Messages in this thread | | | Subject | Re: Tearing down DMA transfer setup after DMA client has finished | From | Mason <> | Date | Fri, 25 Nov 2016 16:21:49 +0100 |
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On 25/11/2016 16:12, Måns Rullgård wrote:
> Mason writes: > >> I've had several talks with the HW dev, and I don't think they >> anticipated the need to mux the 3 channels. In their minds, >> customers would choose at most 3 devices to support, and >> assign one channel to each device statically. >> >> In fact, in tango4, supported devices are: >> A) NAND Flash controllers 0 and 1 >> NB: the upstream driver only uses controller 0 >> B) IDE or SATA controllers 0 and 1 >> C) a few crypto HW blocks which do not work as expected (unused) >> >> Customers typically use 1 channel for NAND, maybe 1 for SATA, >> and 1 channel remains unused. > > The hardware has two sata controllers, and I have a board that uses both.
I don't have the tango3 client devices in mind, but 1 NAND + 2 SATA works out alright for 3 channels, right?
Regards.
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