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Jerome Brunet 23d57b99ca ASoC: meson: axg-tdm-interface: fix mclk setup without mclk-fs

[ Upstream commit e3741a8d28a1137f8b19ae6f3d6e3be69a454a0a ]

By default, when mclk-fs is not provided, the tdm-interface driver
requests an MCLK that is 4x the bit clock, SCLK.

However there is no justification for this:

* If the codec needs MCLK for its operation, mclk-fs is expected to be set
  according to the codec requirements.
* If the codec does not need MCLK the minimum is 2 * SCLK, because this is
  minimum the divider between SCLK and MCLK can do.

Multiplying by 4 may cause problems because the PLL limit may be reached
sooner than it should, so use 2x instead.

Fixes: d60e4f1e4be5 ("ASoC: meson: add tdm interface driver")
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Link: https://msgid.link/r/20240223175116.2005407-2-jbrunet@baylibre.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2024-03-26 18:22:22 -04:00

axg-card.c

ASoC: meson: fixes the missed kfree() for axg_card_add_tdm_loopback

2020-08-19 08:16:13 +02:00

axg-fifo.c

ASoC: meson: add missing free_irq() in error path

2020-06-24 17:50:19 +02:00

axg-fifo.h

ASoC: meson: axg-fifo: fix fifo threshold setup

2020-02-11 04:35:44 -08:00

axg-frddr.c

ASoC: meson: axg-fifo: fix fifo threshold setup