Re: [PATCH v1 1/1] dmaengine: dw: Program xBAR hardware for Elkhart Lake
From: Vinod Koul
Date: Mon Jun 07 2021 - 14:23:15 EST
On 07-06-21, 15:30, Andy Shevchenko wrote:
> On Mon, Jun 07, 2021 at 05:04:57PM +0530, Vinod Koul wrote:
> > On 02-06-21, 11:56, Andy Shevchenko wrote:
> > > + case DMA_DEV_TO_DEV:
> > > + default:
> > > + value |= CTL_CH_WR_NON_SNOOP_BIT | CTL_CH_RD_NON_SNOOP_BIT;
> > > + value |= CTL_CH_TRANSFER_MODE_S2S;
> > > + break;
> > aha, how did you test this...
> Not sure what the question is about. You are talking about last two cases
> or the entire switch? Last two weren't tested, just filed for the sake of
> being documented. First two were tested with SPI host controllers.
Last one is Device to device which is not supported by dmaengine and
cannot be tested right now!