <stefan.roese at mailbox.org>

Thanks,
Stefan

> ---
> The AST2700 reuses the AST2600 watchdog block with an identical register
> layout and reset behaviour, so no new driver is needed. Bind the existing
> ast2600 watchdog driver to the aspeed,ast2700-wdt compatible and allow
> WDT_AST2600 to be selected on the AST2700.
> ---
>   drivers/watchdog/Kconfig       | 6 +++---
>   drivers/watchdog/ast2600_wdt.c | 1 +
>   2 files changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
> index b91727e1265..3c56c541505 100644
> --- a/drivers/watchdog/Kconfig
> +++ b/drivers/watchdog/Kconfig
> @@ -130,11 +130,11 @@ config WDT_ASPEED
>   	  Second Boot.
>   
>   config WDT_AST2600
> -	bool "Aspeed AST2600 watchdog timer support"
> -	depends on WDT && ASPEED_AST2600
> +	bool "Aspeed AST2600/AST2700 watchdog timer support"
> +	depends on WDT && (ASPEED_AST2600 || ASPEED_AST2700)
>   	default y
>   	help
> -	  Select this to enable watchdog timer for Aspeed ast2500/ast2400 devices.
> +	  Select this to enable watchdog timer for Aspeed ast2600/ast2700 devices.
>   	  The watchdog timer is stopped when initialized. It performs reset, either
>   	  full SoC reset or CPU or just some peripherals, based on the flags.
>   
> diff --git a/drivers/watchdog/ast2600_wdt.c b/drivers/watchdog/ast2600_wdt.c
> index 190490f3692..5eb9b4ba96f 100644
> --- a/drivers/watchdog/ast2600_wdt.c
> +++ b/drivers/watchdog/ast2600_wdt.c
> @@ -87,6 +87,7 @@ static const struct wdt_ops ast2600_wdt_ops = {
>   
>   static const struct udevice_id ast2600_wdt_ids[] = {
>   	{ .compatible = "aspeed,ast2600-wdt" },
> +	{ .compatible = "aspeed,ast2700-wdt" },
>   	{ }
>   };
>   
> 
> ---
> base-commit: e800cc67f5b6cb50a20f37c993ec1cd4063bdbd3
> change-id: 20260702-aspeed_wdt-76e73f1c8853
> 
> Best regards,