linux-kernel - Re: [PATCH net-next 00/19] net: phy: add support for shared interrupts (part 1)

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Message-ID: <b9d74b13-1b6a-1fa1-700e-c1aa82eab956@gmail.com>
Date:   Fri, 30 Oct 2020 23:33:46 +0100
From:   Heiner Kallweit <hkallweit1@...il.com>
To:     Vladimir Oltean <olteanv@...il.com>
Cc:     Ioana Ciornei <ciorneiioana@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Russell King <linux@...linux.org.uk>,
        Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Ioana Ciornei <ioana.ciornei@....com>,
        Alexandru Ardelean <alexandru.ardelean@...log.com>,
        Andre Edich <andre.edich@...rochip.com>,
        Antoine Tenart <atenart@...nel.org>,
        Baruch Siach <baruch@...s.co.il>,
        Christophe Leroy <christophe.leroy@....fr>,
        Dan Murphy <dmurphy@...com>,
        Divya Koppera <Divya.Koppera@...rochip.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Hauke Mehrtens <hauke@...ke-m.de>,
        Jerome Brunet <jbrunet@...libre.com>,
        Kavya Sree Kotagiri <kavyasree.kotagiri@...rochip.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Marco Felsch <m.felsch@...gutronix.de>,
        Marek Vasut <marex@...x.de>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Mathias Kresin <dev@...sin.me>,
        Maxim Kochetkov <fido_max@...ox.ru>,
        Michael Walle <michael@...le.cc>,
        Neil Armstrong <narmstrong@...libre.com>,
        Nisar Sayed <Nisar.Sayed@...rochip.com>,
        Oleksij Rempel <o.rempel@...gutronix.de>,
        Philippe Schenker <philippe.schenker@...adex.com>,
        Willy Liu <willy.liu@...ltek.com>,
        Yuiko Oshino <yuiko.oshino@...rochip.com>
Subject: Re: [PATCH net-next 00/19] net: phy: add support for shared
 interrupts (part 1)

On 30.10.2020 23:06, Vladimir Oltean wrote:
> On Fri, Oct 30, 2020 at 10:56:24PM +0100, Heiner Kallweit wrote:
>> I'd just like to avoid the term "shared interrupt", because it has
>> a well-defined meaning. Our major concern isn't shared interrupts
>> but support for multiple interrupt sources (in addition to
>> link change) in a PHY.
> 
> You may be a little bit confused Heiner.
> This series adds support for exactly _that_ meaning of shared interrupts.
> Shared interrupts (aka wired-OR on the PCB) don't work today with the
> PHY library. I have a board that won't even boot to prompt when the
> interrupt lines of its 2 PHYs are enabled, that this series fixes.
> You might need to take another look through the commit messages I'm afraid.
> 
Right, I was focusing on the PTP irq use case.