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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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0a590ecc67
Some Samsung devices that share the midas-audio driver use a GPIO-based approach to headset jack detection, as opposed to using the built-in jack detection provided by the wm8994 driver. This setup uses two GPIOs (one for jack detection and another for key detection) and an ADC channel for determining the jack type or button pressed. Add DT configuration values that allow for describing these setups. Signed-off-by: Artur Weber <aweber.kernel@gmail.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Link: https://msgid.link/r/20240525-midas-wm1811-gpio-jack-v4-2-f488e03bd8c7@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
146 lines
3.5 KiB
YAML
146 lines
3.5 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/sound/samsung,midas-audio.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Samsung Midas audio complex with WM1811 codec
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maintainers:
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- Sylwester Nawrocki <s.nawrocki@samsung.com>
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allOf:
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- $ref: sound-card-common.yaml#
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properties:
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compatible:
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const: samsung,midas-audio
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cpu:
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type: object
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additionalProperties: false
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properties:
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sound-dai:
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maxItems: 1
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description: phandle to the I2S controller
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required:
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- sound-dai
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codec:
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type: object
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additionalProperties: false
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properties:
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sound-dai:
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maxItems: 1
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description: phandle to the WM1811 CODEC
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required:
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- sound-dai
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samsung,audio-routing:
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deprecated: true
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$ref: /schemas/types.yaml#/definitions/non-unique-string-array
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description: |
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List of the connections between audio components; each entry is
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a pair of strings, the first being the connection's sink, the second
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being the connection's source; valid names for sources and sinks are
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the WM1811's pins (as documented in its binding), and the jacks
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on the board: HP, SPK, Main Mic, Sub Mic, Headset Mic.
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Deprecated, use audio-routing.
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mic-bias-supply:
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description: Supply for the micbias on the Main microphone
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submic-bias-supply:
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description: Supply for the micbias on the Sub microphone
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headset-mic-bias-supply:
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description: Supply for the micbias on the Headset microphone
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fm-sel-gpios:
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maxItems: 1
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description: GPIO pin for FM selection
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lineout-sel-gpios:
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maxItems: 1
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description: GPIO pin for line out selection
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headset-detect-gpios:
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maxItems: 1
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description: GPIO for detection of headset insertion
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headset-key-gpios:
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maxItems: 1
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description: GPIO for detection of headset key press
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io-channels:
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maxItems: 1
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description: IO channel to read micbias voltage for headset detection
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io-channel-names:
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const: headset-detect
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samsung,headset-4pole-threshold-microvolt:
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minItems: 2
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maxItems: 2
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description:
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Array containing minimum and maximum IO channel value for 4-pole
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(with microphone/button) headsets. If the IO channel value is
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outside of this range, a 3-pole headset is assumed.
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samsung,headset-button-threshold-microvolt:
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minItems: 3
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maxItems: 3
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description: |
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Array of minimum (inclusive) IO channel values for headset button
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detection, in order: "Media", "Volume Up" and "Volume Down".
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required:
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- compatible
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- cpu
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- codec
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- audio-routing
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- mic-bias-supply
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- submic-bias-supply
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unevaluatedProperties: false
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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sound {
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compatible = "samsung,midas-audio";
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model = "Midas";
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fm-sel-gpios = <&gpaa0 3 GPIO_ACTIVE_HIGH>;
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mic-bias-supply = <&mic_bias_reg>;
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submic-bias-supply = <&submic_bias_reg>;
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audio-routing =
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"HP", "HPOUT1L",
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"HP", "HPOUT1R",
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"SPK", "SPKOUTLN",
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"SPK", "SPKOUTLP",
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"SPK", "SPKOUTRN",
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"SPK", "SPKOUTRP",
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"RCV", "HPOUT2N",
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"RCV", "HPOUT2P",
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"IN1LP", "Main Mic",
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"IN1LN", "Main Mic",
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"IN1RP", "Sub Mic",
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"IN1LP", "Sub Mic";
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cpu {
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sound-dai = <&i2s0>;
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};
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codec {
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sound-dai = <&wm1811>;
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};
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};
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