linux-kernel - Re: [PATCH v4 4/6] watchdog: rzv2h: Add support for configurable count clock source

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Message-ID: <4ed34497-7f28-4520-a909-d7d2c1e50439@roeck-us.net>
Date: Wed, 20 Aug 2025 20:51:29 -0700
From: Guenter Roeck <linux@...ck-us.net>
To: Prabhakar <prabhakar.csengg@...il.com>,
 Wim Van Sebroeck <wim@...ux-watchdog.org>, Rob Herring <robh@...nel.org>,
 Geert Uytterhoeven <geert+renesas@...der.be>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Philipp Zabel <p.zabel@...gutronix.de>,
 Magnus Damm <magnus.damm@...il.com>,
 Wolfram Sang <wsa+renesas@...g-engineering.com>
Cc: linux-watchdog@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
 Biju Das <biju.das.jz@...renesas.com>,
 Fabrizio Castro <fabrizio.castro.jz@...esas.com>,
 Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: Re: [PATCH v4 4/6] watchdog: rzv2h: Add support for configurable
 count clock source

On 8/20/25 13:23, Prabhakar wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
> 
> Add support for selecting the count clock source used by the watchdog
> timer. The RZ/V2H(P) SoC uses the LOCO as the count source, whereas on
> RZ/T2H and RZ/N2H SoCs, the count source is the peripheral clock (PCLKL).
> 
> Introduce a `count_source` field in the SoC-specific data structure and
> refactor the clock rate selection logic accordingly. This prepares the
> driver for supporting the RZ/T2H and RZ/N2H SoCs, which differ in their
> watchdog clocking architecture from RZ/V2H(P).
> 
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
> Reviewed-by: Wolfram Sang <wsa+renesas@...g-engineering.com>

Reviewed-by: Guenter Roeck <linux@...ck-us.net>