0001 * 74XX MMIO GPIO driver
0002
0003 Required properties:
0004 - compatible: Should contain one of the following:
0005 "ti,741g125": for 741G125 (1-bit Input),
0006 "ti,741g174": for 741G74 (1-bit Output),
0007 "ti,742g125": for 742G125 (2-bit Input),
0008 "ti,7474" : for 7474 (2-bit Output),
0009 "ti,74125" : for 74125 (4-bit Input),
0010 "ti,74175" : for 74175 (4-bit Output),
0011 "ti,74365" : for 74365 (6-bit Input),
0012 "ti,74174" : for 74174 (6-bit Output),
0013 "ti,74244" : for 74244 (8-bit Input),
0014 "ti,74273" : for 74273 (8-bit Output),
0015 "ti,741624" : for 741624 (16-bit Input),
0016 "ti,7416374": for 7416374 (16-bit Output).
0017 - reg: Physical base address and length where IC resides.
0018 - gpio-controller: Marks the device node as a gpio controller.
0019 - #gpio-cells: Should be two. The first cell is the pin number and
0020 the second cell is used to specify the GPIO polarity:
0021 0 = Active High,
0022 1 = Active Low.
0023
0024 Example:
0025 ctrl: gpio@30008004 {
0026 compatible = "ti,74174";
0027 reg = <0x30008004 0x1>;
0028 gpio-controller;
0029 #gpio-cells = <2>;
0030 };
