Re: [PATCH v2 10/19] dma: imx-sdma: Add multi fifo support

Hi Fabio,

On Tue, Mar 29, 2022 at 07:55:45AM -0300, Fabio Estevam wrote:

Hi Sascha,

On Mon, Mar 28, 2022 at 8:28 AM Sascha Hauer s.hauer@pengutronix.de wrote:

...

Signed-off-by: Sascha Hauer s.hauer@pengutronix.de

Please add a commit log, thanks.

oh, sure. Will add this:

The i.MX SDMA engine can read from / write to multiple successive hardware FIFO registers, referred to as "Multi FIFO support". This is needed for the micfil driver and certain configurations of the SAI driver. This patch adds support for this feature.

The number of FIFOs to read from / write to must be communicated from the client driver to the SDMA engine. For this the struct dma_slave_config::peripheral_config field is used.

Sascha