linux-kernel - Re: [PATCH] net: stmmac: dwmac-sun8i: fix allwinner,leds-active-low handling

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Message-ID: <CAGb2v67hv7ayH=F-MBG-PCCeVt43PH-O-6b3KOyGXSpr2s4DGg@mail.gmail.com>
Date:   Wed, 29 Nov 2017 23:41:44 +0800
From:   Chen-Yu Tsai <wens@...e.org>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     Corentin Labbe <clabbe.montjoie@...il.com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        netdev <netdev@...r.kernel.org>,
        linux-sunxi <linux-sunxi@...glegroups.com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Maxime Ripard <maxime.ripard@...e-electrons.com>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] net: stmmac: dwmac-sun8i: fix allwinner,leds-active-low handling

On Wed, Nov 29, 2017 at 11:37 PM, Andrew Lunn <andrew@...n.ch> wrote:
> On Wed, Nov 29, 2017 at 10:02:40AM +0100, Corentin Labbe wrote:
>> On Tue, Nov 28, 2017 at 06:38:26PM +0100, Andrew Lunn wrote:
>> > On Tue, Nov 28, 2017 at 05:48:22PM +0100, Corentin Labbe wrote:
>> > > The driver expect "allwinner,leds-active-low" to be in PHY node, but
>> > > the binding doc expect it to be in MAC node.
>> > >
>> > > Since all board DT use it also in MAC node, the driver need to search
>> > > allwinner,leds-active-low in MAC node.
>> >
>> > Hi Corentin
>> >
>> > I'm having trouble working out how this worked before. This is code
>> > you moved around, when adding external/internal MDIOs. But the very
>> > first version of this driver code used priv->plat->phy_node. Did that
>> > somehow point to the MAC node when the internal PHY is used? Or has it
>> > been broken all the time?
>> >
>>
>> Hello
>>
>
>> Since this feature control only when the activity LED need to blink,
>> nobody see that it was broken.
>
> Hi Corentin
>
> So it never worked?
>
> If it never worked, moving the DT properties into the PHY node, where
> they belong, won't introduce a regression :-)

It worked at one point. During some previous iteration, they lit up as
they were supposed to.

ChenYu