179 lines
3.7 KiB
Plaintext
179 lines
3.7 KiB
Plaintext
Qualcomm Audio Front End (Q6AFE) binding
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AFE is one of the APR audio service on Q6DSP
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Please refer to qcom,apr.txt for details of the common apr service bindings
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used by all apr services. Must contain the following properties.
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- compatible:
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Usage: required
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Value type: <stringlist>
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Definition: must be "qcom,q6afe-v<MAJOR-NUMBER>.<MINOR-NUMBER>"
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Or "qcom,q6afe" where the version number can be queried
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from DSP.
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example "qcom,q6afe"
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= AFE DAIs (Digial Audio Interface)
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"dais" subnode of the AFE node. It represents afe dais, each afe dai is a
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subnode of "dais" representing board specific dai setup.
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"dais" node should have following properties followed by dai children.
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- compatible:
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Usage: required
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Value type: <stringlist>
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Definition: must be "qcom,q6afe-dais"
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- #sound-dai-cells
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Usage: required
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Value type: <u32>
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Definition: Must be 1
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- #address-cells
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Usage: required
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Value type: <u32>
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Definition: Must be 1
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- #size-cells
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Usage: required
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Value type: <u32>
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Definition: Must be 0
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== AFE DAI is subnode of "dais" and represent a dai, it includes board specific
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configuration of each dai. Must contain the following properties.
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- reg
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Usage: required
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Value type: <u32>
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Definition: Must be dai id
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- qcom,sd-lines
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Usage: required for mi2s interface
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Value type: <prop-encoded-array>
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Definition: Must be list of serial data lines used by this dai.
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should be one or more of the 1-4 sd lines.
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- qcom,tdm-sync-mode:
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Usage: required for tdm interface
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Value type: <prop-encoded-array>
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Definition: Synchronization mode.
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0 - Short sync bit mode
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1 - Long sync mode
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2 - Short sync slot mode
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- qcom,tdm-sync-src:
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Usage: required for tdm interface
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Value type: <prop-encoded-array>
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Definition: Synchronization source.
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0 - External source
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1 - Internal source
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- qcom,tdm-data-out:
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Usage: required for tdm interface
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Value type: <prop-encoded-array>
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Definition: Data out signal to drive with other masters.
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0 - Disable
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1 - Enable
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- qcom,tdm-invert-sync:
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Usage: required for tdm interface
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Value type: <prop-encoded-array>
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Definition: Invert the sync.
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0 - Normal
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1 - Invert
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- qcom,tdm-data-delay:
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Usage: required for tdm interface
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Value type: <prop-encoded-array>
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Definition: Number of bit clock to delay data
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with respect to sync edge.
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0 - 0 bit clock cycle
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1 - 1 bit clock cycle
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2 - 2 bit clock cycle
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- qcom,tdm-data-align:
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Usage: required for tdm interface
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Value type: <prop-encoded-array>
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Definition: Indicate how data is packed
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within the slot. For example, 32 slot width in case of
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sample bit width is 24.
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0 - MSB
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1 - LSB
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= EXAMPLE
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q6afe@4 {
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compatible = "qcom,q6afe";
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reg = <APR_SVC_AFE>;
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dais {
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compatible = "qcom,q6afe-dais";
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#sound-dai-cells = <1>;
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#address-cells = <1>;
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#size-cells = <0>;
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hdmi@1 {
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reg = <1>;
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};
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tdm@24 {
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reg = <24>;
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qcom,tdm-sync-mode = <1>:
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qcom,tdm-sync-src = <1>;
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qcom,tdm-data-out = <0>;
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qcom,tdm-invert-sync = <1>;
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qcom,tdm-data-delay = <1>;
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qcom,tdm-data-align = <0>;
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};
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tdm@25 {
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reg = <25>;
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qcom,tdm-sync-mode = <1>:
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qcom,tdm-sync-src = <1>;
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qcom,tdm-data-out = <0>;
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qcom,tdm-invert-sync = <1>;
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qcom,tdm-data-delay <1>:
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qcom,tdm-data-align = <0>;
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};
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prim-mi2s-rx@16 {
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reg = <16>;
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qcom,sd-lines = <1 3>;
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};
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prim-mi2s-tx@17 {
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reg = <17>;
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qcom,sd-lines = <2>;
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};
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sec-mi2s-rx@18 {
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reg = <18>;
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qcom,sd-lines = <1 4>;
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};
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sec-mi2s-tx@19 {
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reg = <19>;
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qcom,sd-lines = <2>;
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};
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tert-mi2s-rx@20 {
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reg = <20>;
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qcom,sd-lines = <2 4>;
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};
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tert-mi2s-tx@21 {
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reg = <21>;
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qcom,sd-lines = <1>;
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};
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quat-mi2s-rx@22 {
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reg = <22>;
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qcom,sd-lines = <1>;
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};
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quat-mi2s-tx@23 {
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reg = <23>;
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qcom,sd-lines = <2>;
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};
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};
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};
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