Hi Biju,
On 27-07-21, 13:45, Biju Das wrote:
> > > +
> > > + if (config->peripheral_config) {
> > > + ch_cfg = config->peripheral_config;
> > > + channel->chcfg = *ch_cfg;
> > > + }
> >
> > can you explain what this the ch_cfg here and what does it represent?
>
> It is a 32 bit value represent channel config value which supplied by each client driver during slave config.
> It contains information like transfer mode,src/destination data size, Ack mode, Level type, DMA request on rising edge or falling
> Edge, request direction etc...
>
> For eg:- The channel config for SSI tx is (0x11228).
> An example usage can be found here [1]
>
> [1] https://patchwork.kernel.org/project/linux-renesas-soc/patch/20210719134040.7964-8-biju.das.jz@xxxxxxxxxxxxxx/
Sorry I dont like passing numbers like this :(
Can you explain what is meant by each of the above values and looks like
some (if not all) can be derived (slave config as well as transaction
properties)
--
~Vinod
