From: Rob Herring <robh@kernel.org>
To: Stephan Gerhold <stephan@gerhold.net>
Cc: Rob Herring <robh+dt@kernel.org>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Liam Girdwood <lgirdwood@gmail.com>,
linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
alsa-devel@alsa-project.org,
Banajit Goswami <bgoswami@codeaurora.org>,
Mark Brown <broonie@kernel.org>,
~postmarketos/upstreaming@lists.sr.ht
Subject: Re: [PATCH 4/5] ASoC: dt-bindings: qcom: Document qcom,msm8916-qdsp6-sndcard compatible
Date: Mon, 13 Dec 2021 14:24:33 -0600 [thread overview]
Message-ID: <YbesAWThTrpKxzZa@robh.at.kernel.org> (raw)
In-Reply-To: <20211202145505.58852-5-stephan@gerhold.net>
On Thu, 02 Dec 2021 15:55:04 +0100, Stephan Gerhold wrote:
> There are two possible audio setups on MSM8916/APQ8016: Normally the audio
> is routed through the audio/modem DSP (covered by the qdsp6 driver). During
> upstreaming for the DragonBoard 410c it was decided to bypass it and
> instead talk directly to the audio controller using the "lpass" driver.
>
> Bypassing the DSP gives more control about the audio configuration but limits
> the functionality: For example, routing audio through the audio/modem DSP is
> strictly required for voice call audio. Also, without the special changes in
> the DB410c firmware other MSM8916 devices can only use the bypass as long as
> the modem DSP is not started. Otherwise, the firmware will assume control of
> the LPASS hardware block and audio is no longer functional.
>
> Add support for using the DSP audio setup instead using a new
> "qcom,msm8916-qdsp6-sndcard" compatible. It is basically a mixture of
> the apq8016-sbc-sndcard and the newer sm8250-sndcard, which uses
> indirect QDSP6 DAI links instead of the direct LPASS DAI links.
>
> Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
> Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
> ---
> .../bindings/sound/qcom,sm8250.yaml | 42 +++++++++++++++++++
> 1 file changed, 42 insertions(+)
>
Reviewed-by: Rob Herring <robh@kernel.org>
WARNING: multiple messages have this Message-ID (diff)
From: Rob Herring <robh@kernel.org>
To: Stephan Gerhold <stephan@gerhold.net>
Cc: devicetree@vger.kernel.org, alsa-devel@alsa-project.org,
Banajit Goswami <bgoswami@codeaurora.org>,
linux-arm-msm@vger.kernel.org, Mark Brown <broonie@kernel.org>,
Liam Girdwood <lgirdwood@gmail.com>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
~postmarketos/upstreaming@lists.sr.ht
Subject: Re: [PATCH 4/5] ASoC: dt-bindings: qcom: Document qcom,msm8916-qdsp6-sndcard compatible
Date: Mon, 13 Dec 2021 14:24:33 -0600 [thread overview]
Message-ID: <YbesAWThTrpKxzZa@robh.at.kernel.org> (raw)
In-Reply-To: <20211202145505.58852-5-stephan@gerhold.net>
On Thu, 02 Dec 2021 15:55:04 +0100, Stephan Gerhold wrote:
> There are two possible audio setups on MSM8916/APQ8016: Normally the audio
> is routed through the audio/modem DSP (covered by the qdsp6 driver). During
> upstreaming for the DragonBoard 410c it was decided to bypass it and
> instead talk directly to the audio controller using the "lpass" driver.
>
> Bypassing the DSP gives more control about the audio configuration but limits
> the functionality: For example, routing audio through the audio/modem DSP is
> strictly required for voice call audio. Also, without the special changes in
> the DB410c firmware other MSM8916 devices can only use the bypass as long as
> the modem DSP is not started. Otherwise, the firmware will assume control of
> the LPASS hardware block and audio is no longer functional.
>
> Add support for using the DSP audio setup instead using a new
> "qcom,msm8916-qdsp6-sndcard" compatible. It is basically a mixture of
> the apq8016-sbc-sndcard and the newer sm8250-sndcard, which uses
> indirect QDSP6 DAI links instead of the direct LPASS DAI links.
>
> Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
> Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
> ---
> .../bindings/sound/qcom,sm8250.yaml | 42 +++++++++++++++++++
> 1 file changed, 42 insertions(+)
>
Reviewed-by: Rob Herring <robh@kernel.org>
next prev parent reply other threads:[~2021-12-13 20:24 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-02 14:55 [PATCH 0/5] ASoC: qcom: apq8016_sbc: Allow routing audio through QDSP6 Stephan Gerhold
2021-12-02 14:55 ` Stephan Gerhold
2021-12-02 14:55 ` [PATCH 1/5] ASoC: dt-bindings: qcom: sm8250: Drop redundant MultiMedia routes Stephan Gerhold
2021-12-02 14:55 ` Stephan Gerhold
2021-12-13 20:21 ` Rob Herring
2021-12-13 20:21 ` Rob Herring
2021-12-02 14:55 ` [PATCH 2/5] ASoC: dt-bindings: qcom: sm8250: Document "aux-devs" Stephan Gerhold
2021-12-02 14:55 ` Stephan Gerhold
2021-12-13 20:21 ` Rob Herring
2021-12-13 20:21 ` Rob Herring
2021-12-02 14:55 ` [PATCH 3/5] ASoC: dt-bindings: qcom: apq8016-sbc: Move to qcom,sm8250 DT schema Stephan Gerhold
2021-12-02 14:55 ` [PATCH 3/5] ASoC: dt-bindings: qcom: apq8016-sbc: Move to qcom, sm8250 " Stephan Gerhold
2021-12-13 20:23 ` [PATCH 3/5] ASoC: dt-bindings: qcom: apq8016-sbc: Move to qcom,sm8250 " Rob Herring
2021-12-13 20:23 ` Rob Herring
2021-12-02 14:55 ` [PATCH 4/5] ASoC: dt-bindings: qcom: Document qcom,msm8916-qdsp6-sndcard compatible Stephan Gerhold
2021-12-02 14:55 ` [PATCH 4/5] ASoC: dt-bindings: qcom: Document qcom, msm8916-qdsp6-sndcard compatible Stephan Gerhold
2021-12-13 20:24 ` Rob Herring [this message]
2021-12-13 20:24 ` [PATCH 4/5] ASoC: dt-bindings: qcom: Document qcom,msm8916-qdsp6-sndcard compatible Rob Herring
2021-12-02 14:55 ` [PATCH 5/5] ASoC: qcom: apq8016_sbc: Allow routing audio through QDSP6 Stephan Gerhold
2021-12-02 14:55 ` Stephan Gerhold
2021-12-03 10:35 ` Srinivas Kandagatla
2021-12-03 10:35 ` Srinivas Kandagatla
2021-12-03 14:36 ` Stephan Gerhold
2021-12-03 14:36 ` Stephan Gerhold
2021-12-03 14:52 ` Srinivas Kandagatla
2021-12-03 14:52 ` Srinivas Kandagatla
2021-12-03 15:09 ` Stephan Gerhold
2021-12-03 15:09 ` Stephan Gerhold
2021-12-03 15:27 ` Srinivas Kandagatla
2021-12-03 15:27 ` Srinivas Kandagatla
2021-12-03 10:34 ` [PATCH 0/5] " Srinivas Kandagatla
2021-12-03 10:34 ` Srinivas Kandagatla
2021-12-14 13:25 ` Mark Brown
2021-12-14 13:25 ` Mark Brown
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