On Wed, Oct 03, 2012 at 03:58:45, Daniel Mack wrote: > On 31.08.2012 14:50, Hebbar, Gururaja wrote: > > The OMAP2+ variant of McASP is different from Davinci variant w.r.to some > > register offset and missing generic SRAM APIs support > > > > Changes > > - Add new MCASP_VERSION_3 to identify new variant. New DT compatible > > "ti,omap2-mcasp-audio" to identify version 3 controller. > > - The register offsets are handled depending on the version. > > - Provide a config option to indicate missing SRAM API support. > > Could you give some insight which hardware this was tested on? I'm > trying to get this up and running on a AM33xx board, and the patches > look all reasonable to me. My problem is that I can't make the DMA > engine move forward, I fail to receive a single interrupt on this > peripheral after the stream starts. I will continue searching for the > reason of this tomorrow, but maybe you can give me some hint by > explaining your setup? > > Note that I'm using your patches together with Matt's from this series: > > https://github.com/ohporter/linux/tree/edma-dmaengine-am33xx-rfc-v1 > > ... but it doesn't work without those either.
When I started working on adding DT support to McASP driver, Matt Porter EDMA port was not yet ready. So 1. I took existing edma driver from AM335x Arago release [1] (driver + edma device init). 2. Added this to Vaibhav's Local (linux-next + AM335x patches) tree [2] 3. Added DT support to McASP driver. I tested this on AM335x EVM board. If you need the code, I can share it as a patch (I will send the patch as a private mail since the patch is huge). [1] http://arago-project.org/git/projects/?p=linux-am33x.git;a=commit;h=d7e124e8074cccf9958290e773c88a4b2b36412b [2] https://github.com/hvaibhav/am335x-linux/tree/am335x-upstream-staging > > > > Thanks, > Daniel > > Regards, Gururaja _______________________________________________ Davinci-linux-open-source mailing list [email protected] http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
