pca9557: pca9557@0x1f {
		compatible = "amlogic,pca9557_keypad";
		reg = <0x1f>;
		key_num = <4>;
		key_name = "fdr", "hotword", "pause", "mute";
		key_value = <106 105 139 116>;
		key_index_mask = <0x4 0x8 0x10 0x20>;
		key_input_mask = <0x3C>;
		status = "okay";
	};
