0545e9dc6d
commit d1edce71135cc6d98c0a4b5729774542b676e769 Author: sophgo-forum-service <forum_service@sophgo.com> Date: Fri Mar 15 16:07:33 2024 +0800 [fix] recommend using ssh method to clone repo. [fix] fix sensor driver repo branch name.
29 lines
728 B
Plaintext
29 lines
728 B
Plaintext
Altera GPIO controller bindings
|
|
|
|
Required properties:
|
|
- compatible:
|
|
- "altr,pio-1.0"
|
|
- reg: Physical base address and length of the controller's registers.
|
|
|
|
Optional properties:
|
|
- altr,gpio-bank-width: Width of the GPIO bank. This defines how many pins the
|
|
GPIO device has. Ranges between 1-32. Optional and defaults to 32 if not
|
|
specified.
|
|
- gpio-bank-name: bank name attached to this device.
|
|
|
|
Example:
|
|
|
|
user_led_pio_8out: gpio@0x4cc0 {
|
|
compatible = "altr,pio-1.0";
|
|
reg = <0x00004cc0 0x00000010>;
|
|
resetvalue = <255>;
|
|
altr,gpio-bank-width = <8>;
|
|
#gpio-cells = <2>;
|
|
gpio-controller;
|
|
gpio-bank-name = "led";
|
|
};
|
|
|
|
In this example, the gpio can be accessed as led[0..7] using gpio command of
|
|
u-boot.
|
|
==> gpio clear led0
|