1*4882a593Smuzhiyun* D-Link DIR-685 Touchkeys 2*4882a593Smuzhiyun 3*4882a593SmuzhiyunThis is a I2C one-off touchkey controller based on the Cypress Semiconductor 4*4882a593SmuzhiyunCY8C214 MCU with some firmware in its internal 8KB flash. The circuit 5*4882a593Smuzhiyunboard inside the router is named E119921. 6*4882a593Smuzhiyun 7*4882a593SmuzhiyunThe touchkey device node should be placed inside an I2C bus node. 8*4882a593Smuzhiyun 9*4882a593SmuzhiyunRequired properties: 10*4882a593Smuzhiyun- compatible: must be "dlink,dir685-touchkeys" 11*4882a593Smuzhiyun- reg: the I2C address of the touchkeys 12*4882a593Smuzhiyun- interrupts: reference to the interrupt number 13*4882a593Smuzhiyun 14*4882a593SmuzhiyunExample: 15*4882a593Smuzhiyun 16*4882a593Smuzhiyuntouchkeys@26 { 17*4882a593Smuzhiyun compatible = "dlink,dir685-touchkeys"; 18*4882a593Smuzhiyun reg = <0x26>; 19*4882a593Smuzhiyun interrupt-parent = <&gpio0>; 20*4882a593Smuzhiyun interrupts = <17 IRQ_TYPE_EDGE_FALLING>; 21*4882a593Smuzhiyun}; 22