Re: [PATCH v4 7/8] ASoC: dt-bindings: fsl_easrc: Add document for EASRC
From: Rob Herring <robh@kernel.org>
Date: 2020-03-03 01:46:45
Also in:
alsa-devel, linux-devicetree, linuxppc-dev, lkml
On Sun, Mar 01, 2020 at 01:24:18PM +0800, Shengjiu Wang wrote:
quoted hunk ↗ jump to hunk
EASRC (Enhanced Asynchronous Sample Rate Converter) is a new IP module found on i.MX8MN. Signed-off-by: Shengjiu Wang <redacted> --- .../devicetree/bindings/sound/fsl,easrc.yaml | 96 +++++++++++++++++++ 1 file changed, 96 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/fsl,easrc.yamldiff --git a/Documentation/devicetree/bindings/sound/fsl,easrc.yaml b/Documentation/devicetree/bindings/sound/fsl,easrc.yaml new file mode 100644 index 000000000000..500af8f0c8f0 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/fsl,easrc.yaml@@ -0,0 +1,96 @@ +# SPDX-License-Identifier: GPL-2.0
Dual license new bindings: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2 +--- +$id: http://devicetree.org/schemas/sound/fsl,easrc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: NXP Asynchronous Sample Rate Converter (ASRC) Controller + +maintainers: + - Shengjiu Wang [off-list ref] + +properties: + $nodename: + pattern: "^easrc@.*" + + compatible: + oneOf: + - items:
You can drop oneOf and items here.
+ - enum: + - fsl,imx8mn-easrc
Blank line between properties please.
+ reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + items: + - description: Peripheral clock + + clock-names: + items: + - const: mem + + dmas: + maxItems: 8 + + dma-names: + oneOf:
Drop oneOf as there is only one.
+ - items: + - const: ctx0_rx + - const: ctx0_tx + - const: ctx1_rx + - const: ctx1_tx + - const: ctx2_rx + - const: ctx2_tx + - const: ctx3_rx + - const: ctx3_tx + + fsl,easrc-ram-script-name: + $ref: /schemas/types.yaml#/definitions/string + description: The coefficient table for the filters
Need to define the exact string(s).
+ + fsl,asrc-rate: + $ref: /schemas/types.yaml#/definitions/uint32 + description: Defines a mutual sample rate used by DPCM Back Ends
Constraints?
+ + fsl,asrc-format: + $ref: /schemas/types.yaml#/definitions/uint32 + description: Defines a mutual sample format used by DPCM Back Ends
Constraints?
+ +required: + - compatible + - reg + - interrupts + - clocks + - clock-names + - dmas + - dma-name
dma-names
+ - fsl,easrc-ram-script-name
+ - fsl,asrc-rate
+ - fsl,asrc-format
+
+examples:
+ - |
+ #include <dt-bindings/clock/imx8mn-clock.h>
+
+ easrc: easrc@300C0000 {
+ compatible = "fsl,imx8mn-easrc";
+ reg = <0x0 0x300C0000 0x0 0x10000>;
+ interrupts = <0x0 122 0x4>;
+ 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-format = <2>;
+ status = "disabled";Don't show status in examples.
+ }; -- 2.21.0
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