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ASoC: mediatek: mt2701: add optional HDMI audio path clocks

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The HDMI audio output path on MT2701/MT7623N is rooted in HADDS2PLL
and gated by the audio_hdmi, audio_spdf and audio_apll power gates.
Acquire these four clocks from device tree using devm_clk_get_optional
so that existing platforms which do not wire up HDMI audio keep
probing unchanged. Actual clock enable/prepare is deferred to the
upcoming HDMI DAI startup path.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Link: https://patch.msgid.link/5e24890acf597b04485145b5056ad8b161b4cbda.1776998727.git.daniel@makrotopia.org
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Daniel Golle 2026-04-24 03:49:18 +01:00 committed by Mark Brown
parent 3401cff9a9
commit 06efb5f1b7
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GPG Key ID: 24D68B725D5487D0
2 changed files with 26 additions and 0 deletions
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22
sound/soc/mediatek/mt2701/mt2701-afe-clock-ctrl.c
View File

@ -95,6 +95,28 @@ int mt2701_init_clock(struct mtk_base_afe *afe)
afe_priv->mrgif_ck = NULL;
}
/*
* Optional HDMI audio clocks. Platforms that do not wire up the
* HDMI output (e.g. MT2701 devkits using only the I2S BE DAIs)
* may omit these; in that case the HDMI BE DAI simply cannot be
* enabled, but the rest of the AFE still probes.
*/
afe_priv->hadds2pll_ck = devm_clk_get_optional(afe->dev, "hadds2pll_294m");
if (IS_ERR(afe_priv->hadds2pll_ck))
return PTR_ERR(afe_priv->hadds2pll_ck);
afe_priv->audio_hdmi_ck = devm_clk_get_optional(afe->dev, "audio_hdmi_pd");
if (IS_ERR(afe_priv->audio_hdmi_ck))
return PTR_ERR(afe_priv->audio_hdmi_ck);
afe_priv->audio_spdf_ck = devm_clk_get_optional(afe->dev, "audio_spdf_pd");
if (IS_ERR(afe_priv->audio_spdf_ck))
return PTR_ERR(afe_priv->audio_spdf_ck);
afe_priv->audio_apll_ck = devm_clk_get_optional(afe->dev, "audio_apll_pd");
if (IS_ERR(afe_priv->audio_apll_ck))
return PTR_ERR(afe_priv->audio_apll_ck);
return 0;
}

4
sound/soc/mediatek/mt2701/mt2701-afe-common.h
View File

@ -90,6 +90,10 @@ struct mt2701_afe_private {
struct mt2701_i2s_path *i2s_path;
struct clk *base_ck[MT2701_BASE_CLK_NUM];
struct clk *mrgif_ck;
struct clk *hadds2pll_ck;
struct clk *audio_hdmi_ck;
struct clk *audio_spdf_ck;
struct clk *audio_apll_ck;
bool mrg_enable[MTK_STREAM_NUM];
const struct mt2701_soc_variants *soc;