1*4882a593Smuzhiyun* GPIO Decoder DT bindings 2*4882a593Smuzhiyun 3*4882a593SmuzhiyunRequired Properties: 4*4882a593Smuzhiyun- compatible: should be "gpio-decoder" 5*4882a593Smuzhiyun- gpios: a spec of gpios (at least two) to be decoded to a number with 6*4882a593Smuzhiyun first entry representing the MSB. 7*4882a593Smuzhiyun 8*4882a593SmuzhiyunOptional Properties: 9*4882a593Smuzhiyun- decoder-max-value: Maximum possible value that can be reported by 10*4882a593Smuzhiyun the gpios. 11*4882a593Smuzhiyun- linux,axis: the input subsystem axis to map to (ABS_X/ABS_Y). 12*4882a593Smuzhiyun Defaults to 0 (ABS_X). 13*4882a593Smuzhiyun 14*4882a593SmuzhiyunExample: 15*4882a593Smuzhiyun gpio-decoder0 { 16*4882a593Smuzhiyun compatible = "gpio-decoder"; 17*4882a593Smuzhiyun gpios = <&pca9536 3 GPIO_ACTIVE_HIGH>, 18*4882a593Smuzhiyun <&pca9536 2 GPIO_ACTIVE_HIGH>, 19*4882a593Smuzhiyun <&pca9536 1 GPIO_ACTIVE_HIGH>, 20*4882a593Smuzhiyun <&pca9536 0 GPIO_ACTIVE_HIGH>; 21*4882a593Smuzhiyun linux,axis = <0>; /* ABS_X */ 22*4882a593Smuzhiyun decoder-max-value = <9>; 23*4882a593Smuzhiyun }; 24