The Renesas IDT821034 codec is a quad PCM codec with programmable gain. Signed-off-by: Herve Codina <herve.codina@xxxxxxxxxxx> --- .../bindings/sound/renesas,idt821034.yaml | 97 +++++++++++++++++++ 1 file changed, 97 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/renesas,idt821034.yaml diff --git a/Documentation/devicetree/bindings/sound/renesas,idt821034.yaml b/Documentation/devicetree/bindings/sound/renesas,idt821034.yaml new file mode 100644 index 000000000000..2c29b770e3f7 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/renesas,idt821034.yaml @@ -0,0 +1,97 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/sound/renesas,idt821034.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Renesas IDT821034 codec device + +maintainers: + - Herve Codina <herve.codina@xxxxxxxxxxx> + +description: | + The IDT821034 codec is a four channel PCM codec with onchip filters and + programmable gain setting. + + The time-slots used by the codec must be set and so, the properties + 'dai-tdm-slot-num', 'dai-tdm-slot-width', 'dai-tdm-slot-tx-mask' and + 'dai-tdm-slot-rx-mask' must be present in the ALSA sound card node for + sub-nodes that involve the codec. The codec uses one 8bit time-slot per + channel. + 'dai-tdm-tdm-slot-with' must be set to 8. + + The IDT821034 codec also supports 5 gpios (SLIC signals) per channel. + +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + - $ref: /schemas/gpio/gpio.yaml# + - $ref: dai-common.yaml# + +properties: + compatible: + const: renesas,idt821034 + + reg: + description: + SPI device address. + maxItems: 1 + + spi-max-frequency: + maximum: 8192000 + + spi-cpha: true + + '#sound-dai-cells': + const: 0 + + '#gpio-cells': + const: 2 + + gpio-controller: true + +required: + - compatible + - reg + - spi-cpha + - '#sound-dai-cells' + - gpio-controller + - '#gpio-cells' + +additionalProperties: false + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + spi0 { + #address-cells = <1>; + #size-cells = <0>; + codec: idt821034@0 { + compatible = "renesas,idt821034"; + reg = <0>; + spi-max-frequency = <8192000>; + spi-cpha; + #sound-dai-cells = <0>; + gpio-controller; + #gpio-cells = <2>; + }; + }; + sound { + compatible = "simple-audio-card"; + #address-cells = <1>; + #size-cells = <0>; + simple-audio-card,dai-link@0 { + reg = <0>; + format = "dsp_b"; + cpu { + sound-dai = <&cpu_dai>; + }; + codec { + sound-dai = <&codec>; + dai-tdm-slot-num = <4>; + dai-tdm-slot-width = <8>; + /* TS 2, 3, 5, 7 */ + dai-tdm-slot-tx-mask = <0 0 1 1 0 1 0 1>; + dai-tdm-slot-rx-mask = <0 0 1 1 0 1 0 1>; + }; + }; + }; -- 2.38.1
