linux-kernel - [PATCH v2 0/7] qrb4210-rb2: add HDMI audio playback support

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Message-ID: <20241002022015.867031-1-alexey.klimov@linaro.org>
Date: Wed,  2 Oct 2024 03:20:08 +0100
From: Alexey Klimov <alexey.klimov@...aro.org>
To: linux-sound@...r.kernel.org,
	srinivas.kandagatla@...aro.org,
	bgoswami@...cinc.com,
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Cc: robh@...nel.org,
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	konrad.dybcio@...aro.org,
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	dmitry.baryshkov@...aro.org,
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	alexey.klimov@...aro.org
Subject: [PATCH v2 0/7] qrb4210-rb2: add HDMI audio playback support

Rebased on top of -master, tested.

Changes since v1:
-- removed handling of MI2S clock in sm2450_snd_shutdown(): setting clock rate
   and disabling it causes audio delay on playback start;
-- removed empty sound { } node from sm6115.dtsi as suggested by Krzysztof;
-- moved lpi_i2s2_active pins description to qrb423310 board-specific file
   as suggested by Dmitry Baryshkov;
-- moved q6asmdai DAIs to apr soc node as suggested by Konrad Dybcio;
-- lpass_tlmm is not disabled;
-- lpass_tlmm node moved to sm4250.dtsi;
-- kept MultiMedia DAIs as is, without them the sound card driver doesn't initialise;
-- added some reviewed-by tags.

This series still keeps "qcom,qrb4210-rb2-sndcard" for sm8250 soundcard. As per
off the list discussion with Srini it was suggested to have it since in future it
may be required to add clocks, workarounds, quirks, model-specific things based on
this compatible. The same as for RB5 compatible in sm8250 snd driver.

This focuses on HDMI audio playback only hence there are no soundwire and dmic pins,
for instance. The work to enable playback via wcd+wsa8815 amplifier is in progress (it works)
and one of the routes is to merge such two patchsets together.

Link to prev series:
https://lore.kernel.org/linux-sound/20240628010715.438471-1-alexey.klimov@linaro.org/

Alexey Klimov (7):
  ASoC: dt-bindings: qcom,sm8250: add qrb4210-rb2-sndcard
  ASoC: qcom: sm8250: add qrb4210-rb2-sndcard compatible string
  ASoC: qcom: sm8250: add handling of secondary MI2S clock
  arm64: dts: qcom: sm6115: add apr and its services
  arm64: dts: qcom: sm4250: add LPASS LPI pin controller
  arm64: dts: qcom: qrb4210-rb2: add description of lpi_i2s2 pins
  arm64: dts: qcom: qrb4210-rb2: add HDMI audio playback support

 .../bindings/sound/qcom,sm8250.yaml           |  1 +
 arch/arm64/boot/dts/qcom/qrb4210-rb2.dts      | 91 +++++++++++++++++++
 arch/arm64/boot/dts/qcom/sm4250.dtsi          | 16 ++++
 arch/arm64/boot/dts/qcom/sm6115.dtsi          | 72 +++++++++++++++
 sound/soc/qcom/sm8250.c                       |  9 ++
 5 files changed, 189 insertions(+)

-- 
2.45.2