tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1Netlogic XLP Family GPIO
2========================
3
4This GPIO driver is used for following Netlogic XLP SoCs:
5 XLP832, XLP316, XLP208, XLP980, XLP532
6This GPIO driver is also compatible with GPIO controller found on
7Broadcom Vulcan ARM64.
8
9Required properties:
10-------------------
11
12- compatible: Should be one of the following:
13 - "netlogic,xlp832-gpio": For Netlogic XLP832
14 - "netlogic,xlp316-gpio": For Netlogic XLP316
15 - "netlogic,xlp208-gpio": For Netlogic XLP208
16 - "netlogic,xlp980-gpio": For Netlogic XLP980
17 - "netlogic,xlp532-gpio": For Netlogic XLP532
18 - "brcm,vulcan-gpio": For Broadcom Vulcan ARM64
19- reg: Physical base address and length of the controller's registers.
20- #gpio-cells: Should be two. The first cell is the pin number and the second
21 cell is used to specify optional parameters (currently unused).
22- gpio-controller: Marks the device node as a GPIO controller.
23- nr-gpios: Number of GPIO pins supported by the controller.
24- interrupt-cells: Should be two. The first cell is the GPIO Number. The
25 second cell is used to specify flags. The following subset of flags is
26 supported:
27 - trigger type:
28 1 = low to high edge triggered.
29 2 = high to low edge triggered.
30 4 = active high level-sensitive.
31 8 = active low level-sensitive.
32- interrupts: Interrupt number for this device.
33- interrupt-parent: phandle of the parent interrupt controller.
34- interrupt-controller: Identifies the node as an interrupt controller.
35
36Example:
37
38 gpio: xlp_gpio@34000 {
39 compatible = "netlogic,xlp316-gpio";
40 reg = <0 0x34100 0x1000
41 0 0x35100 0x1000>;
42 #gpio-cells = <2>;
43 gpio-controller;
44 nr-gpios = <57>;
45
46 #interrupt-cells = <2>;
47 interrupt-parent = <&pic>;
48 interrupts = <39>;
49 interrupt-controller;
50 };