1Qualcomm Audio Front End (Q6AFE) binding 2 3AFE is one of the APR audio service on Q6DSP 4Please refer to qcom,apr.txt for details of the common apr service bindings 5used by all apr services. Must contain the following properties. 6 7- compatible: 8 Usage: required 9 Value type: <stringlist> 10 Definition: must be "qcom,q6afe-v<MAJOR-NUMBER>.<MINOR-NUMBER>" 11 Or "qcom,q6afe" where the version number can be queried 12 from DSP. 13 example "qcom,q6afe" 14 15= AFE DAIs (Digial Audio Interface) 16"dais" subnode of the AFE node. It represents afe dais, each afe dai is a 17subnode of "dais" representing board specific dai setup. 18"dais" node should have following properties followed by dai children. 19 20- compatible: 21 Usage: required 22 Value type: <stringlist> 23 Definition: must be "qcom,q6afe-dais" 24 25- #sound-dai-cells 26 Usage: required 27 Value type: <u32> 28 Definition: Must be 1 29 30- #address-cells 31 Usage: required 32 Value type: <u32> 33 Definition: Must be 1 34 35- #size-cells 36 Usage: required 37 Value type: <u32> 38 Definition: Must be 0 39 40== AFE DAI is subnode of "dais" and represent a dai, it includes board specific 41configuration of each dai. Must contain the following properties. 42 43- reg 44 Usage: required 45 Value type: <u32> 46 Definition: Must be dai id 47 48- qcom,sd-lines 49 Usage: required for mi2s interface 50 Value type: <prop-encoded-array> 51 Definition: Must be list of serial data lines used by this dai. 52 should be one or more of the 0-3 sd lines. 53 54 - qcom,tdm-sync-mode: 55 Usage: required for tdm interface 56 Value type: <prop-encoded-array> 57 Definition: Synchronization mode. 58 0 - Short sync bit mode 59 1 - Long sync mode 60 2 - Short sync slot mode 61 62 - qcom,tdm-sync-src: 63 Usage: required for tdm interface 64 Value type: <prop-encoded-array> 65 Definition: Synchronization source. 66 0 - External source 67 1 - Internal source 68 69 - qcom,tdm-data-out: 70 Usage: required for tdm interface 71 Value type: <prop-encoded-array> 72 Definition: Data out signal to drive with other masters. 73 0 - Disable 74 1 - Enable 75 76 - qcom,tdm-invert-sync: 77 Usage: required for tdm interface 78 Value type: <prop-encoded-array> 79 Definition: Invert the sync. 80 0 - Normal 81 1 - Invert 82 83 - qcom,tdm-data-delay: 84 Usage: required for tdm interface 85 Value type: <prop-encoded-array> 86 Definition: Number of bit clock to delay data 87 with respect to sync edge. 88 0 - 0 bit clock cycle 89 1 - 1 bit clock cycle 90 2 - 2 bit clock cycle 91 92 - qcom,tdm-data-align: 93 Usage: required for tdm interface 94 Value type: <prop-encoded-array> 95 Definition: Indicate how data is packed 96 within the slot. For example, 32 slot width in case of 97 sample bit width is 24. 98 0 - MSB 99 1 - LSB 100 101= EXAMPLE 102 103apr-service@4 { 104 compatible = "qcom,q6afe"; 105 reg = <APR_SVC_AFE>; 106 107 dais { 108 compatible = "qcom,q6afe-dais"; 109 #sound-dai-cells = <1>; 110 #address-cells = <1>; 111 #size-cells = <0>; 112 113 dai@1 { 114 reg = <HDMI_RX>; 115 }; 116 117 dai@24 { 118 reg = <PRIMARY_TDM_RX_0>; 119 qcom,tdm-sync-mode = <1>: 120 qcom,tdm-sync-src = <1>; 121 qcom,tdm-data-out = <0>; 122 qcom,tdm-invert-sync = <1>; 123 qcom,tdm-data-delay = <1>; 124 qcom,tdm-data-align = <0>; 125 126 }; 127 128 dai@25 { 129 reg = <PRIMARY_TDM_TX_0>; 130 qcom,tdm-sync-mode = <1>: 131 qcom,tdm-sync-src = <1>; 132 qcom,tdm-data-out = <0>; 133 qcom,tdm-invert-sync = <1>; 134 qcom,tdm-data-delay <1>: 135 qcom,tdm-data-align = <0>; 136 }; 137 138 dai@16 { 139 reg = <PRIMARY_MI2S_RX>; 140 qcom,sd-lines = <0 2>; 141 }; 142 143 dai@17 { 144 reg = <PRIMARY_MI2S_TX>; 145 qcom,sd-lines = <1>; 146 }; 147 148 dai@18 { 149 reg = <SECONDARY_MI2S_RX>; 150 qcom,sd-lines = <0 3>; 151 }; 152 153 dai@19 { 154 reg = <SECONDARY_MI2S_TX>; 155 qcom,sd-lines = <1>; 156 }; 157 158 dai@20 { 159 reg = <TERTIARY_MI2S_RX>; 160 qcom,sd-lines = <1 3>; 161 }; 162 163 dai@21 { 164 reg = <TERTIARY_MI2S_TX>; 165 qcom,sd-lines = <0>; 166 }; 167 168 dai@22 { 169 reg = <QUATERNARY_MI2S_RX>; 170 qcom,sd-lines = <0>; 171 }; 172 173 dai@23 { 174 reg = <QUATERNARY_MI2S_TX>; 175 qcom,sd-lines = <1>; 176 }; 177 }; 178}; 179