From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Ujfalusi Subject: Re: [PATCH 0/3] dmaengine: ti-dma-crossbar: channel reserving and edma3-tcc support Date: Fri, 30 Oct 2015 09:20:37 +0200 Message-ID: <56331A45.6020201@ti.com> References: <1446107331-30041-1-git-send-email-peter.ujfalusi@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <1446107331-30041-1-git-send-email-peter.ujfalusi-l0cyMroinI0@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: vinod.koul-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org, nsekhar-l0cyMroinI0@public.gmane.org Cc: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, dmaengine-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org, r.schwebel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org List-Id: devicetree@vger.kernel.org Vinod, On 10/29/2015 10:28 AM, Peter Ujfalusi wrote: > Hi, >=20 > This series depends on the eDMA work I have done, which has been now = applied: > https://lkml.org/lkml/2015/10/16/64 >=20 > DRA7 family of chips have both sDMA and eDMA. Currently only sDMA can= be used > becasue the old driver stack for eDMA did not allowed integration w/o= hacks. >=20 > Due to the nature of eDMA the crossbar needs to know which eDMA event= s it can > use to map incoming events towards the eDMA. In eDMA a channel is wir= ed to be > used with one specific event. For example eDMA event 14 can only be h= andled by > eDMA channel 14. > The eDMA itself can be shared by different processors in the system (= ARM, DSP, > etc) and since ARM/Linux is the master we need to know which channels= are used > by other cores. Also we need to mask out channels used for memcpy fro= m the > events we use for HW triggers. Please ignore this series, I have found some issue with it and I just s= tarted to debug it. Will post V2 as soon as I found the problem. >=20 > Regards, > Peter > --- > Peter Ujfalusi (3): > dmaengine: ti-dma-crossbar: dra7: Use bitops instead of idr > dmaengine: ti-dma-crossbar: dra7: Support for reserving DMA event > ranges > dmaengine: ti-dma-crossbar: dra7: Support for eDMA with new binding= s >=20 > .../devicetree/bindings/dma/ti-dma-crossbar.txt | 6 ++ > drivers/dma/ti-dma-crossbar.c | 81 ++++++++++++= +++++++--- > 2 files changed, 76 insertions(+), 11 deletions(-) >=20 --=20 P=E9ter -- To unsubscribe from this list: send the line "unsubscribe devicetree" i= n the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html