From: Andrew Lunn <andrew@lunn.ch>
To: Andy Duan <fugang.duan@nxp.com>
Cc: David Miller <davem@davemloft.net>,
netdev <netdev@vger.kernel.org>,
Chris Healy <Chris.Healy@zii.aero>,
Chris Heally <cphealy@gmail.com>
Subject: Re: [EXT] [PATCH] net: ethernet: fec: Replace interrupt driven MDIO with polled IO
Date: Tue, 14 Apr 2020 14:55:33 +0200 [thread overview]
Message-ID: <20200414125533.GD611399@lunn.ch> (raw)
In-Reply-To: <VI1PR0402MB3600C15E60CB9436DFB59FCFFFDA0@VI1PR0402MB3600.eurprd04.prod.outlook.com>
> If we switch to polling mode, it is better to add usleep or cpu relax between IO
> Polling.
Hi Andy
Yes. I can do that. I've been wanting to try iopoll.h. I will see what
the performance impacts are.
> > I also have follow up patches which allows the bus to be run at higher speeds.
> > The Ethernet switch i have on the bus is happy to run a 5MHz rather than the
> > default 2.5MHz.
>
> Please compatible with 2.5Hz for your following patches.
Yes. I'm adding device tree properties. If the property is not
present, it will default to 2.5MHz. Same for preamble suppression, if
the boolean DT property is not present, it will not suppress it, so
keeping backwards compatibility.
Andrew
next prev parent reply other threads:[~2020-04-14 12:55 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-14 0:45 [PATCH] net: ethernet: fec: Replace interrupt driven MDIO with polled IO Andrew Lunn
2020-04-14 3:07 ` [EXT] " Andy Duan
2020-04-14 3:49 ` Andrew Lunn
2020-04-14 5:12 ` Andy Duan
2020-04-14 12:55 ` Andrew Lunn [this message]
2020-04-14 23:38 ` David Miller
2020-04-15 0:20 ` Andrew Lunn
2020-04-27 15:19 ` Leonard Crestez
2020-04-27 15:29 ` Andy Duan
2020-04-27 15:37 ` Andrew Lunn
2020-04-27 16:37 ` Andrew Lunn
2020-04-27 16:48 ` Fabio Estevam
2020-04-27 16:46 ` Andrew Lunn
2020-04-27 17:48 ` [EXT] " Andy Duan
2020-04-27 20:00 ` Leonard Crestez
2020-04-27 20:13 ` Andrew Lunn
2020-04-28 7:50 ` [EXT] " Andy Duan
2020-04-28 13:34 ` Andrew Lunn
2020-04-28 13:50 ` Andy Duan
2020-04-28 14:29 ` Andrew Lunn
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