mirror of
https://github.com/torvalds/linux.git
synced 2024-12-23 03:11:46 +00:00
b56ece9a3a
The OLPC XO-1.75 and XO-4 laptops include a PS/2 touchpad and an AT keyboard, yet they do not have a hardware PS/2 controller. Instead, a firmware runs on a dedicated core ("Security Processor", part of the SoC) that acts as a PS/2 controller through bit-banging. Communication between the main cpu (Application Processor) and the Security Processor happens via a standard command mechanism implemented by the SoC. Add a driver for this interface to enable keyboard/mouse input on this platform. Original author: Saadia Baloch Signed-off-by: Daniel Drake <dsd@laptop.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
14 lines
273 B
Plaintext
14 lines
273 B
Plaintext
OLPC AP-SP serio interface
|
|
|
|
Required properties:
|
|
- compatible : "olpc,ap-sp"
|
|
- reg : base address and length of SoC's WTM registers
|
|
- interrupts : SP-AP interrupt
|
|
|
|
Example:
|
|
ap-sp@d4290000 {
|
|
compatible = "olpc,ap-sp";
|
|
reg = <0xd4290000 0x1000>;
|
|
interrupts = <40>;
|
|
}
|