Re: How to hook dma_request_chan?

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On 17/11/2016 14:05, Måns Rullgård wrote:

> I don't see why the sbox needs to be configured first.  It's just a
> crossbar switch, and until something starts actually issuing requests,
> it shouldn't matter how it is connected.

If the NAND controller starts sending to an uninitialized SBOX,
then (IIUC) some bits are lost forever (black-holed).

So "NAND, SBOX, MBUS" cannot work.

"SBOX, MBUS, NAND" should work, but it doesn't.

"SBOX, NAND, MBUS" works.

Perhaps there is a better solution than making a channel exclusive
to a client. Do you have a suggestion?

The NFC driver is queued for 4.10
6956e2385a16175ca350e199f9c760eb1644d5bf

Regards.

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