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

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Message-ID: <20260126090512.49b48ed0@wsk>
Date: Mon, 26 Jan 2026 09:05:12 +0100
From: Łukasz Majewski <lukma@...ladev.com>
To: Peng Fan <peng.fan@....com>
Cc: Michael Turquette <mturquette@...libre.com>, Abel Vesa
 <abelvesa@...nel.org>, Stephen Boyd <sboyd@...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>,
 "imx@...ts.linux.dev" <imx@...ts.linux.dev>, "linux-kernel@...r.kernel.org"
 <linux-kernel@...r.kernel.org>, "linux-arm-kernel@...ts.infradead.org"
 <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] clk: vf610: Add support for the Ethernet switch clocks

Hi Peng,

> Hi Lukasz,
> 
> > Subject: [PATCH] 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).
> > 
> > Signed-off-by: Lukasz Majewski <lukma@...ladev.com>
> > ---
> >  drivers/clk/imx/clk-vf610.c | 5 +++++
> >  1 file changed, 5 insertions(+)
> > 
> > diff --git a/drivers/clk/imx/clk-vf610.c
> > b/drivers/clk/imx/clk-vf610.c index 9e11f1c7c397..88c9b656f244
> > 100644 --- a/drivers/clk/imx/clk-vf610.c
> > +++ b/drivers/clk/imx/clk-vf610.c
> > @@ -309,6 +309,11 @@ static void __init vf610_clocks_init(struct
> > device_node *ccm_node)
> >         clk[VF610_CLK_ENET_TS] = imx_clk_gate("enet_ts",
> > "enet_ts_sel", CCM_CSCDR1, 23);
> >         clk[VF610_CLK_ENET0] = imx_clk_gate2("enet0", "ipg_bus",
> > CCM_CCGR9, CCM_CCGRx_CGn(0));
> >         clk[VF610_CLK_ENET1] = imx_clk_gate2("enet1", "ipg_bus",
> > CCM_CCGR9, CCM_CCGRx_CGn(1));
> > +       clk[VF610_CLK_ESW] = imx_clk_gate2("esw", "ipg_bus",
> > CCM_CCGR10, CCM_CCGRx_CGn(8));
> > +       clk[VF610_CLK_ESW_MAC_TAB0] = imx_clk_gate2("esw_tab0",
> > "ipg_bus", CCM_CCGR10, CCM_CCGRx_CGn(12));
> > +       clk[VF610_CLK_ESW_MAC_TAB1] = imx_clk_gate2("esw_tab1",
> > "ipg_bus", CCM_CCGR10, CCM_CCGRx_CGn(13));
> > +       clk[VF610_CLK_ESW_MAC_TAB2] = imx_clk_gate2("esw_tab2",
> > "ipg_bus", CCM_CCGR10, CCM_CCGRx_CGn(14));
> > +       clk[VF610_CLK_ESW_MAC_TAB3] = imx_clk_gate2("esw_tab3",
> > + "ipg_bus", CCM_CCGR10, CCM_CCGRx_CGn(15));  
> 
> Seems you post dt-binding in a separate patch. It is better to
> put in one patchset.

Ok. No problem - I will add them together :)

> 
> Regards
> Peng
> 
> > 
> >         clk[VF610_CLK_PIT] = imx_clk_gate2("pit", "ipg_bus",
> > CCM_CCGR1, CCM_CCGRx_CGn(7));
> > 
> > --
> > 2.39.5  
> 



-- 
Best regards,

Lukasz Majewski

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