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94bdfad3a6
Add a bclk field to struct snd_soc_dai and a helper function snd_soc_dai_set_bclk_clk() that platform drivers can use to declare which clock is their BCLK. Also cache the bclk_ratio in snd_soc_dai_set_bclk_ratio() so that the framework can use it later in hw_rule evaluation for TDM configurations where BCLK = rate * slots * slot_width. When multiple DAIs on the same card share the same physical BCLK (detected via clk_is_match()), the ASoC core can automatically constrain their hw_params so that the resulting BCLK rates are compatible. This commit adds the data structure support; the actual constraint logic follows in the next patch. Signed-off-by: Troy Mitchell <troy.mitchell@linux.spacemit.com> Link: https://patch.msgid.link/20260522-i2s-same-blk-v4-1-a71a86faaa20@linux.spacemit.com Signed-off-by: Mark Brown <broonie@kernel.org>