powerpc: gamecube: device tree

Add a device tree source file for the Nintendo GameCube video game console.

Signed-off-by: Albert Herranz <albert_herranz@yahoo.es>
Acked-by: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

1 files changed, 109 insertions, 0 deletions

diff --git a/Documentation/powerpc/dts-bindings/nintendo/gamecube.txt b/Documentation/powerpc/dts-bindings/nintendo/gamecube.txt
new file mode 100644
index 000000000000..b558585b1aaf
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+++ b/Documentation/powerpc/dts-bindings/nintendo/gamecube.txt
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+
+Nintendo GameCube device tree
+=============================
+
+1) The "flipper" node
+
+  This node represents the multi-function "Flipper" chip, which packages
+  many of the devices found in the Nintendo GameCube.
+
+  Required properties:
+
+   - compatible : Should be "nintendo,flipper"
+
+1.a) The Video Interface (VI) node
+
+  Represents the interface between the graphics processor and a external
+  video encoder.
+
+  Required properties:
+
+   - compatible : should be "nintendo,flipper-vi"
+   - reg : should contain the VI registers location and length
+   - interrupts : should contain the VI interrupt
+
+1.b) The Processor Interface (PI) node
+
+  Represents the data and control interface between the main processor
+  and graphics and audio processor.
+
+  Required properties:
+
+  - compatible : should be "nintendo,flipper-pi"
+  - reg : should contain the PI registers location and length
+
+1.b.i) The "Flipper" interrupt controller node
+
+  Represents the interrupt controller within the "Flipper" chip.
+  The node for the "Flipper" interrupt controller must be placed under
+  the PI node.
+
+  Required properties:
+
+  - compatible : should be "nintendo,flipper-pic"
+
+1.c) The Digital Signal Procesor (DSP) node
+
+  Represents the digital signal processor interface, designed to offload
+  audio related tasks.
+
+  Required properties:
+
+   - compatible : should be "nintendo,flipper-dsp"
+   - reg : should contain the DSP registers location and length
+   - interrupts : should contain the DSP interrupt
+
+1.c.i) The Auxiliary RAM (ARAM) node
+
+  Represents the non cpu-addressable ram designed mainly to store audio
+  related information.
+  The ARAM node must be placed under the DSP node.
+
+  Required properties:
+
+   - compatible : should be "nintendo,flipper-aram"
+   - reg : should contain the ARAM start (zero-based) and length
+
+1.d) The Disk Interface (DI) node
+
+  Represents the interface used to communicate with mass storage devices.
+
+  Required properties:
+
+   - compatible : should be "nintendo,flipper-di"
+   - reg : should contain the DI registers location and length
+   - interrupts : should contain the DI interrupt
+
+1.e) The Audio Interface (AI) node
+
+  Represents the interface to the external 16-bit stereo digital-to-analog
+  converter.
+
+  Required properties:
+
+   - compatible : should be "nintendo,flipper-ai"
+   - reg : should contain the AI registers location and length
+   - interrupts : should contain the AI interrupt
+
+1.f) The Serial Interface (SI) node
+
+  Represents the interface to the four single bit serial interfaces.
+  The SI is a proprietary serial interface used normally to control gamepads.
+  It's NOT a RS232-type interface.
+
+  Required properties:
+
+   - compatible : should be "nintendo,flipper-si"
+   - reg : should contain the SI registers location and length
+   - interrupts : should contain the SI interrupt
+
+1.g) The External Interface (EXI) node
+
+  Represents the multi-channel SPI-like interface.
+
+  Required properties:
+
+   - compatible : should be "nintendo,flipper-exi"
+   - reg : should contain the EXI registers location and length
+   - interrupts : should contain the EXI interrupt
+