On Wed, Nov 12, 2014 at 12:01:46AM +0100, Karsten Merker wrote: > On the LeMaker Banana Pi, probing the external ethernet PHY connected > to the SoC's internal GMAC module sometimes fails. The PHY power > supply is handled via a GPIO-controlled regulator, and the existing > regulator startup-delay of 50000us is too short to make sure that the > PHY is always fully powered up when it is queried by phylib. Tests > have shown that to provide a reliable PHY detection, the startup-delay > has to be increased to at least 60000us. To have a certain safety margin > and to cater for manufacturing variations between different boards, > the delay gets set to 100000us as discussed on the linux-arm-kernel > mailinglist. > > Signed-off-by: Karsten Merker <merker@xxxxxxxxxx> > Acked-by: Hans de Goede <hdegoede@xxxxxxxxxx> Merged, thanks. Maxime -- Maxime Ripard, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com
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