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From: Guenter Roeck <linux@roeck-us.net>
To: "Lad, Prabhakar" <prabhakar.csengg@gmail.com>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>,
	Magnus Damm <magnus.damm@gmail.com>,
	Michael Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@kernel.org>,
	Brian Masney <bmasney@redhat.com>,
	Wim Van Sebroeck <wim@linux-watchdog.org>,
	Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>,
	linux-watchdog@vger.kernel.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org,
	linux-clk@vger.kernel.org,
	Prabhakar <prabhakar.csengg+renesas@gmail.com>,
	Biju Das <biju.das.jz@bp.renesas.com>,
	Fabrizio Castro <fabrizio.castro.jz@renesas.com>,
	Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Subject: Re: [PATCH v4 5/7] watchdog: rzv2h: Add syscon support for WDTDCR
Date: Fri, 18 Sep 2026 10:39:44 -0700	[thread overview]
Message-ID: <a73c5d5d-dd64-4061-83cd-0a1cdcc2db4d@roeck-us.net> (raw)
In-Reply-To: <CA+V-a8vVtjALarck6PE3it1si2hNbveZWoGjTaTUW68Q6yYjcQ@mail.gmail.com>

Hi,

On 9/18/26 08:18, Lad, Prabhakar wrote:
> Hi Guenter,
> 
> On Thu, Sep 17, 2026 at 2:12 AM Guenter Roeck <linux@roeck-us.net> wrote:
>>
>> Hi,
>>
>> On Mon, Aug 17, 2026 at 08:25:38PM +0100, Prabhakar wrote:
>>> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
>>>
>>> On RZ/T2H and RZ/N2H SoCs, the WDTDCR (WDT Debug Control Register) resides
>>> in the second register region of the CPG/MSSR block. Since this
>>> multi-function block is shared with other peripherals, it is exposed via a
>>> syscon regmap interface.
>>>
>>> Look up the SYSC regmap using the optional "renesas,sysc" property and
>>> derive the WDTDCR offset from the watchdog instance index.
>>>
>>> Retain the existing MMIO-based access method when the "renesas,sysc"
>>> property is absent to preserve compatibility with existing DT's.
>>>
>>> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
>>> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
>>
>> Can I apply this patch without the other patches of the series ?
>>
> I posted the v5 series here addressing Sashiko's comments.
> 

Sorry, I was getting confused. I somehow thought they are different series.

Do you plan to send v6 to address the issues reported in v5 ?

Note that Sashiko no longer reports pre-existing issues in public,
so those will be out of scope.

Thanks,
Guenter


  reply	other threads:[~2026-09-18 17:39 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-08-17 19:25 [PATCH v4 0/7] Add syscon support for Renesas RZ/T2H & RZ/N2H in CPG/MSSR driver Prabhakar
2026-08-17 19:25 ` [PATCH v4 1/7] clk: renesas: r9a09g077: Register SYSC regmap Prabhakar
2026-08-25 12:26   ` Geert Uytterhoeven
2026-08-17 19:25 ` [PATCH v4 2/7] arm64: dts: renesas: r9a09g077: Adjust CPG register region sizes Prabhakar
2026-08-25 12:27   ` Geert Uytterhoeven
2026-08-17 19:25 ` [PATCH v4 3/7] arm64: dts: renesas: r9a09g087: " Prabhakar
2026-08-25 12:27   ` Geert Uytterhoeven
2026-08-17 19:25 ` [PATCH v4 4/7] dt-bindings: watchdog: renesas,r9a09g057-wdt: Add CPG/MSSR syscon support Prabhakar
2026-08-25 12:28   ` Geert Uytterhoeven
2026-08-27 14:02   ` Guenter Roeck
2026-08-17 19:25 ` [PATCH v4 5/7] watchdog: rzv2h: Add syscon support for WDTDCR Prabhakar
2026-08-25 12:34   ` Geert Uytterhoeven
2026-09-17  1:12   ` Guenter Roeck
2026-09-18 15:18     ` Lad, Prabhakar
2026-09-18 17:39       ` Guenter Roeck [this message]
2026-08-17 19:25 ` [PATCH v4 6/7] arm64: dts: renesas: r9a09g077: Use CPG/MSSR syscon for WDTDCR access Prabhakar
2026-08-25 12:30   ` Geert Uytterhoeven
2026-08-17 19:25 ` [PATCH v4 7/7] arm64: dts: renesas: r9a09g087: " Prabhakar
2026-08-25 12:30   ` Geert Uytterhoeven
2026-09-08 12:31 ` [PATCH v4 0/7] Add syscon support for Renesas RZ/T2H & RZ/N2H in CPG/MSSR driver Geert Uytterhoeven
2026-09-08 16:22   ` Lad, Prabhakar

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