-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi,
On 03/09/2014 10:41 AM, Maxime Ripard wrote: > 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 :) I'll likely spend some time on A31 stuff tomorrow evening. If I've soe success then I'll let you know. If I don't report anything I did not have any success :) Either way feel free to beat me to getting either one working on A31. > >> 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. Right, this is likely something specific to this board. >> 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. Sounds good (better then writing our own subsys). About the extra controller flag, that would be to opt-out of drivers which do auto bus scanning, as well as maybe to opt out of the creation of i2c-dev /dev nodes. As we're not really i2c and we may want to avoid userspace from poking the bus. Anyways first we need to learn more about this. Regards, Hans -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iEYEARECAAYFAlMeLpYACgkQF3VEtJrzE/tYIwCgjfN3F4u0vuPXvM3O+XmVeQqv fg0AnjKBr0MY3ROorpEen1eXOt0miRDJ =LDH1 -----END PGP SIGNATURE----- -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
