Commit | Line | Data |
---|---|---|
4515b76d AS |
1 | * 74XX MMIO GPIO driver |
2 | ||
3 | Required properties: | |
4 | - compatible: Should contain one of the following: | |
5 | "ti,741g125": for 741G125 (1-bit Input), | |
6 | "ti,741g174": for 741G74 (1-bit Output), | |
7 | "ti,742g125": for 742G125 (2-bit Input), | |
8 | "ti,7474" : for 7474 (2-bit Output), | |
9 | "ti,74125" : for 74125 (4-bit Input), | |
10 | "ti,74175" : for 74175 (4-bit Output), | |
11 | "ti,74365" : for 74365 (6-bit Input), | |
12 | "ti,74174" : for 74174 (6-bit Output), | |
13 | "ti,74244" : for 74244 (8-bit Input), | |
14 | "ti,74273" : for 74273 (8-bit Output), | |
15 | "ti,741624" : for 741624 (16-bit Input), | |
16 | "ti,7416374": for 7416374 (16-bit Output). | |
17 | - reg: Physical base address and length where IC resides. | |
18 | - gpio-controller: Marks the device node as a gpio controller. | |
19 | - #gpio-cells: Should be two. The first cell is the pin number and | |
20 | the second cell is used to specify the GPIO polarity: | |
21 | 0 = Active High, | |
22 | 1 = Active Low. | |
23 | ||
24 | Example: | |
25 | ctrl: gpio@30008004 { | |
26 | compatible = "ti,74174"; | |
27 | reg = <0x30008004 0x1>; | |
28 | gpio-controller; | |
29 | #gpio-cells = <2>; | |
30 | }; |