On Sat, Aug 21, 2021 at 10:45:52PM +0200, Nicolas Frattaroli wrote:
> On Freitag, 20. August 2021 21:02:16 CEST Pierre-Louis Bossart wrote:
> > > +	regmap_read(i2s_tdm->regmap, I2S_CLR, &val);
> > > +	/* Wait on the clear operation to finish */
> > > +	while (val) {

> > delay needed here?

> The rockchip_i2s.c code doesn't have a delay here either, but I can
> add one of 1 usec for good measure, it seems weird to retry the
> read as fast as it can.

You should probably have a cpu_relax() in there at least.