Based on kernel version 6.11
. Page generated on 2024-09-24 08:21 EST
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 | CS43130 DAC Required properties: - compatible : "cirrus,cs43130", "cirrus,cs4399", "cirrus,cs43131", "cirrus,cs43198" - reg : the I2C address of the device for I2C - VA-supply, VP-supply, VL-supply, VCP-supply, VD-supply: power supplies for the device, as covered in Documentation/devicetree/bindings/regulator/regulator.txt. Optional properties: - reset-gpios : Active low GPIO used to reset the device - cirrus,xtal-ibias: When external MCLK is generated by external crystal oscillator, CS43130 can be used to provide bias current for external crystal. Amount of bias current sent is set as: 1 = 7.5uA 2 = 12.5uA 3 = 15uA - cirrus,dc-measure: Boolean, define to enable headphone DC impedance measurement. - cirrus,ac-measure: Boolean, define to enable headphone AC impedance measurement. DC impedance must also be enabled for AC impedance measurement. - cirrus,dc-threshold: Define 2 DC impedance thresholds in ohms for HP output control. Default values are 50 and 120 Ohms. - cirrus,ac-freq: Define the frequencies at which to measure HP AC impedance. Only used if "cirrus,dc-measure" is defined. Exactly 10 frequencies must be defined. If this properties is undefined, by default, following frequencies are used: <24 43 93 200 431 928 2000 4309 9283 20000> The above frequencies are logarithmically equally spaced. Log base is 10. Example: cs43130: audio-codec@30 { compatible = "cirrus,cs43130"; reg = <0x30>; reset-gpios = <&axi_gpio 54 0>; VA-supply = <&dummy_vreg>; VP-supply = <&dummy_vreg>; VL-supply = <&dummy_vreg>; VCP-supply = <&dummy_vreg>; VD-supply = <&dummy_vreg>; cirrus,xtal-ibias = <2>; interrupt-parent = <&gpio0>; interrupts = <55 8>; cirrus,dc-measure; cirrus,ac-measure; cirrus,dc-threshold = /bits/ 16 <20 100>; cirrus,ac-freq = /bits/ 16 <24 43 93 200 431 928 2000 4309 9283 20000>; }; |