18c2ecf20Sopenharmony_ciCS43130 DAC 28c2ecf20Sopenharmony_ci 38c2ecf20Sopenharmony_ciRequired properties: 48c2ecf20Sopenharmony_ci 58c2ecf20Sopenharmony_ci - compatible : "cirrus,cs43130", "cirrus,cs4399", "cirrus,cs43131", 68c2ecf20Sopenharmony_ci "cirrus,cs43198" 78c2ecf20Sopenharmony_ci 88c2ecf20Sopenharmony_ci - reg : the I2C address of the device for I2C 98c2ecf20Sopenharmony_ci 108c2ecf20Sopenharmony_ci - VA-supply, VP-supply, VL-supply, VCP-supply, VD-supply: 118c2ecf20Sopenharmony_ci power supplies for the device, as covered in 128c2ecf20Sopenharmony_ci Documentation/devicetree/bindings/regulator/regulator.txt. 138c2ecf20Sopenharmony_ci 148c2ecf20Sopenharmony_ci 158c2ecf20Sopenharmony_ciOptional properties: 168c2ecf20Sopenharmony_ci 178c2ecf20Sopenharmony_ci - reset-gpios : Active low GPIO used to reset the device 188c2ecf20Sopenharmony_ci 198c2ecf20Sopenharmony_ci - cirrus,xtal-ibias: 208c2ecf20Sopenharmony_ci When external MCLK is generated by external crystal 218c2ecf20Sopenharmony_ci oscillator, CS43130 can be used to provide bias current 228c2ecf20Sopenharmony_ci for external crystal. Amount of bias current sent is 238c2ecf20Sopenharmony_ci set as: 248c2ecf20Sopenharmony_ci 1 = 7.5uA 258c2ecf20Sopenharmony_ci 2 = 12.5uA 268c2ecf20Sopenharmony_ci 3 = 15uA 278c2ecf20Sopenharmony_ci 288c2ecf20Sopenharmony_ci - cirrus,dc-measure: 298c2ecf20Sopenharmony_ci Boolean, define to enable headphone DC impedance measurement. 308c2ecf20Sopenharmony_ci 318c2ecf20Sopenharmony_ci - cirrus,ac-measure: 328c2ecf20Sopenharmony_ci Boolean, define to enable headphone AC impedance measurement. 338c2ecf20Sopenharmony_ci DC impedance must also be enabled for AC impedance measurement. 348c2ecf20Sopenharmony_ci 358c2ecf20Sopenharmony_ci - cirrus,dc-threshold: 368c2ecf20Sopenharmony_ci Define 2 DC impedance thresholds in ohms for HP output control. 378c2ecf20Sopenharmony_ci Default values are 50 and 120 Ohms. 388c2ecf20Sopenharmony_ci 398c2ecf20Sopenharmony_ci - cirrus,ac-freq: 408c2ecf20Sopenharmony_ci Define the frequencies at which to measure HP AC impedance. 418c2ecf20Sopenharmony_ci Only used if "cirrus,dc-measure" is defined. 428c2ecf20Sopenharmony_ci Exactly 10 frequencies must be defined. 438c2ecf20Sopenharmony_ci If this properties is undefined, by default, 448c2ecf20Sopenharmony_ci following frequencies are used: 458c2ecf20Sopenharmony_ci <24 43 93 200 431 928 2000 4309 9283 20000> 468c2ecf20Sopenharmony_ci The above frequencies are logarithmically equally spaced. 478c2ecf20Sopenharmony_ci Log base is 10. 488c2ecf20Sopenharmony_ci 498c2ecf20Sopenharmony_ciExample: 508c2ecf20Sopenharmony_ci 518c2ecf20Sopenharmony_cics43130: audio-codec@30 { 528c2ecf20Sopenharmony_ci compatible = "cirrus,cs43130"; 538c2ecf20Sopenharmony_ci reg = <0x30>; 548c2ecf20Sopenharmony_ci reset-gpios = <&axi_gpio 54 0>; 558c2ecf20Sopenharmony_ci VA-supply = <&dummy_vreg>; 568c2ecf20Sopenharmony_ci VP-supply = <&dummy_vreg>; 578c2ecf20Sopenharmony_ci VL-supply = <&dummy_vreg>; 588c2ecf20Sopenharmony_ci VCP-supply = <&dummy_vreg>; 598c2ecf20Sopenharmony_ci VD-supply = <&dummy_vreg>; 608c2ecf20Sopenharmony_ci cirrus,xtal-ibias = <2>; 618c2ecf20Sopenharmony_ci interrupt-parent = <&gpio0>; 628c2ecf20Sopenharmony_ci interrupts = <55 8>; 638c2ecf20Sopenharmony_ci cirrus,dc-measure; 648c2ecf20Sopenharmony_ci cirrus,ac-measure; 658c2ecf20Sopenharmony_ci cirrus,dc-threshold = /bits/ 16 <20 100>; 668c2ecf20Sopenharmony_ci cirrus,ac-freq = /bits/ 16 <24 43 93 200 431 928 2000 4309 9283 20000>; 678c2ecf20Sopenharmony_ci}; 68