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d8f64797c5
Many of the Tegra DT binding documents say nothing about the clocks or clock-names properties, yet those are present and required in DT files. This patch simply updates the documentation file to match the implicit definition of the binding, based on real-world DT content. All Tegra bindings that mention clocks are updated to have consistent wording and formatting of the clock-related properties. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-By: Terje Bergstrom <tbergstrom@nvidia.com>
61 lines
2.0 KiB
Plaintext
61 lines
2.0 KiB
Plaintext
NVIDIA Tegra audio complex
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Required properties:
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- compatible : "nvidia,tegra-audio-wm8903"
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- clocks : Must contain an entry for each entry in clock-names.
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See ../clocks/clock-bindings.txt for details.
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- clock-names : Must include the following entries:
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- pll_a
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- pll_a_out0
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- mclk (The Tegra cdev1/extern1 clock, which feeds the CODEC's mclk)
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- nvidia,model : The user-visible name of this sound complex.
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- nvidia,audio-routing : A list of the connections between audio components.
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Each entry is a pair of strings, the first being the connection's sink,
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the second being the connection's source. Valid names for sources and
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sinks are the WM8903's pins (documented in the WM8903 binding document),
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and the jacks on the board:
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* Headphone Jack
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* Int Spk
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* Mic Jack
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- nvidia,i2s-controller : The phandle of the Tegra I2S1 controller
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- nvidia,audio-codec : The phandle of the WM8903 audio codec
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Optional properties:
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- nvidia,spkr-en-gpios : The GPIO that enables the speakers
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- nvidia,hp-mute-gpios : The GPIO that mutes the headphones
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- nvidia,hp-det-gpios : The GPIO that detect headphones are plugged in
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- nvidia,int-mic-en-gpios : The GPIO that enables the internal microphone
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- nvidia,ext-mic-en-gpios : The GPIO that enables the external microphone
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Example:
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sound {
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compatible = "nvidia,tegra-audio-wm8903-harmony",
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"nvidia,tegra-audio-wm8903"
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nvidia,model = "tegra-wm8903-harmony";
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nvidia,audio-routing =
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"Headphone Jack", "HPOUTR",
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"Headphone Jack", "HPOUTL",
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"Int Spk", "ROP",
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"Int Spk", "RON",
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"Int Spk", "LOP",
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"Int Spk", "LON",
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"Mic Jack", "MICBIAS",
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"IN1L", "Mic Jack";
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nvidia,i2s-controller = <&i2s1>;
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nvidia,audio-codec = <&wm8903>;
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nvidia,spkr-en-gpios = <&codec 2 0>;
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nvidia,hp-det-gpios = <&gpio 178 0>; /* gpio PW2 */
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nvidia,int-mic-en-gpios = <&gpio 184 0>; /*gpio PX0 */
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nvidia,ext-mic-en-gpios = <&gpio 185 0>; /* gpio PX1 */
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clocks = <&tegra_car 112>, <&tegra_car 113>, <&tegra_car 93>;
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clock-names = "pll_a", "pll_a_out0", "mclk";
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};
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