powerpc: gamecube: device tree
Albert Herranz [Sat, 12 Dec 2009 06:31:35 +0000 (06:31 +0000)]
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>

Documentation/powerpc/dts-bindings/nintendo/gamecube.txt [new file with mode: 0644]
arch/powerpc/boot/dts/gamecube.dts [new file with mode: 0644]

diff --git a/Documentation/powerpc/dts-bindings/nintendo/gamecube.txt b/Documentation/powerpc/dts-bindings/nintendo/gamecube.txt
new file mode 100644 (file)
index 0000000..b558585
--- /dev/null
@@ -0,0 +1,109 @@
+
+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
+
diff --git a/arch/powerpc/boot/dts/gamecube.dts b/arch/powerpc/boot/dts/gamecube.dts
new file mode 100644 (file)
index 0000000..ef3be0e
--- /dev/null
@@ -0,0 +1,114 @@
+/*
+ * arch/powerpc/boot/dts/gamecube.dts
+ *
+ * Nintendo GameCube platform device tree source
+ * Copyright (C) 2007-2009 The GameCube Linux Team
+ * Copyright (C) 2007,2008,2009 Albert Herranz
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ */
+
+/dts-v1/;
+
+/ {
+       model = "nintendo,gamecube";
+       compatible = "nintendo,gamecube";
+       #address-cells = <1>;
+       #size-cells = <1>;
+
+       chosen {
+               bootargs = "root=/dev/gcnsda2 rootwait udbg-immortal";
+       };
+
+       memory {
+               device_type = "memory";
+               reg = <0x00000000 0x01800000>;
+       };
+
+       cpus {
+               #address-cells = <1>;
+               #size-cells = <0>;
+
+               PowerPC,gekko@0 {
+                       device_type = "cpu";
+                       reg = <0>;
+                       clock-frequency = <486000000>; /* 486MHz */
+                       bus-frequency = <162000000>; /* 162MHz core-to-bus 3x */
+                       timebase-frequency = <40500000>; /* 162MHz / 4 */
+                       i-cache-line-size = <32>;
+                       d-cache-line-size = <32>;
+                       i-cache-size = <32768>;
+                       d-cache-size = <32768>;
+               };
+       };
+
+       /* devices contained int the flipper chipset */
+       flipper {
+               #address-cells = <1>;
+               #size-cells = <1>;
+               compatible = "nintendo,flipper";
+               ranges = <0x0c000000 0x0c000000 0x00010000>;
+               interrupt-parent = <&PIC>;
+
+               video@0c002000 {
+                       compatible = "nintendo,flipper-vi";
+                       reg = <0x0c002000 0x100>;
+                       interrupts = <8>;
+               };
+
+               processor-interface@0c003000 {
+                       compatible = "nintendo,flipper-pi";
+                       reg = <0x0c003000 0x100>;
+
+                       PIC: pic {
+                               #interrupt-cells = <1>;
+                               compatible = "nintendo,flipper-pic";
+                               interrupt-controller;
+                       };
+               };
+
+               dsp@0c005000 {
+                       #address-cells = <1>;
+                       #size-cells = <1>;
+                       compatible = "nintendo,flipper-dsp";
+                       reg = <0x0c005000 0x200>;
+                       interrupts = <6>;
+
+                       memory@0 {
+                               compatible = "nintendo,flipper-aram";
+                               reg = <0 0x1000000>;    /* 16MB */
+                       };
+               };
+
+               disk@0c006000 {
+                       compatible = "nintendo,flipper-di";
+                       reg = <0x0c006000 0x40>;
+                       interrupts = <2>;
+               };
+
+               audio@0c006c00 {
+                       compatible = "nintendo,flipper-ai";
+                       reg = <0x0c006c00 0x20>;
+                       interrupts = <6>;
+               };
+
+               gamepad-controller@0c006400 {
+                       compatible = "nintendo,flipper-si";
+                       reg = <0x0c006400 0x100>;
+                       interrupts = <3>;
+               };
+
+               /* External Interface bus */
+               exi@0c006800 {
+                       compatible = "nintendo,flipper-exi";
+                       reg = <0x0c006800 0x40>;
+                       virtual-reg = <0x0c006800>;
+                       interrupts = <4>;
+               };
+        };
+};
+