threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
44 lines
980 B
Plaintext
44 lines
980 B
Plaintext
NXP LPC32xx SoC GPIO controller
|
|
|
|
Required properties:
|
|
- compatible: must be "nxp,lpc3220-gpio"
|
|
- reg: Physical base address and length of the controller's registers.
|
|
- gpio-controller: Marks the device node as a GPIO controller.
|
|
- #gpio-cells: Should be 3:
|
|
1) bank:
|
|
0: GPIO P0
|
|
1: GPIO P1
|
|
2: GPIO P2
|
|
3: GPIO P3
|
|
4: GPI P3
|
|
5: GPO P3
|
|
2) pin number
|
|
3) optional parameters:
|
|
- bit 0 specifies polarity (0 for normal, 1 for inverted)
|
|
- reg: Index of the GPIO group
|
|
|
|
Example:
|
|
|
|
gpio: gpio@40028000 {
|
|
compatible = "nxp,lpc3220-gpio";
|
|
reg = <0x40028000 0x1000>;
|
|
gpio-controller;
|
|
#gpio-cells = <3>; /* bank, pin, flags */
|
|
};
|
|
|
|
leds {
|
|
compatible = "gpio-leds";
|
|
|
|
led0 {
|
|
gpios = <&gpio 5 1 1>; /* GPO_P3 1, active low */
|
|
linux,default-trigger = "heartbeat";
|
|
default-state = "off";
|
|
};
|
|
|
|
led1 {
|
|
gpios = <&gpio 5 14 1>; /* GPO_P3 14, active low */
|
|
linux,default-trigger = "timer";
|
|
default-state = "off";
|
|
};
|
|
};
|