1*4882a593SmuzhiyunBinding for the LTC2952 PowerPath controller 2*4882a593Smuzhiyun 3*4882a593SmuzhiyunThis chip is used to externally trigger a system shut down. Once the trigger has 4*4882a593Smuzhiyunbeen sent, the chip's watchdog has to be reset to gracefully shut down. 5*4882a593SmuzhiyunA full powerdown can be triggered via the kill signal. 6*4882a593Smuzhiyun 7*4882a593SmuzhiyunRequired properties: 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun- compatible: Must contain: "lltc,ltc2952" 10*4882a593Smuzhiyun- watchdog-gpios: phandle + gpio-specifier for the GPIO connected to the 11*4882a593Smuzhiyun chip's watchdog line 12*4882a593Smuzhiyun- kill-gpios: phandle + gpio-specifier for the GPIO connected to the 13*4882a593Smuzhiyun chip's kill line 14*4882a593Smuzhiyun 15*4882a593SmuzhiyunOptional properties: 16*4882a593Smuzhiyun- trigger-gpios: phandle + gpio-specifier for the GPIO connected to the 17*4882a593Smuzhiyun chip's trigger line. If this property is not set, the 18*4882a593Smuzhiyun trigger function is ignored and the chip is kept alive 19*4882a593Smuzhiyun until an explicit kill signal is received 20*4882a593Smuzhiyun 21*4882a593SmuzhiyunExample: 22*4882a593Smuzhiyun 23*4882a593Smuzhiyunltc2952 { 24*4882a593Smuzhiyun compatible = "lltc,ltc2952"; 25*4882a593Smuzhiyun 26*4882a593Smuzhiyun trigger-gpios = <&gpio0 1 GPIO_ACTIVE_LOW>; 27*4882a593Smuzhiyun watchdog-gpios = <&gpio1 2 GPIO_ACTIVE_HIGH>; 28*4882a593Smuzhiyun kill-gpios = <&gpio0 2 GPIO_ACTIVE_LOW>; 29*4882a593Smuzhiyun}; 30