From e3741a8d28a1137f8b19ae6f3d6e3be69a454a0a Mon Sep 17 00:00:00 2001 From: Jerome Brunet Date: Fri, 23 Feb 2024 18:51:07 +0100 Subject: ASoC: meson: axg-tdm-interface: fix mclk setup without mclk-fs 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 Link: https://msgid.link/r/20240223175116.2005407-2-jbrunet@baylibre.com Signed-off-by: Mark Brown --- sound/soc/meson/axg-tdm-interface.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'sound/soc/meson') diff --git a/sound/soc/meson/axg-tdm-interface.c b/sound/soc/meson/axg-tdm-interface.c index 1c3d433cefd2..cd5168e826df 100644 --- a/sound/soc/meson/axg-tdm-interface.c +++ b/sound/soc/meson/axg-tdm-interface.c @@ -264,8 +264,8 @@ static int axg_tdm_iface_set_sclk(struct snd_soc_dai *dai, srate = iface->slots * iface->slot_width * params_rate(params); if (!iface->mclk_rate) { - /* If no specific mclk is requested, default to bit clock * 4 */ - clk_set_rate(iface->mclk, 4 * srate); + /* If no specific mclk is requested, default to bit clock * 2 */ + clk_set_rate(iface->mclk, 2 * srate); } else { /* Check if we can actually get the bit clock from mclk */ if (iface->mclk_rate % srate) { -- cgit v1.2.3