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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
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Required properties:
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- compatible : "olpc,ap-sp"
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- reg : base address and length of SoC's WTM registers
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- interrupts : SP-AP interrupt
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Example:
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ap-sp@d4290000 {
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compatible = "olpc,ap-sp";
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reg = <0xd4290000 0x1000>;
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interrupts = <40>;
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}
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