1*c66ec88fSEmmanuel VadotSTMicroelectronics Low Power Controller (LPC) - RTC 2*c66ec88fSEmmanuel Vadot=================================================== 3*c66ec88fSEmmanuel Vadot 4*c66ec88fSEmmanuel VadotLPC currently supports Watchdog OR Real Time Clock OR Clocksource 5*c66ec88fSEmmanuel Vadotfunctionality. 6*c66ec88fSEmmanuel Vadot 7*c66ec88fSEmmanuel Vadot[See: ../watchdog/st_lpc_wdt.txt for Watchdog options] 8*c66ec88fSEmmanuel Vadot[See: ../timer/st,stih407-lpc for Clocksource options] 9*c66ec88fSEmmanuel Vadot 10*c66ec88fSEmmanuel VadotRequired properties 11*c66ec88fSEmmanuel Vadot 12*c66ec88fSEmmanuel Vadot- compatible : Must be: "st,stih407-lpc" 13*c66ec88fSEmmanuel Vadot- reg : LPC registers base address + size 14*c66ec88fSEmmanuel Vadot- interrupts : LPC interrupt line number and associated flags 15*c66ec88fSEmmanuel Vadot- clocks : Clock used by LPC device (See: ../clock/clock-bindings.txt) 16*c66ec88fSEmmanuel Vadot- st,lpc-mode : The LPC can run either one of three modes: 17*c66ec88fSEmmanuel Vadot ST_LPC_MODE_RTC [0] 18*c66ec88fSEmmanuel Vadot ST_LPC_MODE_WDT [1] 19*c66ec88fSEmmanuel Vadot ST_LPC_MODE_CLKSRC [2] 20*c66ec88fSEmmanuel Vadot One (and only one) mode must be selected. 21*c66ec88fSEmmanuel Vadot 22*c66ec88fSEmmanuel VadotExample: 23*c66ec88fSEmmanuel Vadot lpc@fde05000 { 24*c66ec88fSEmmanuel Vadot compatible = "st,stih407-lpc"; 25*c66ec88fSEmmanuel Vadot reg = <0xfde05000 0x1000>; 26*c66ec88fSEmmanuel Vadot clocks = <&clk_s_d3_flexgen CLK_LPC_0>; 27*c66ec88fSEmmanuel Vadot st,lpc-mode = <ST_LPC_MODE_RTC>; 28*c66ec88fSEmmanuel Vadot }; 29