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Mon, 19 Oct 2026 18:38:38 -0700 (PDT) Received: from server.roeck-us.net ([2600:1700:e321:62f0:da43:aeff:fecc:bfd5]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-360813b6e33sm37720983eec.7.2026.10.19.18.38.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Oct 2026 18:38:37 -0700 (PDT) Sender: Guenter Roeck Date: Mon, 19 Oct 2026 18:38:37 -0700 From: Guenter Roeck To: Florian Fainelli Cc: linux-mips@vger.kernel.org, Wim Van Sebroeck , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Thomas Bogendoerfer , Dmitry Torokhov , Bartosz Golaszewski , Jakub Kicinski , Andrew Lunn , Ethan Nelson-Moore , Eric Biggers , Greg Kroah-Hartman , Mingyu Wang <25181214217@stu.xidian.edu.cn>, Robert Marko , "open list:WATCHDOG DEVICE DRIVERS" , "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , open list , manuel.lauss@gmail.com Subject: Re: [PATCH 2/5] dt-bindings: watchdog: gpio: Describe minimum heartbeat intervals Message-ID: <704e79be-3fa0-46fa-aaa9-d13fb9d933ac@roeck-us.net> References: <20261016221617.2223004-1-f.fainelli@gmail.com> <20261016221617.2223004-3-f.fainelli@gmail.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20261016221617.2223004-3-f.fainelli@gmail.com> On Fri, Oct 16, 2026 at 03:16:14PM -0700, Florian Fainelli wrote: > Some GPIO-controlled watchdogs require a minimum interval between input > transitions. Add an optional hw-min-interval-ms property to describe this > constraint, allowing the watchdog core to defer early keepalives. > > Also remove the 16-bit limit on hw_margin_ms. The generic GPIO driver has > no hardware register imposing this limit, and its heartbeat interval is > stored in an unsigned int. The MTX-1 watchdog has a nominal 100-second > hardware timeout and requires at least 1.6 seconds between transitions. > > Signed-off-by: Florian Fainelli > Acked-by: Conor Dooley Applied. Thanks, Guenter