From: Viorel Suman <viorel.suman@nxp.com> To: Liam Girdwood <lgirdwood@gmail.com>, Mark Brown <broonie@kernel.org>, Rob Herring <robh+dt@kernel.org>, Mark Rutland <mark.rutland@arm.com>, Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>, Timur Tabi <timur@kernel.org>, Nicolin Chen <nicoleotsuka@gmail.com>, Xiubo Li <Xiubo.Lee@gmail.com>, Fabio Estevam <fabio.estevam@nxp.com>, Viorel Suman <viorel.suman@nxp.com>, "S.j. Wang" <shengjiu.wang@nxp.com>, Daniel Baluta <daniel.baluta@nxp.com>, Cosmin Samoila <cosmin.samoila@nxp.com> Cc: "alsa-devel@alsa-project.org" <alsa-devel@alsa-project.org>, "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, "linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>, dl-linux-imx <linux-imx@nxp.com>, Viorel Suman <viorel.suman@gmail.com> Subject: [PATCH v2 2/4] ASoC: add fsl_audmix DT binding documentation Date: Tue, 8 Jan 2019 13:05:47 +0000 [thread overview] Message-ID: <1546952716-2743-3-git-send-email-viorel.suman@nxp.com> (raw) In-Reply-To: <1546952716-2743-1-git-send-email-viorel.suman@nxp.com> Add the DT binding documentation for NXP Audio Mixer CPU DAI driver. Signed-off-by: Viorel Suman <viorel.suman@nxp.com> --- .../devicetree/bindings/sound/fsl,audmix.txt | 44 ++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/fsl,audmix.txt diff --git a/Documentation/devicetree/bindings/sound/fsl,audmix.txt b/Documentation/devicetree/bindings/sound/fsl,audmix.txt new file mode 100644 index 0000000..512d39b --- /dev/null +++ b/Documentation/devicetree/bindings/sound/fsl,audmix.txt @@ -0,0 +1,44 @@ +NXP Audio Mixer (AUDMIX). + +The Audio Mixer is a on-chip functional module that allows mixing of two +audio streams into a single audio stream. Audio Mixer has two input serial +audio interfaces. These are driven by two Synchronous Audio interface +modules (SAI). Each input serial interface carries 8 audio channels in its +frame in TDM manner. Mixer mixes audio samples of corresponding channels +from two interfaces into a single sample. Before mixing, audio samples of +two inputs can be attenuated based on configuration. The output of the +Audio Mixer is also a serial audio interface. Like input interfaces it has +the same TDM frame format. This output is used to drive the serial DAC TDM +interface of audio codec and also sent to the external pins along with the +receive path of normal audio SAI module for readback by the CPU. + +The output of Audio Mixer can be selected from any of the three streams + - serial audio input 1 + - serial audio input 2 + - mixed audio + +Mixing operation is independent of audio sample rate but the two audio +input streams must have same audio sample rate with same number of channels +in TDM frame to be eligible for mixing. + +Device driver required properties: +================================= + - compatible : Compatible list, contains "fsl,imx8qm-audmix" + + - reg : Offset and length of the register set for the device. + + - clocks : Must contain an entry for each entry in clock-names. + + - clock-names : Must include the "ipg" for register access. + + - power-domains : Must contain the phandle to AUDMIX power domain node + +Device driver configuration example: +====================================== + audmix: audmix@59840000 { + compatible = "fsl,imx8qm-audmix"; + reg = <0x0 0x59840000 0x0 0x10000>; + clocks = <&clk IMX8QXP_AUD_AUDMIX_IPG>; + clock-names = "ipg"; + power-domains = <&pd_audmix>; + }; -- 2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: Viorel Suman <viorel.suman@nxp.com> To: Liam Girdwood <lgirdwood@gmail.com>, Mark Brown <broonie@kernel.org>, Rob Herring <robh+dt@kernel.org>, Mark Rutland <mark.rutland@arm.com>, Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>, Timur Tabi <timur@kernel.org>, Nicolin Chen <nicoleotsuka@gmail.com>, Xiubo Li <Xiubo.Lee@gmail.com>, Fabio Estevam <fabio.estevam@nxp.com>, Viorel Suman <viorel.suman@nxp.com>, "S.j. Wang" <shengjiu.wang@nxp.com>, Daniel Baluta <daniel.baluta@nxp.com>, Cosmin Samoila <cosmin.samoila@nxp.com> Cc: "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>, "alsa-devel@alsa-project.org" <alsa-devel@alsa-project.org>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, Viorel Suman <viorel.suman@gmail.com>, dl-linux-imx <linux-imx@nxp.com>, "linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org> Subject: [PATCH v2 2/4] ASoC: add fsl_audmix DT binding documentation Date: Tue, 8 Jan 2019 13:05:47 +0000 [thread overview] Message-ID: <1546952716-2743-3-git-send-email-viorel.suman@nxp.com> (raw) In-Reply-To: <1546952716-2743-1-git-send-email-viorel.suman@nxp.com> Add the DT binding documentation for NXP Audio Mixer CPU DAI driver. Signed-off-by: Viorel Suman <viorel.suman@nxp.com> --- .../devicetree/bindings/sound/fsl,audmix.txt | 44 ++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/fsl,audmix.txt diff --git a/Documentation/devicetree/bindings/sound/fsl,audmix.txt b/Documentation/devicetree/bindings/sound/fsl,audmix.txt new file mode 100644 index 0000000..512d39b --- /dev/null +++ b/Documentation/devicetree/bindings/sound/fsl,audmix.txt @@ -0,0 +1,44 @@ +NXP Audio Mixer (AUDMIX). + +The Audio Mixer is a on-chip functional module that allows mixing of two +audio streams into a single audio stream. Audio Mixer has two input serial +audio interfaces. These are driven by two Synchronous Audio interface +modules (SAI). Each input serial interface carries 8 audio channels in its +frame in TDM manner. Mixer mixes audio samples of corresponding channels +from two interfaces into a single sample. Before mixing, audio samples of +two inputs can be attenuated based on configuration. The output of the +Audio Mixer is also a serial audio interface. Like input interfaces it has +the same TDM frame format. This output is used to drive the serial DAC TDM +interface of audio codec and also sent to the external pins along with the +receive path of normal audio SAI module for readback by the CPU. + +The output of Audio Mixer can be selected from any of the three streams + - serial audio input 1 + - serial audio input 2 + - mixed audio + +Mixing operation is independent of audio sample rate but the two audio +input streams must have same audio sample rate with same number of channels +in TDM frame to be eligible for mixing. + +Device driver required properties: +================================= + - compatible : Compatible list, contains "fsl,imx8qm-audmix" + + - reg : Offset and length of the register set for the device. + + - clocks : Must contain an entry for each entry in clock-names. + + - clock-names : Must include the "ipg" for register access. + + - power-domains : Must contain the phandle to AUDMIX power domain node + +Device driver configuration example: +====================================== + audmix: audmix@59840000 { + compatible = "fsl,imx8qm-audmix"; + reg = <0x0 0x59840000 0x0 0x10000>; + clocks = <&clk IMX8QXP_AUD_AUDMIX_IPG>; + clock-names = "ipg"; + power-domains = <&pd_audmix>; + }; -- 2.7.4
next prev parent reply other threads:[~2019-01-08 13:06 UTC|newest] Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-01-08 13:05 [PATCH v2 0/4] Add NXP AUDMIX device and machine drivers Viorel Suman 2019-01-08 13:05 ` Viorel Suman 2019-01-08 13:05 ` [PATCH v2 1/4] ASoC: fsl: Add Audio Mixer CPU DAI driver Viorel Suman 2019-01-08 13:05 ` Viorel Suman 2019-01-08 13:05 ` Viorel Suman [this message] 2019-01-08 13:05 ` [PATCH v2 2/4] ASoC: add fsl_audmix DT binding documentation Viorel Suman 2019-01-15 20:54 ` Rob Herring 2019-01-15 20:54 ` Rob Herring 2019-01-15 20:54 ` Rob Herring 2019-01-08 13:05 ` [PATCH v2 3/4] ASoC: fsl: Add Audio Mixer machine driver Viorel Suman 2019-01-08 13:05 ` Viorel Suman 2019-01-08 13:05 ` [PATCH v2 4/4] ASoC: add imx-audmix DT binding documentation Viorel Suman 2019-01-08 13:05 ` Viorel Suman 2019-01-15 20:57 ` Rob Herring 2019-01-15 20:57 ` Rob Herring 2019-01-16 8:21 ` [alsa-devel] " Daniel Baluta 2019-01-16 8:21 ` Daniel Baluta 2019-01-16 14:57 ` Rob Herring 2019-01-16 14:57 ` Rob Herring 2019-01-11 19:13 ` [PATCH v2 0/4] Add NXP AUDMIX device and machine drivers Nicolin Chen 2019-01-11 19:13 ` Nicolin Chen
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