On 11/13/2014 01:22 PM, Roger Quadros wrote: > Hi Tony, > > These patches add CAN support for am33xx, am43xx and dra7 platforms. > They can go in independent of [1] but depend on [1] for functionality. > > Tested on am335x-evm, am437x-gp-evm and dra7-evm. > > NOTE: > - for DCAN to work on DRA7 we need this patch to keep the CAN PHY powered. > https://lkml.org/lkml/2014/10/21/484 > > - on DRA7 there is another issue which causes undesired behaviour if WKUPAON and > L4CFG clock domains are allowed to HW_AUTO. Undesired behaviour is in the form > of DCAN1 module being stuck-in-transition when disabled and RAMINIT-done bit > not getting set as part of RAMINIT mechanism. To address these issues there is a patch > to prevent these clockdomains from HW_AUTO. > https://github.com/rogerq/linux/commit/31d6da939dbbaf8ea2ab96ca5680b81cd5607e51 > Even without this second patch DCAN seems to work. FWIW: Acked-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx> I've send a pull request with the CAN driver changes to David Miller yesterday, the code is supposed to hit mainline in v3.19. regards, Marc -- Pengutronix e.K. | Marc Kleine-Budde | Industrial Linux Solutions | Phone: +49-231-2826-924 | Vertretung West/Dortmund | Fax: +49-5121-206917-5555 | Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de |
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