18c2ecf20Sopenharmony_ciAnalog Devices AD7303 DAC device driver 28c2ecf20Sopenharmony_ci 38c2ecf20Sopenharmony_ciRequired properties: 48c2ecf20Sopenharmony_ci - compatible: Must be "adi,ad7303" 58c2ecf20Sopenharmony_ci - reg: SPI chip select number for the device 68c2ecf20Sopenharmony_ci - spi-max-frequency: Max SPI frequency to use (< 30000000) 78c2ecf20Sopenharmony_ci - Vdd-supply: Phandle to the Vdd power supply 88c2ecf20Sopenharmony_ci 98c2ecf20Sopenharmony_ciOptional properties: 108c2ecf20Sopenharmony_ci - REF-supply: Phandle to the external reference voltage supply. This should 118c2ecf20Sopenharmony_ci only be set if there is an external reference voltage connected to the REF 128c2ecf20Sopenharmony_ci pin. If the property is not set Vdd/2 is used as the reference voltage. 138c2ecf20Sopenharmony_ci 148c2ecf20Sopenharmony_ciExample: 158c2ecf20Sopenharmony_ci 168c2ecf20Sopenharmony_ci ad7303@4 { 178c2ecf20Sopenharmony_ci compatible = "adi,ad7303"; 188c2ecf20Sopenharmony_ci reg = <4>; 198c2ecf20Sopenharmony_ci spi-max-frequency = <10000000>; 208c2ecf20Sopenharmony_ci Vdd-supply = <&vdd_supply>; 218c2ecf20Sopenharmony_ci adi,use-external-reference; 228c2ecf20Sopenharmony_ci REF-supply = <&vref_supply>; 238c2ecf20Sopenharmony_ci }; 24