1*c66ec88fSEmmanuel VadotBindings for the National Instruments 169445 GPIO NAND controller 2*c66ec88fSEmmanuel Vadot 3*c66ec88fSEmmanuel VadotThe 169445 GPIO NAND controller has two memory mapped GPIO registers, one 4*c66ec88fSEmmanuel Vadotfor input (the ready signal) and one for output (control signals). It is 5*c66ec88fSEmmanuel Vadotintended to be used with the GPIO NAND driver. 6*c66ec88fSEmmanuel Vadot 7*c66ec88fSEmmanuel VadotRequired properties: 8*c66ec88fSEmmanuel Vadot - compatible: should be "ni,169445-nand-gpio" 9*c66ec88fSEmmanuel Vadot - reg-names: must contain 10*c66ec88fSEmmanuel Vadot "dat" - data register 11*c66ec88fSEmmanuel Vadot - reg: address + size pairs describing the GPIO register sets; 12*c66ec88fSEmmanuel Vadot order must correspond with the order of entries in reg-names 13*c66ec88fSEmmanuel Vadot - #gpio-cells: must be set to 2. The first cell is the pin number and 14*c66ec88fSEmmanuel Vadot the second cell is used to specify the gpio polarity: 15*c66ec88fSEmmanuel Vadot 0 = active high 16*c66ec88fSEmmanuel Vadot 1 = active low 17*c66ec88fSEmmanuel Vadot - gpio-controller: Marks the device node as a gpio controller. 18*c66ec88fSEmmanuel Vadot 19*c66ec88fSEmmanuel VadotOptional properties: 20*c66ec88fSEmmanuel Vadot - no-output: disables driving output on the pins 21*c66ec88fSEmmanuel Vadot 22*c66ec88fSEmmanuel VadotExamples: 23*c66ec88fSEmmanuel Vadot gpio1: nand-gpio-out@1f300010 { 24*c66ec88fSEmmanuel Vadot compatible = "ni,169445-nand-gpio"; 25*c66ec88fSEmmanuel Vadot reg = <0x1f300010 0x4>; 26*c66ec88fSEmmanuel Vadot reg-names = "dat"; 27*c66ec88fSEmmanuel Vadot gpio-controller; 28*c66ec88fSEmmanuel Vadot #gpio-cells = <2>; 29*c66ec88fSEmmanuel Vadot }; 30*c66ec88fSEmmanuel Vadot 31*c66ec88fSEmmanuel Vadot gpio2: nand-gpio-in@1f300014 { 32*c66ec88fSEmmanuel Vadot compatible = "ni,169445-nand-gpio"; 33*c66ec88fSEmmanuel Vadot reg = <0x1f300014 0x4>; 34*c66ec88fSEmmanuel Vadot reg-names = "dat"; 35*c66ec88fSEmmanuel Vadot gpio-controller; 36*c66ec88fSEmmanuel Vadot #gpio-cells = <2>; 37*c66ec88fSEmmanuel Vadot no-output; 38*c66ec88fSEmmanuel Vadot }; 39