linux-kernel - Re: [PATCH net-next 1/1] net: phy: marvell10g: Add WAKE

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Date:   Mon, 16 Aug 2021 06:10:39 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     "Song, Yoong Siang" <yoong.siang.song@...el.com>
Cc:     "Russell King (Oracle)" <linux@...linux.org.uk>,
        Marek Behún <kabel@...nel.org>,
        Heiner Kallweit <hkallweit1@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net-next 1/1] net: phy: marvell10g: Add WAKE_PHY support
 to WOL event

On Mon, Aug 16, 2021 at 03:19:34AM +0000, Song, Yoong Siang wrote:
> > > How does this work if the driver has no interrupt support? What is the
> > > hardware setup this has been tested with?
> > 
> > Hi Russell
> > 
> > We already know from previous patches that the Intel hardware is broken,
> > and does not actually deliver the interrupt which caused the wake up. So i
> > assume this just continues on with the same broken hardware, but they have
> > a different PHY connected.
> 
> Hi Russell & Andrew,
> 
> This is tested on Intel Elkhart Lake (EHL) board. We are using polling mode.
> Both WoL interrupt and link change interrupt are the same pin which is
> routed to PMC. PMC will wake up the system when there is WoL event.

Is the PMC also an interrupt controller?

   Andrew