linux-kernel - Re: [PATCH v3] clk: vf610: Add support for the Ethernet switch clocks

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Message-ID: <20260128093207.6b4c864b@wsk>
Date: Wed, 28 Jan 2026 09:32:07 +0100
From: Łukasz Majewski <lukma@...ladev.com>
To: Peng Fan <peng.fan@....com>, Andrew Lunn <andrew@...n.ch>
Cc: Abel Vesa <abelvesa@...nel.org>, Michael Turquette
 <mturquette@...libre.com>, Stephen Boyd <sboyd@...nel.org>, Rob Herring
 <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>, Sascha Hauer
 <s.hauer@...gutronix.de>, Pengutronix Kernel Team <kernel@...gutronix.de>,
 Fabio Estevam <festevam@...il.com>, "linux-clk@...r.kernel.org"
 <linux-clk@...r.kernel.org>, "devicetree@...r.kernel.org"
 <devicetree@...r.kernel.org>, "linux-kernel@...r.kernel.org"
 <linux-kernel@...r.kernel.org>, "imx@...ts.linux.dev"
 <imx@...ts.linux.dev>, "linux-arm-kernel@...ts.infradead.org"
 <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v3] clk: vf610: Add support for the Ethernet switch
 clocks

Hi Peng,

> Hi Lukasz,
> 
> > Subject: [PATCH v3] clk: vf610: Add support for the Ethernet switch
> > clocks
> > 
> > The vf610 device has built in the MoreThanIP L2 switch. For proper
> > operation it is required to enable ESW and MAC table lookup clocks.
> > 
> > The MAC table spans from 0x400E_C000 for 0x4000 and it is necessary
> > to provide clocks for each AIPS1-"slot", which size is 0x1000 (hence
> > four separate entries).
> > 
> > Those can be enabled via clock gating CCM_CCGR10 register
> > (0x4006_B068).
> > 
> > This patch also adds VF610_CLK_ESW and
> > VF610_CLK_ESW_MAC_TAB{0123} macros definitions for L2 switch.
> > 
> > The VF610_CLK_END has been removed from dt-bindings, as its
> > number had to be increased when MTIP L2 switch clocks were added,
> > and defined locally in clk-vf610.c driver.
> > 
> > Signed-off-by: Lukasz Majewski <lukma@...ladev.com>
> > ---
> > Changes for v2:
> > - Squash clock DT bindings to this single patch  
> 
> Sorry for not being clear in last comment, dt-binding
> update should be in a separate patch. So please
> separate into two patches in one patchset.
> 

Ok, so I will add dt-binding as a separate comment and as Andrew asked
I will add comment to vf610-clock.h about VF610_CLK_END being moved to
clock driver as a "local" definition.

> Thanks,
> Peng.
> 



-- 
Best regards,

Lukasz Majewski

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