Re: [alsa-devel] [PATCH 2/3] ASoC: dt-bindings: fsl_easrc: Add document for EASRC
Hi On Thu, Feb 13, 2020 at 1:26 AM Fabio Estevam wrote: > > On Wed, Feb 12, 2020 at 1:35 AM Shengjiu Wang 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. > Ok, will use i.MX8MN instead.
Re: [PATCH 2/3] ASoC: dt-bindings: fsl_easrc: Add document for EASRC
On Wed, Feb 12, 2020 at 1:35 AM Shengjiu Wang 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
> ---
> .../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 ..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@300C {
> + compatible = "fsl,imx8mn-easrc";
> + reg = <0x0 0x300C 0x0 0x1>;
> + interrupts = ;
> + 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
>
[PATCH 2/3] ASoC: dt-bindings: fsl_easrc: Add document for EASRC
EASRC (Enhanced Asynchronous Sample Rate Converter) is a new
IP module found on i.MX815.
Signed-off-by: Shengjiu Wang
---
.../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 ..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@300C {
+ compatible = "fsl,imx8mn-easrc";
+ reg = <0x0 0x300C 0x0 0x1>;
+ interrupts = ;
+ 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
