On Mon, 19 Sep 2022 13:53:49 +0200, Pierre-Louis Bossart wrote: > > SOF topologies hard-code the MCLK used for SSP connections. That was a > bad idea in hindsight, this information should really come from BIOS > and/or machine driver. > > This patch introduces a helper to scan all SSP endpoints connected to > a codec, and all formats to see what MCLK is used. When BIT(0) of the > mdivc offset if set in the SSP blob, MCLK0 is used, and likewise when > BIT(1) is set MCLK1 is used. > > The case where both MCLKs are used is possible but has never been seen > in practice so should be treated as an error by the caller. > > Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx> > Reviewed-by: Kai Vehmanen <kai.vehmanen@xxxxxxxxxxxxxxx> > Reviewed-by: Bard Liao <yung-chuan.liao@xxxxxxxxxxxxxxx> Reviewed-by: Takashi Iwai <tiwai@xxxxxxx> thanks, Takashi
