GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

2026-09-06 03:52:57 +08:00
commit b1928b41c0
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+* Intel High-definition Audio
+
+Configuration is set using 'verbs' which are blocks of 16 bytes of data each
+with a different purpose, a little like a simple instruction set.
+
+Top-level node
+--------------
+
+Required properties:
+- compatible: "intel,hd-audio"
+- beep-verbs: list of verbs to send for a beep
+
+Optional properties
+- intel,beep-nid: Node ID to use for beep (will be detected if not provided)
+- codec-enable-gpio : The GPIO used to enable the audio codec
+
+Required subnodes:
+- codecs: Contains a list of codec nodes
+
+
+* Codec nodes
+
+Required properties:
+- vendor-id: 16-bit vendor ID for audio codec
+- device-id: 16-bit device ID for audio codec
+- verbs: List of verbs, each 4 cells in length
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+NVIDIA Tegra audio complex, with MAX98090 CODEC
+
+Required properties:
+- compatible : "nvidia,tegra-audio-max98090"
+- clocks : Must contain an entry for each entry in clock-names.
+  See ../clocks/clock-bindings.txt for details.
+- clock-names : Must include the following entries:
+  - pll_a
+  - pll_a_out0
+  - mclk (The Tegra cdev1/extern1 clock, which feeds the CODEC's mclk)
+- nvidia,model : The user-visible name of this sound complex.
+- nvidia,audio-routing : A list of the connections between audio components.
+  Each entry is a pair of strings, the first being the connection's sink,
+  the second being the connection's source. Valid names for sources and
+  sinks are the MAX98090's pins (as documented in its binding), and the jacks
+  on the board:
+
+  * Headphones
+  * Speakers
+  * Mic Jack
+  * Int Mic
+
+- nvidia,i2s-controller : The phandle of the Tegra I2S controller that's
+  connected to the CODEC.
+- nvidia,audio-codec : The phandle of the MAX98090 audio codec.
+
+Optional properties:
+- nvidia,hp-det-gpios : The GPIO that detect headphones are plugged in
+- nvidia,mic-det-gpios : The GPIO that detect microphones are plugged in
+- codec-enable-gpio : The GPIO used to enable the audio codec
+
+Example:
+
+sound {
+	compatible = "nvidia,tegra-audio-max98090-venice2",
+		     "nvidia,tegra-audio-max98090";
+	nvidia,model = "NVIDIA Tegra Venice2";
+
+	nvidia,audio-routing =
+		"Headphones", "HPR",
+		"Headphones", "HPL",
+		"Speakers", "SPKR",
+		"Speakers", "SPKL",
+		"Mic Jack", "MICBIAS",
+		"IN34", "Mic Jack";
+
+	nvidia,i2s-controller = <&tegra_i2s1>;
+	nvidia,audio-codec = <&acodec>;
+
+	clocks = <&tegra_car TEGRA124_CLK_PLL_A>,
+		 <&tegra_car TEGRA124_CLK_PLL_A_OUT0>,
+		 <&tegra_car TEGRA124_CLK_EXTERN1>;
+	clock-names = "pll_a", "pll_a_out0", "mclk";
+};
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+Audio Binding for Snow boards
+
+Required properties:
+- compatible : Can be one of the following,
+			"google,snow-audio-max98090" or
+			"google,snow-audio-max98091" or
+			"google,snow-audio-max98095"
+- samsung,i2s-controller (deprecated): The phandle of the Samsung I2S controller
+- samsung,audio-codec (deprecated): The phandle of the audio codec
+
+Required sub-nodes:
+
+ - 'cpu' subnode with a 'sound-dai' property containing the phandle of the I2S
+    controller
+ - 'codec' subnode with a 'sound-dai' property containing list of phandles
+    to the CODEC nodes, first entry must be the phandle of the MAX98090,
+    MAX98091 or MAX98095 CODEC (exact device type is indicated by the compatible
+    string) and the second entry must be the phandle of the HDMI IP block node
+
+Optional:
+- samsung,model: The name of the sound-card
+- codec-enable-gpio : The GPIO used to enable the audio codec
+
+Example:
+
+sound {
+		compatible = "google,snow-audio-max98095";
+
+		samsung,model = "Snow-I2S-MAX98095";
+		samsung,i2s-controller = <&i2s0>;
+		samsung,audio-codec = <&max98095>;
+};