From: Fabio Estevam <festevam@gmail.com>
To: Shengjiu Wang <shengjiu.wang@nxp.com>
Cc: Mark Rutland <mark.rutland@arm.com>,
"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
<devicetree@vger.kernel.org>,
Linux-ALSA <alsa-devel@alsa-project.org>,
Timur Tabi <timur@kernel.org>, Xiubo Li <Xiubo.Lee@gmail.com>,
linux-kernel <linux-kernel@vger.kernel.org>,
Takashi Iwai <tiwai@suse.com>,
Liam Girdwood <lgirdwood@gmail.com>,
Rob Herring <robh+dt@kernel.org>,
Jaroslav Kysela <perex@perex.cz>,
Nicolin Chen <nicoleotsuka@gmail.com>,
Mark Brown <broonie@kernel.org>,
linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH 2/3] ASoC: dt-bindings: fsl_easrc: Add document for EASRC
Date: Wed, 12 Feb 2020 14:24:40 -0300 [thread overview]
Message-ID: <CAOMZO5Do=dzh4WXvm44mB7-PeesWuA6qRtMXwHCH9piXd1dZEw@mail.gmail.com> (raw)
In-Reply-To: <1ae9af586a2003e23885ccc7ef58ee2b1dce29f7.1581475981.git.shengjiu.wang@nxp.com>
On Wed, Feb 12, 2020 at 1:35 AM Shengjiu Wang <shengjiu.wang@nxp.com> wrote:
>
> EASRC (Enhanced Asynchronous Sample Rate Converter) is a new
> IP module found on i.MX815.
i.MX815 in an internal terminology. Please avoid it on the commit log.
>
> Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
> ---
> .../devicetree/bindings/sound/fsl,easrc.txt | 57 +++++++++++++++++++
> 1 file changed, 57 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/sound/fsl,easrc.txt
>
> diff --git a/Documentation/devicetree/bindings/sound/fsl,easrc.txt b/Documentation/devicetree/bindings/sound/fsl,easrc.txt
> new file mode 100644
> index 000000000000..0e8153165e3b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/fsl,easrc.txt
> @@ -0,0 +1,57 @@
> +NXP Asynchronous Sample Rate Converter (ASRC) Controller
> +
> +The Asynchronous Sample Rate Converter (ASRC) converts the sampling rate of a
> +signal associated with an input clock into a signal associated with a different
> +output clock. The driver currently works as a Front End of DPCM with other Back
> +Ends Audio controller such as ESAI, SSI and SAI. It has four context to support
> +four substreams within totally 32 channels.
> +
> +Required properties:
> +- compatible: Contains "fsl,imx8mn-easrc".
> +
> +- reg: Offset and length of the register set for the
> + device.
> +
> +- interrupts: Contains the asrc interrupt.
> +
> +- dmas: Generic dma devicetree binding as described in
> + Documentation/devicetree/bindings/dma/dma.txt.
> +
> +- dma-names: Contains "ctx0_rx", "ctx0_tx",
> + "ctx1_rx", "ctx1_tx",
> + "ctx2_rx", "ctx2_tx",
> + "ctx3_rx", "ctx3_tx".
> +
> +- clocks: Contains an entry for each entry in clock-names.
> +
> +- clock-names: "mem" - Peripheral clock to driver module.
> +
> +- fsl,easrc-ram-script-name: The coefficient table for the filters
> +
> +- fsl,asrc-rate: Defines a mutual sample rate used by DPCM Back
> + Ends.
> +
> +- fsl,asrc-width: Defines a mutual sample width used by DPCM Back
> + Ends.
> +
> +Example:
> +
> +easrc: easrc@300C0000 {
> + compatible = "fsl,imx8mn-easrc";
> + reg = <0x0 0x300C0000 0x0 0x10000>;
> + interrupts = <GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>;
> + clocks = <&clk IMX8MN_CLK_ASRC_ROOT>;
> + clock-names = "mem";
> + dmas = <&sdma2 16 23 0> , <&sdma2 17 23 0>,
> + <&sdma2 18 23 0> , <&sdma2 19 23 0>,
> + <&sdma2 20 23 0> , <&sdma2 21 23 0>,
> + <&sdma2 22 23 0> , <&sdma2 23 23 0>;
> + dma-names = "ctx0_rx", "ctx0_tx",
> + "ctx1_rx", "ctx1_tx",
> + "ctx2_rx", "ctx2_tx",
> + "ctx3_rx", "ctx3_tx";
> + fsl,easrc-ram-script-name = "imx/easrc/easrc-imx8mn.bin";
> + fsl,asrc-rate = <8000>;
> + fsl,asrc-width = <16>;
> + status = "disabled";
> +};
> --
> 2.21.0
>
next prev parent reply other threads:[~2020-02-12 17:26 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-12 4:30 [PATCH 0/3] Add new module driver for new ASRC Shengjiu Wang
2020-02-12 4:30 ` [PATCH 1/3] ASoC: fsl_asrc: Move common definition to fsl_asrc_common Shengjiu Wang
2020-02-12 4:30 ` [PATCH 2/3] ASoC: dt-bindings: fsl_easrc: Add document for EASRC Shengjiu Wang
2020-02-12 17:24 ` Fabio Estevam [this message]
2020-02-13 2:10 ` [alsa-devel] " Shengjiu Wang
2020-02-12 4:30 ` [PATCH 3/3] ASoC: fsl_easrc: Add EASRC ASoC CPU DAI and platform drivers Shengjiu Wang
2020-02-12 5:11 ` [PATCH 0/3] Add new module driver for new ASRC Randy Dunlap
2020-02-12 7:06 ` [alsa-devel] " Shengjiu Wang
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