projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| a605c668 KP |
1 | Netlogic XLP Family GPIO |
| 2 | ======================== | |
| 3 | ||
| 4 | This GPIO driver is used for following Netlogic XLP SoCs: | |
| 5 | XLP832, XLP316, XLP208, XLP980, XLP532 | |
| 6 | ||
| 7 | Required properties: | |
| 8 | ------------------- | |
| 9 | ||
| 10 | - compatible: Should be one of the following: | |
| 11 | - "netlogic,xlp832-gpio": For Netlogic XLP832 | |
| 12 | - "netlogic,xlp316-gpio": For Netlogic XLP316 | |
| 13 | - "netlogic,xlp208-gpio": For Netlogic XLP208 | |
| 14 | - "netlogic,xlp980-gpio": For Netlogic XLP980 | |
| 15 | - "netlogic,xlp532-gpio": For Netlogic XLP532 | |
| 16 | - reg: Physical base address and length of the controller's registers. | |
| 17 | - #gpio-cells: Should be two. The first cell is the pin number and the second | |
| 18 | cell is used to specify optional parameters (currently unused). | |
| 19 | - gpio-controller: Marks the device node as a GPIO controller. | |
| 20 | - nr-gpios: Number of GPIO pins supported by the controller. | |
| 21 | - interrupt-cells: Should be two. The first cell is the GPIO Number. The | |
| 22 | second cell is used to specify flags. The following subset of flags is | |
| 23 | supported: | |
| 24 | - trigger type: | |
| 25 | 1 = low to high edge triggered. | |
| 26 | 2 = high to low edge triggered. | |
| 27 | 4 = active high level-sensitive. | |
| 28 | 8 = active low level-sensitive. | |
| 29 | - interrupts: Interrupt number for this device. | |
| 30 | - interrupt-parent: phandle of the parent interrupt controller. | |
| 31 | - interrupt-controller: Identifies the node as an interrupt controller. | |
| 32 | ||
| 33 | Example: | |
| 34 | ||
| 35 | gpio: xlp_gpio@34000 { | |
| 36 | compatible = "netlogic,xlp316-gpio"; | |
| 37 | reg = <0 0x34100 0x1000 | |
| 38 | 0 0x35100 0x1000>; | |
| 39 | #gpio-cells = <2>; | |
| 40 | gpio-controller; | |
| 41 | nr-gpios = <57>; | |
| 42 | ||
| 43 | #interrupt-cells = <2>; | |
| 44 | interrupt-parent = <&pic>; | |
| 45 | interrupts = <39>; | |
| 46 | interrupt-controller; | |
| 47 | }; |