Re: [PATCH v2 7/9] watchdog: rzv2h: Set min_timeout based on max_hw_heartbeat_ms

[PATCH v2 0/9] Add watchdog driver support for RZ/T2H and RZ/N2H SoCs · Prabhakar <prabhakar.csengg@gmail.com> · 2025-07-29
[PATCH v2 1/9] dt-bindings: watchdog: renesas,wdt: Add support for RZ/T2H and RZ/N2H · Prabhakar <prabhakar.csengg@gmail.com> · 2025-07-29
[PATCH v2 2/9] watchdog: rzv2h_wdt: Obtain clock-divider ranges from OF match data · Prabhakar <prabhakar.csengg@gmail.com> · 2025-07-29
Re: [PATCH v2 2/9] watchdog: rzv2h_wdt: Obtain clock-divider ranges from OF match data · Wolfram Sang <wsa+renesas@sang-engineering.com> · 2025-08-01
[PATCH v2 3/9] watchdog: rzv2h_wdt: Obtain CKS divider via OF data · Prabhakar <prabhakar.csengg@gmail.com> · 2025-07-29
Re: [PATCH v2 3/9] watchdog: rzv2h_wdt: Obtain CKS divider via OF data · Wolfram Sang <wsa+renesas@sang-engineering.com> · 2025-08-01
Re: [PATCH v2 3/9] watchdog: rzv2h_wdt: Obtain CKS divider via OF data · "Lad, Prabhakar" <prabhakar.csengg@gmail.com> · 2025-08-01
[PATCH v2 4/9] watchdog: rzv2h_wdt: Make "oscclk" an optional clock · Prabhakar <prabhakar.csengg@gmail.com> · 2025-07-29
Re: [PATCH v2 4/9] watchdog: rzv2h_wdt: Make "oscclk" an optional clock · Wolfram Sang <wsa+renesas@sang-engineering.com> · 2025-08-01
[PATCH v2 5/9] watchdog: rzv2h_wdt: Add support for configurable count clock source · Prabhakar <prabhakar.csengg@gmail.com> · 2025-07-29
Re: [PATCH v2 5/9] watchdog: rzv2h_wdt: Add support for configurable count clock source · Wolfram Sang <wsa+renesas@sang-engineering.com> · 2025-08-01
[PATCH v2 6/9] watchdog: rzv2h_wdt: Make reset controller optional · Prabhakar <prabhakar.csengg@gmail.com> · 2025-07-29
Re: [PATCH v2 6/9] watchdog: rzv2h_wdt: Make reset controller optional · Wolfram Sang <wsa+renesas@sang-engineering.com> · 2025-08-01
Re: [PATCH v2 6/9] watchdog: rzv2h_wdt: Make reset controller optional · "Lad, Prabhakar" <prabhakar.csengg@gmail.com> · 2025-08-01
[PATCH v2 7/9] watchdog: rzv2h: Set min_timeout based on max_hw_heartbeat_ms · Prabhakar <prabhakar.csengg@gmail.com> · 2025-07-29
Re: [PATCH v2 7/9] watchdog: rzv2h: Set min_timeout based on max_hw_heartbeat_ms · Wolfram Sang <wsa+renesas@sang-engineering.com> · 2025-08-01
Re: [PATCH v2 7/9] watchdog: rzv2h: Set min_timeout based on max_hw_heartbeat_ms · "Lad, Prabhakar" <prabhakar.csengg@gmail.com> · 2025-08-01
Re: [PATCH v2 7/9] watchdog: rzv2h: Set min_timeout based on max_hw_heartbeat_ms · Guenter Roeck <linux@roeck-us.net> · 2025-08-01
Re: [PATCH v2 7/9] watchdog: rzv2h: Set min_timeout based on max_hw_heartbeat_ms · "Lad, Prabhakar" <prabhakar.csengg@gmail.com> · 2025-08-01
Re: [PATCH v2 7/9] watchdog: rzv2h: Set min_timeout based on max_hw_heartbeat_ms · Guenter Roeck <linux@roeck-us.net> · 2025-08-01
Re: [PATCH v2 7/9] watchdog: rzv2h: Set min_timeout based on max_hw_heartbeat_ms · "Lad, Prabhakar" <prabhakar.csengg@gmail.com> · 2025-08-01
Re: [PATCH v2 7/9] watchdog: rzv2h: Set min_timeout based on max_hw_heartbeat_ms · Guenter Roeck <linux@roeck-us.net> · 2025-08-01
Re: [PATCH v2 7/9] watchdog: rzv2h: Set min_timeout based on max_hw_heartbeat_ms · "Lad, Prabhakar" <prabhakar.csengg@gmail.com> · 2025-08-02
Re: [PATCH v2 7/9] watchdog: rzv2h: Set min_timeout based on max_hw_heartbeat_ms · Guenter Roeck <linux@roeck-us.net> · 2025-08-03
Re: [PATCH v2 7/9] watchdog: rzv2h: Set min_timeout based on max_hw_heartbeat_ms · "Lad, Prabhakar" <prabhakar.csengg@gmail.com> · 2025-08-04
[PATCH v2 8/9] watchdog: rzv2h: Add support for RZ/T2H · Prabhakar <prabhakar.csengg@gmail.com> · 2025-07-29
Re: [PATCH v2 8/9] watchdog: rzv2h: Add support for RZ/T2H · Wolfram Sang <wsa+renesas@sang-engineering.com> · 2025-08-01
Re: [PATCH v2 8/9] watchdog: rzv2h: Add support for RZ/T2H · "Lad, Prabhakar" <prabhakar.csengg@gmail.com> · 2025-08-01
Re: [PATCH v2 8/9] watchdog: rzv2h: Add support for RZ/T2H · Wolfram Sang <wsa+renesas@sang-engineering.com> · 2025-08-03
[PATCH v2 9/9] watchdog: rzv2h_wdt: Improve error strings and add newlines · Prabhakar <prabhakar.csengg@gmail.com> · 2025-07-29
Re: [PATCH v2 9/9] watchdog: rzv2h_wdt: Improve error strings and add newlines · Wolfram Sang <wsa+renesas@sang-engineering.com> · 2025-08-01
Re: [PATCH v2 0/9] Add watchdog driver support for RZ/T2H and RZ/N2H SoCs · Wolfram Sang <wsa+renesas@sang-engineering.com> · 2025-07-29
Re: [PATCH v2 0/9] Add watchdog driver support for RZ/T2H and RZ/N2H SoCs · "Lad, Prabhakar" <prabhakar.csengg@gmail.com> · 2025-07-29

From: Wolfram Sang <wsa+renesas@sang-engineering.com>
Date: 2025-08-01 04:10:42
Also in: linux-renesas-soc, linux-watchdog, lkml

On Tue, Jul 29, 2025 at 04:59:13PM +0100, Prabhakar wrote:

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

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.

I don't understand this change. Why is the _minimum_ timeout based on
the _maximum_ heartbeat?

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