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[83.233.6.197]) by smtp.gmail.com with ESMTPSA id 38308e7fff4ca-3076ba6bd89sm22534951fa.5.2025.01.29.07.09.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Jan 2025 07:09:35 -0800 (PST) Date: Wed, 29 Jan 2025 16:09:32 +0100 From: Marcus Folkesson To: Guenter Roeck Cc: Support Opensource , Wim Van Sebroeck , linux-watchdog@vger.kernel.org, linux-kernel@vger.kernel.org, Marcus Folkesson Subject: Re: [PATCH] watchdog: da9052_wdt: respect TWDMIN Message-ID: References: <20250129-da9052-v1-1-aa0dfc2ad595@gmail.com> <56d8a231-3af7-4e12-a08b-f7faa549c96a@roeck-us.net> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="2q1nT7SaNg0lW3uu" Content-Disposition: inline In-Reply-To: <56d8a231-3af7-4e12-a08b-f7faa549c96a@roeck-us.net> --2q1nT7SaNg0lW3uu Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hello, On Wed, Jan 29, 2025 at 06:48:04AM -0800, Guenter Roeck wrote: > On 1/29/25 01:24, Marcus Folkesson wrote: > > From: Marcus Folkesson > >=20 > > We have to wait at least the minimium time for the watchdog window > > (TWDMIN) before writings to the wdt register after the > > watchdog is activated. > > Otherwise the chip will assert TWD_ERROR and power down to reset mode. > >=20 >=20 > This is missing a key explanation: >=20 > Why does setting @min_hw_heartbeat_ms in struct watchdog_device > not work for this driver ? Thank you Guenter, I wasn't aware of min_hw_heartbeat_ms. I will see if it helps. I've also noticed that the same problem occur when, for example, I set the timeout with wdctl and .stop is called too soon as the application terminates. >=20 > Guenter >=20 Best regards, Marcus Folkesson --2q1nT7SaNg0lW3uu Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEBVGi6LZstU1kwSxliIBOb1ldUjIFAmeaRKYACgkQiIBOb1ld UjLI/BAAoL5n/58Y3tsCoW2ohJKVZaez8eGCACIqHRNDaQ75C7P2HH663TfdavwC dsid6bR/uQj8xWW+hLD67sn21N3pWhxRrtqouJzkJQy9fWntrMRv39yKscpvxzz/ 7qe5pg81l2Yg7HMXX6ocwuEGYqXlodUENhPCScEK2h5P7daDab176AJtjaJY4F8s qy/mRnHdYGYJKC6ZFCPdPc35ivtcCxJ4QqvX6mqDguxgUN/VAOfri1d8ADCJYDgM w2w7+MiXyZDLFgutjDvFkVI7mNHKAFFDgvECwsAvCI2NMrJ1rQRxCHIakO1Kh3Wr P2v5sUA1KLsx81TduthnPe+HNs5J3Ka2MQf+YkjANWHWTHTjzb1kijvZ8Zf8neka B01kbvTOhzCOV34XADiTniOzhqvxhvh2LN6T7qGCLJjFWplzjeG08DH+3XA66A6S L8+ZRXLMlsiN/UHZ6ky7gDIAEDVp2QRlYPCIFZ38uFlh9jmwJ7lvgtQ+sj17cQUK XaB7A6vYu1Q3hUfdldi8XcbGwv+IgCRBTEA7taWpD+KIMM3Qh+u19jorHI6TKS/z yOwo7kz90oTif/mQXAyVpclq6YzGpZuIGHnKUgKw9HgtYe/eCpbwseAqEqpoAQJQ tahJFLl4yPrxYOPXahUk4cCWc2dMRm5y6CjBX7VVeddapBevSpI= =VQU7 -----END PGP SIGNATURE----- --2q1nT7SaNg0lW3uu--