mirror of
https://github.com/torvalds/linux.git
synced 2024-12-18 17:12:55 +00:00
a605c668cc
Provide documentation for Netlogic XLP SoCs GPIO controller DTS bindings. Signed-off-by: Kamlakant Patel <kamlakant.patel@broadcom.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
48 lines
1.6 KiB
Plaintext
48 lines
1.6 KiB
Plaintext
Netlogic XLP Family GPIO
|
|
========================
|
|
|
|
This GPIO driver is used for following Netlogic XLP SoCs:
|
|
XLP832, XLP316, XLP208, XLP980, XLP532
|
|
|
|
Required properties:
|
|
-------------------
|
|
|
|
- compatible: Should be one of the following:
|
|
- "netlogic,xlp832-gpio": For Netlogic XLP832
|
|
- "netlogic,xlp316-gpio": For Netlogic XLP316
|
|
- "netlogic,xlp208-gpio": For Netlogic XLP208
|
|
- "netlogic,xlp980-gpio": For Netlogic XLP980
|
|
- "netlogic,xlp532-gpio": For Netlogic XLP532
|
|
- reg: Physical base address and length of the controller's registers.
|
|
- #gpio-cells: Should be two. The first cell is the pin number and the second
|
|
cell is used to specify optional parameters (currently unused).
|
|
- gpio-controller: Marks the device node as a GPIO controller.
|
|
- nr-gpios: Number of GPIO pins supported by the controller.
|
|
- interrupt-cells: Should be two. The first cell is the GPIO Number. The
|
|
second cell is used to specify flags. The following subset of flags is
|
|
supported:
|
|
- trigger type:
|
|
1 = low to high edge triggered.
|
|
2 = high to low edge triggered.
|
|
4 = active high level-sensitive.
|
|
8 = active low level-sensitive.
|
|
- interrupts: Interrupt number for this device.
|
|
- interrupt-parent: phandle of the parent interrupt controller.
|
|
- interrupt-controller: Identifies the node as an interrupt controller.
|
|
|
|
Example:
|
|
|
|
gpio: xlp_gpio@34000 {
|
|
compatible = "netlogic,xlp316-gpio";
|
|
reg = <0 0x34100 0x1000
|
|
0 0x35100 0x1000>;
|
|
#gpio-cells = <2>;
|
|
gpio-controller;
|
|
nr-gpios = <57>;
|
|
|
|
#interrupt-cells = <2>;
|
|
interrupt-parent = <&pic>;
|
|
interrupts = <39>;
|
|
interrupt-controller;
|
|
};
|