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Diffstat (limited to 'Documentation/devicetree/bindings/sound/xlnx,v-uhdsdi-audio.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/sound/xlnx,v-uhdsdi-audio.txt | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/xlnx,v-uhdsdi-audio.txt b/Documentation/devicetree/bindings/sound/xlnx,v-uhdsdi-audio.txt new file mode 100644 index 000000000000..69134458b9d5 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/xlnx,v-uhdsdi-audio.txt @@ -0,0 +1,60 @@ +Device-Tree bindings for Xilinx SDI audio + +The IP core supports embed/extract of audio in SDI Tx and Rx +protocol respectively. Reference to PG: +https://www.xilinx.com/support/documentation/ip_documentation/v_uhdsdi_audio/v1_0/pg309-v-uhdsdi-audio.pdf + +Required properties: + - compatible: Should be one of: + "xlnx,v-uhdsdi-audio-2.0" + "xlnx,v-uhdsdi-audio-1.0" + Note: v1.0 (xlnx,v-uhdsdi-audio-1.0) is deprecated + and driver no longer supports it. Mandatory to upgrade to v2.0 + - interrupts: Interrupt number. + - interrupts-parent: phandle for interrupt controller. + - reg: Base address and size of the IP core instance. + - xlnx,snd-pcm: reference to audio formatter block + - clock-names: List of input clocks. + Required elements for SDI Embed: "s_axi_aclk", "s_axis_clk", "sdi_embed_clk". + Required elements for SDI Extract: "s_axi_aclk", "sdi_extract_clk", "m_axis_clk". + - clocks: Input clock specifier. Refer to common clock bindings. + +SDI embed contains a output port to remote endpoint of SDI video Tx node. +This pipeline should be described using the DT bindings defined in +Documentation/devicetree/bindings/graph.txt + +Example: + + audio_ss_0_v_uhdsdi_audio_extract_0: v_uhdsdi_audio@80080000 { + compatible = "xlnx,v-uhdsdi-audio-2.0"; + clock-names = "s_axi_aclk", "sdi_extract_clk", "m_axis_clk"; + clocks = <&misc_clk_0>, <&misc_clk_1>, <&misc_clk_0>; + interrupt-names = "interrupt"; + interrupt-parent = <&gic>; + interrupts = <0 106 4>; + reg = <0x0 0x80080000 0x0 0x10000>; + xlnx,snd-pcm = <&audio_ss_0_audio_formatter_0>; + }; + + audio_ss_0_v_uhdsdi_audio_embed_0: v_uhdsdi_audio@80090000 { + compatible = "xlnx,v-uhdsdi-audio-2.0"; + clock-names = "s_axi_aclk", "s_axis_clk", "sdi_embed_clk"; + clocks = <&misc_clk_0>, <&misc_clk_0>, <&misc_clk_1>; + interrupt-names = "interrupt"; + interrupt-parent = <&gic>; + interrupts = <0 107 4>; + reg = <0x0 0x80090000 0x0 0x10000>; + xlnx,snd-pcm = <&audio_ss_0_audio_formatter_0>; + sdi_av_port: port@0 { + reg = <0>; + sditx_audio_embed_src: endpoint { + remote-endpoint = <&sdi_audio_sink_port>; + }; + }; + }; + + Node 'v_smpte_uhdsdi_tx_ss' is documented in SDI Tx video bindings, + located at Documentation/devicetree/bindings/display/xlnx/xlnx,sdi-tx.txt. + + Node 'audio_ss_0_audio_formatter_0' node is documented + at Documentation/devicetree/bindings/sound/xlnx,audio-formatter.txt |