mirror of https://gitee.com/openkylin/linux.git
47 lines
1.5 KiB
Plaintext
47 lines
1.5 KiB
Plaintext
Bindings for the Broadcom's brcm,bcm6345-gpio memory-mapped GPIO controllers.
|
|
|
|
These bindings can be used on any BCM63xx SoC. However, BCM6338 and BCM6345
|
|
are the only ones which don't need a pinctrl driver.
|
|
BCM6338 have 8-bit data and dirout registers, where GPIO state can be read
|
|
and/or written, and the direction changed from input to output.
|
|
BCM6345 have 16-bit data and dirout registers, where GPIO state can be read
|
|
and/or written, and the direction changed from input to output.
|
|
|
|
Required properties:
|
|
- compatible: should be "brcm,bcm6345-gpio"
|
|
- reg-names: must contain
|
|
"dat" - data register
|
|
"dirout" - direction (output) register
|
|
- reg: address + size pairs describing the GPIO register sets;
|
|
order must correspond with the order of entries in reg-names
|
|
- #gpio-cells: must be set to 2. The first cell is the pin number and
|
|
the second cell is used to specify the gpio polarity:
|
|
0 = active high
|
|
1 = active low
|
|
- gpio-controller: Marks the device node as a gpio controller.
|
|
|
|
Optional properties:
|
|
- native-endian: use native endian memory.
|
|
|
|
Examples:
|
|
- BCM6338:
|
|
gpio: gpio-controller@fffe0407 {
|
|
compatible = "brcm,bcm6345-gpio";
|
|
reg-names = "dirout", "dat";
|
|
reg = <0xfffe0407 1>, <0xfffe040f 1>;
|
|
|
|
#gpio-cells = <2>;
|
|
gpio-controller;
|
|
};
|
|
|
|
- BCM6345:
|
|
gpio: gpio-controller@fffe0406 {
|
|
compatible = "brcm,bcm6345-gpio";
|
|
reg-names = "dirout", "dat";
|
|
reg = <0xfffe0406 2>, <0xfffe040a 2>;
|
|
native-endian;
|
|
|
|
#gpio-cells = <2>;
|
|
gpio-controller;
|
|
};
|