[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <PAXPR04MB9185945F7E5B1A36ADF4F3E28906A@PAXPR04MB9185.eurprd04.prod.outlook.com>
Date: Fri, 28 Jul 2023 15:09:19 +0000
From: Shenwei Wang <shenwei.wang@....com>
To: Fabio Estevam <festevam@...il.com>, Andrew Lunn <andrew@...n.ch>
CC: Russell King <linux@...linux.org.uk>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Maxime Coquelin <mcoquelin.stm32@...il.com>,
Shawn Guo <shawnguo@...nel.org>,
Sascha Hauer <s.hauer@...gutronix.de>,
Neil Armstrong <neil.armstrong@...aro.org>,
Kevin Hilman <khilman@...libre.com>,
Vinod Koul <vkoul@...nel.org>, Chen-Yu Tsai <wens@...e.org>,
Jernej Skrabec <jernej.skrabec@...il.com>,
Samuel Holland <samuel@...lland.org>,
Giuseppe Cavallaro <peppe.cavallaro@...com>,
Alexandre Torgue <alexandre.torgue@...s.st.com>,
Jose Abreu <joabreu@...opsys.com>,
Pengutronix Kernel Team <kernel@...gutronix.de>,
dl-linux-imx <linux-imx@....com>,
Jerome Brunet <jbrunet@...libre.com>,
Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
Bhupesh Sharma <bhupesh.sharma@...aro.org>,
Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@...hiba.co.jp>,
Simon Horman <simon.horman@...igine.com>,
Andrew Halaney <ahalaney@...hat.com>,
Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
Wong Vee Khee <veekhee@...le.com>,
Revanth Kumar Uppala <ruppala@...dia.com>,
Jochen Henneberg <jh@...neberg-systemdesign.com>,
"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
"linux-stm32@...md-mailman.stormreply.com"
<linux-stm32@...md-mailman.stormreply.com>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-amlogic@...ts.infradead.org"
<linux-amlogic@...ts.infradead.org>,
"imx@...ts.linux.dev" <imx@...ts.linux.dev>,
Frank Li <frank.li@....com>
Subject: RE: [EXT] Re: [PATCH v2 net 2/2] net: stmmac: dwmac-imx: pause the
TXC clock in fixed-link
> -----Original Message-----
> From: Fabio Estevam <festevam@...il.com>
> Sent: Friday, July 28, 2023 6:01 AM
> To: Shenwei Wang <shenwei.wang@....com>; Andrew Lunn <andrew@...n.ch>
> Cc: Russell King <linux@...linux.org.uk>; David S. Miller
> <davem@...emloft.net>; Eric Dumazet <edumazet@...gle.com>; Jakub
> Kicinski <kuba@...nel.org>; Paolo Abeni <pabeni@...hat.com>; Maxime
> Coquelin <mcoquelin.stm32@...il.com>; Shawn Guo <shawnguo@...nel.org>;
> Sascha Hauer <s.hauer@...gutronix.de>; Neil Armstrong
> <neil.armstrong@...aro.org>; Kevin Hilman <khilman@...libre.com>; Vinod
> Koul <vkoul@...nel.org>; Chen-Yu Tsai <wens@...e.org>; Jernej Skrabec
> <jernej.skrabec@...il.com>; Samuel Holland <samuel@...lland.org>;
> Giuseppe Cavallaro <peppe.cavallaro@...com>; Alexandre Torgue
> <alexandre.torgue@...s.st.com>; Jose Abreu <joabreu@...opsys.com>;
> Pengutronix Kernel Team <kernel@...gutronix.de>; dl-linux-imx <linux-
>
>
> On Thu, Jul 27, 2023 at 12:25 PM Shenwei Wang <shenwei.wang@....com>
> wrote:
>
> > struct plat_stmmacenet_data *plat_dat = priv; @@ -317,8
> > +359,11 @@ static int imx_dwmac_probe(struct platform_device *pdev)
> > plat_dat->exit = imx_dwmac_exit;
> > plat_dat->clks_config = imx_dwmac_clks_config;
> > plat_dat->fix_mac_speed = imx_dwmac_fix_speed;
> > + if (of_machine_is_compatible("fsl,imx93"))
> > + plat_dat->fix_mac_speed = imx_dwmac_fix_speed_mx93;
>
> So you are forcing this on all imx93 boards, even if they don't use a SJA1105.
>
Yes, that's the purpose because it won't hurt even the other side is not SJA1105.
> Andrew Lunn gave the following feedback in v1:
>
> "The SJA1105 has the problem, so i would expect it to be involved in the solution.
> Otherwise, how is this going to work for other MAC drivers?
>
> Maybe you need to expose a common clock framework clock for the TXC clock
> line, which the SJA1105 can disable/enable? That then makes it clear what other
> MAC drivers need to do."
I have been considering this plan for some time. The idea should be implemented
across all i.mx8/9 platforms. I am going to start to work on it in the following month,
and it will take some time to implement it.
Thanks,
Shenwei
Powered by blists - more mailing lists