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Mon, 07 Jul 2025 13:01:24 -0700 (PDT) Received: from iku.example.org ([2a06:5906:61b:2d00:d418:e5eb:1bc:30dd]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3b471b97376sm11268995f8f.61.2025.07.07.13.01.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 07 Jul 2025 13:01:23 -0700 (PDT) From: Prabhakar X-Google-Original-From: Prabhakar To: Wim Van Sebroeck , Guenter Roeck , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Geert Uytterhoeven , Philipp Zabel , Wolfram Sang , linux-watchdog@vger.kernel.org Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Prabhakar , Biju Das , Fabrizio Castro , Lad Prabhakar Subject: [PATCH 7/9] watchdog: rzv2h: Set min_timeout based on max_hw_heartbeat_ms Date: Mon, 7 Jul 2025 21:01:09 +0100 Message-ID: <20250707200111.329663-8-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250707200111.329663-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20250707200111.329663-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Lad Prabhakar Update the watchdog minimum timeout value to be derived from `max_hw_heartbeat_ms` using `DIV_ROUND_UP()` to ensure a valid and consistent minimum timeout in seconds. This avoids hardcoding a value of `1` second and allows the driver to adapt correctly to different hardware configurations that may set `max_hw_heartbeat_ms` differently (e.g., based on the SoC clock source and divider). Signed-off-by: Lad Prabhakar Reviewed-by: Fabrizio Castro --- drivers/watchdog/rzv2h_wdt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/watchdog/rzv2h_wdt.c b/drivers/watchdog/rzv2h_wdt.c index f0e2bf786acc..9c11ce323c16 100644 --- a/drivers/watchdog/rzv2h_wdt.c +++ b/drivers/watchdog/rzv2h_wdt.c @@ -263,7 +263,7 @@ static int rzv2h_wdt_probe(struct platform_device *pdev) if (ret) return ret; =20 - priv->wdev.min_timeout =3D 1; + priv->wdev.min_timeout =3D DIV_ROUND_UP(priv->wdev.max_hw_heartbeat_ms, M= SEC_PER_SEC); priv->wdev.timeout =3D WDT_DEFAULT_TIMEOUT; priv->wdev.info =3D &rzv2h_wdt_ident; priv->wdev.ops =3D &rzv2h_wdt_ops; --=20 2.49.0