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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Simon Horman , Philipp Zabel , Russell King , Geert Uytterhoeven , Magnus Damm , linux-renesas-soc@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Biju Das , Fabrizio Castro , Lad Prabhakar Subject: Re: [PATCH net-next 06/11] net: dsa: rzn1-a5psw: Add support for optional timestamp clock Message-ID: <20251121193942.gsogugfoa6nafwzf@skbuf> References: <20251121113553.2955854-1-prabhakar.mahadev-lad.rj@bp.renesas.com> <20251121113553.2955854-1-prabhakar.mahadev-lad.rj@bp.renesas.com> <20251121113553.2955854-7-prabhakar.mahadev-lad.rj@bp.renesas.com> <20251121113553.2955854-7-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20251121113553.2955854-7-prabhakar.mahadev-lad.rj@bp.renesas.com> <20251121113553.2955854-7-prabhakar.mahadev-lad.rj@bp.renesas.com> On Fri, Nov 21, 2025 at 11:35:32AM +0000, Prabhakar wrote: > From: Lad Prabhakar > > Add support for an optional "ts" (timestamp) clock to the RZN1 A5PSW > driver. Some SoC variants provide a dedicated clock source for > timestamping or time synchronization features within the Ethernet > switch IP. > > Request and enable this clock during probe if defined in the device tree. > If the clock is not present, the driver continues to operate normally. > > This change prepares the driver for Renesas RZ/T2H and RZ/N2H SoCs, where > the Ethernet switch includes a timestamp clock input. > > Signed-off-by: Lad Prabhakar > --- What is the impact to the current driver if you get the clock and disable it? I'm trying to understand if it's possible to only enable it when using a feature that requires it.