forked from Minki/linux
cdab0d4ecc
According to the datasheet RESET is active low pin, i.e. system goes to reset state when pin signal is low. The previous implementeation was assuming the pin is configured as 'active high' in DTS. Changle the gpio handling code and DTS configuration to 'active low'. Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
79 lines
1.9 KiB
Plaintext
79 lines
1.9 KiB
Plaintext
RT5677 audio CODEC
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This device supports I2C only.
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Required properties:
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- compatible : "realtek,rt5677".
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- reg : The I2C address of the device.
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- interrupts : The CODEC's interrupt output.
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- gpio-controller : Indicates this device is a GPIO controller.
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- #gpio-cells : Should be two. The first cell is the pin number and the
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second cell is used to specify optional parameters (currently unused).
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Optional properties:
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- realtek,pow-ldo2-gpio : The GPIO that controls the CODEC's POW_LDO2 pin.
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- realtek,reset-gpio : The GPIO that controls the CODEC's RESET pin. Active low.
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- realtek,in1-differential
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- realtek,in2-differential
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- realtek,lout1-differential
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- realtek,lout2-differential
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- realtek,lout3-differential
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Boolean. Indicate MIC1/2 input and LOUT1/2/3 outputs are differential,
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rather than single-ended.
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- realtek,gpio-config
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Array of six 8bit elements that configures GPIO.
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0 - floating (reset value)
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1 - pull down
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2 - pull up
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- realtek,jd1-gpio
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Configures GPIO Mic Jack detection 1.
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Select 0 ~ 3 as OFF, GPIO1, GPIO2 and GPIO3 respectively.
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- realtek,jd2-gpio
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- realtek,jd3-gpio
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Configures GPIO Mic Jack detection 2 and 3.
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Select 0 ~ 3 as OFF, GPIO4, GPIO5 and GPIO6 respectively.
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Pins on the device (for linking into audio routes):
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* IN1P
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* IN1N
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* IN2P
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* IN2N
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* MICBIAS1
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* DMIC1
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* DMIC2
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* DMIC3
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* DMIC4
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* LOUT1
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* LOUT2
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* LOUT3
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Example:
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rt5677 {
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compatible = "realtek,rt5677";
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reg = <0x2c>;
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interrupt-parent = <&gpio>;
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interrupts = <TEGRA_GPIO(W, 3) GPIO_ACTIVE_HIGH>;
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gpio-controller;
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#gpio-cells = <2>;
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realtek,pow-ldo2-gpio =
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<&gpio TEGRA_GPIO(V, 3) GPIO_ACTIVE_HIGH>;
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realtek,reset-gpio = <&gpio TEGRA_GPIO(BB, 3) GPIO_ACTIVE_LOW>;
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realtek,in1-differential = "true";
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realtek,gpio-config = /bits/ 8 <0 0 0 0 0 2>; /* pull up GPIO6 */
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realtek,jd2-gpio = <3>; /* Enables Jack detection for GPIO6 */
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};
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