Re: [PATCH] Documentation: net: phy: improve explanation when to specify the PHY ID
From: David Miller <hidden>
Date: 2017-01-24 18:31:19
Also in:
linux-devicetree
From: Martin Blumenstingl <martin.blumenstingl-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org> Date: Sun, 22 Jan 2017 17:41:32 +0100
The old description basically read like "ethernet-phy-idAAAA.BBBB" can be specified when you know the actual PHY ID. However, specifying this has a side-effect: it forces Linux to bind to a certain PHY driver (the one that matches the ID given in the compatible string), ignoring the ID which is reported by the actual PHY. Whenever a device is shipped with (multiple) different PHYs during it's production lifetime then explicitly specifying "ethernet-phy-idAAAA.BBBB" could break certain revisions of that device. Signed-off-by: Martin Blumenstingl <martin.blumenstingl-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org> --- Thanks to Andrew Lunn for pointing the documentation issue out to me in: http://lists.infradead.org/pipermail/linux-amlogic/2017-January/002141.html
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