On Tue, Mar 10, 2020 at 08:49:08AM -0700, Kevin Li wrote: > > This is not how any of this is supposed to work, it's unlikely to work > > well with other devices. If the device supports both master and slave > > operation then you should let the machine driver pick if the SoC or the > > CODEC is master via set_fmt(), randomly varying this at runtime is not > > going to be helpful. > Maybe the name "master/slave" is confusing, these names come from internal > chip signals and do not represent the state of the i2s bus master. Our SoC > supports only master mode in the i2s bus. The Rx and Tx block each have an > independent bit to indicate if it is generating the clock for the i2s bus. > The i2s bus clocks need to be generated from either the Rx block or the Tx > block, but not both. Right, at the very least this needs to be better documented in the code.
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