Hi Hans, On Sun, Mar 09, 2014 at 08:41:35AM +0100, Hans de Goede wrote: > Hi Maxime, > > Yesterday I've been playing a bit with my Mele A1000G Quad, with the > purpose of trying to get usb and mmc working there. I already have > wens' gmac patches for the A31 in my tree, so for starters I tried > to get that to work.
I was planning to do it next week too :) > Unfortunately the fex shows that the phy is powered by dldo1 from > the pmic, and by default that is configured to off. So I got stuck > there wrt getting the gmac to work on the A1000G Quad / M9. I'm not definitive, but it looks like the EVB doesn't though. > Do you know if anyone is working on pmic support for the A31, or for > the new push-pull serial bus this uses? It's on my todo list, but I don't think anyone's working on it. > Is this bus similar enough to i2c that we can use the i2c subsys for > this, maybe with an extra controller flag, or do we need to likely > write a whole new subsys for this ? It really looks like I2C, except that at the end of each byte sent, there's an extra parity bit sent. I think we don't really need a new bus for this, but we can somehow fit this into I2C. We could do it through an extra controller flag, but I'm not sure that it's actually needed, since we can handle the parity bit in the driver and present a 8-bit interface to the framework. > Also do you know of a datasheet for the AXP221 somewhere ? Nope :( Maxime -- Maxime Ripard, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com
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