Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/sound/st,sti-asoc-card.txt
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1 STMicroelectronics sti ASoC cards 2 3 The sti ASoC Sound Card can be used, for all sti SoCs using internal sti-sas 4 codec or external codecs. 5 6 sti sound drivers allows to expose sti SoC audio interface through the 7 generic ASoC simple card. For details about sound card declaration please refer to 8 Documentation/devicetree/bindings/sound/simple-card.yaml. 9 10 1) sti-uniperiph-dai: audio dai device. 11 --------------------------------------- 12 13 Required properties: 14 - compatible: "st,stih407-uni-player-hdmi", "st,stih407-uni-player-pcm-out", 15 "st,stih407-uni-player-dac", "st,stih407-uni-player-spdif", 16 "st,stih407-uni-reader-pcm_in", "st,stih407-uni-reader-hdmi", 17 18 - st,syscfg: phandle to boot-device system configuration registers 19 20 - clock-names: name of the clocks listed in clocks property in the same order 21 22 - reg: CPU DAI IP Base address and size entries, listed in same 23 order than the CPU_DAI properties. 24 25 - reg-names: names of the mapped memory regions listed in regs property in 26 the same order. 27 28 - interrupts: CPU_DAI interrupt line, listed in the same order than the 29 CPU_DAI properties. 30 31 - dma: CPU_DAI DMA controller phandle and DMA request line, listed in the same 32 order than the CPU_DAI properties. 33 34 - dma-names: identifier string for each DMA request line in the dmas property. 35 "tx" for "st,sti-uni-player" compatibility 36 "rx" for "st,sti-uni-reader" compatibility 37 38 Required properties ("st,sti-uni-player" compatibility only): 39 - clocks: CPU_DAI IP clock source, listed in the same order than the 40 CPU_DAI properties. 41 42 Optional properties: 43 - pinctrl-0: defined for CPU_DAI@1 and CPU_DAI@4 to describe I2S PIOs for 44 external codecs connection. 45 46 - pinctrl-names: should contain only one value - "default". 47 48 - st,tdm-mode: to declare to set TDM mode for unireader and uniplayer IPs. 49 Only compartible with IPs in charge of the external I2S/TDM bus. 50 Should be declared depending on associated codec. 51 52 Example: 53 54 sti_uni_player1: sti-uni-player@8d81000 { 55 compatible = "st,stih407-uni-player-hdmi"; 56 #sound-dai-cells = <0>; 57 st,syscfg = <&syscfg_core>; 58 clocks = <&clk_s_d0_flexgen CLK_PCM_1>; 59 reg = <0x8D81000 0x158>; 60 interrupts = <GIC_SPI 85 IRQ_TYPE_NONE>; 61 dmas = <&fdma0 3 0 1>; 62 dma-names = "tx"; 63 st,tdm-mode = <1>; 64 }; 65 66 sti_uni_player2: sti-uni-player@8d82000 { 67 compatible = "st,stih407-uni-player-pcm-out"; 68 #sound-dai-cells = <0>; 69 st,syscfg = <&syscfg_core>; 70 clocks = <&clk_s_d0_flexgen CLK_PCM_2>; 71 reg = <0x8D82000 0x158>; 72 interrupts = <GIC_SPI 86 IRQ_TYPE_NONE>; 73 dmas = <&fdma0 4 0 1>; 74 dma-names = "tx"; 75 }; 76 77 sti_uni_player3: sti-uni-player@8d85000 { 78 compatible = "st,stih407-uni-player-spdif"; 79 #sound-dai-cells = <0>; 80 st,syscfg = <&syscfg_core>; 81 clocks = <&clk_s_d0_flexgen CLK_SPDIFF>; 82 reg = <0x8D85000 0x158>; 83 interrupts = <GIC_SPI 89 IRQ_TYPE_NONE>; 84 dmas = <&fdma0 7 0 1>; 85 dma-names = "tx"; 86 }; 87 88 sti_uni_reader1: sti-uni-reader@8d84000 { 89 compatible = "st,stih407-uni-reader-hdmi"; 90 #sound-dai-cells = <0>; 91 st,syscfg = <&syscfg_core>; 92 reg = <0x8D84000 0x158>; 93 interrupts = <GIC_SPI 88 IRQ_TYPE_NONE>; 94 dmas = <&fdma0 6 0 1>; 95 dma-names = "rx"; 96 }; 97 98 2) sti-sas-codec: internal audio codec IPs driver 99 ------------------------------------------------- 100 101 Required properties: 102 - compatible: "st,sti<chip>-sas-codec" . 103 Should be chip "st,stih416-sas-codec" or "st,stih407-sas-codec" 104 105 - st,syscfg: phandle to boot-device system configuration registers. 106 107 - pinctrl-0: SPDIF PIO description. 108 109 - pinctrl-names: should contain only one value - "default". 110 111 Example: 112 sti_sas_codec: sti-sas-codec { 113 compatible = "st,stih407-sas-codec"; 114 #sound-dai-cells = <1>; 115 st,reg_audio = <&syscfg_core>; 116 pinctrl-names = "default"; 117 pinctrl-0 = <&pinctrl_spdif_out >; 118 }; 119 120 Example of audio card declaration: 121 sound { 122 compatible = "simple-audio-card"; 123 simple-audio-card,name = "sti audio card"; 124 125 simple-audio-card,dai-link@0 { 126 /* DAC */ 127 format = "i2s"; 128 dai-tdm-slot-width = <32>; 129 cpu { 130 sound-dai = <&sti_uni_player2>; 131 }; 132 133 codec { 134 sound-dai = <&sti_sasg_codec 1>; 135 }; 136 }; 137 simple-audio-card,dai-link@1 { 138 /* SPDIF */ 139 format = "left_j"; 140 cpu { 141 sound-dai = <&sti_uni_player3>; 142 }; 143 144 codec { 145 sound-dai = <&sti_sasg_codec 0>; 146 }; 147 }; 148 simple-audio-card,dai-link@2 { 149 /* TDM playback */ 150 format = "left_j"; 151 frame-inversion = <1>; 152 cpu { 153 sound-dai = <&sti_uni_player1>; 154 dai-tdm-slot-num = <16>; 155 dai-tdm-slot-width = <16>; 156 dai-tdm-slot-tx-mask = 157 <1 1 1 1 0 0 0 0 0 0 1 1 0 0 1 1>; 158 }; 159 160 codec { 161 sound-dai = <&sti_sasg_codec 3>; 162 }; 163 }; 164 };
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