Add devicetree source files as of Linux-3.15-rc2

This adds the Linux dts files to barebox. The dts files are
generated from Ian Campbells device-tree-rebasing.git:

git://xenbits.xen.org/people/ianc/device-tree-rebasing.git

The dts are found in dts/ in the barebox repository and
will be updated from upstream regularly, probably for each upstream
-rc.

To keep the synchronization with upstream easy no changes to
the original files are allowed under dts/. Instead changes to
upstream dts files will be done using overlays in arch/$ARCH/dts/.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

7 files changed, 310 insertions, 0 deletions

diff --git a/dts/Bindings/mips/cavium/bootbus.txt b/dts/Bindings/mips/cavium/bootbus.txt
new file mode 100644
index 0000000000..6581478225
--- /dev/null
+++ b/dts/Bindings/mips/cavium/bootbus.txt
@@ -0,0 +1,126 @@
+* Boot Bus
+
+The Octeon Boot Bus is a configurable parallel bus with 8 chip
+selects.  Each chip select is independently configurable.
+
+Properties:
+- compatible: "cavium,octeon-3860-bootbus"
+
+  Compatibility with all cn3XXX, cn5XXX and cn6XXX SOCs.
+
+- reg: The base address of the Boot Bus' register bank.
+
+- #address-cells: Must be <2>.  The first cell is the chip select
+   within the bootbus.  The second cell is the offset from the chip select.
+
+- #size-cells: Must be <1>.
+
+- ranges: There must be one one triplet of (child-bus-address,
+  parent-bus-address, length) for each active chip select.  If the
+  length element for any triplet is zero, the chip select is disabled,
+  making it inactive.
+
+The configuration parameters for each chip select are stored in child
+nodes.
+
+Configuration Properties:
+- compatible:  "cavium,octeon-3860-bootbus-config"
+
+- cavium,cs-index: A single cell indicating the chip select that
+  corresponds to this configuration.
+
+- cavium,t-adr: A cell specifying the ADR timing (in nS).
+
+- cavium,t-ce: A cell specifying the CE timing (in nS).
+
+- cavium,t-oe: A cell specifying the OE timing (in nS).
+
+- cavium,t-we: A cell specifying the WE timing (in nS).
+
+- cavium,t-rd-hld: A cell specifying the RD_HLD timing (in nS).
+
+- cavium,t-wr-hld: A cell specifying the WR_HLD timing (in nS).
+
+- cavium,t-pause: A cell specifying the PAUSE timing (in nS).
+
+- cavium,t-wait: A cell specifying the WAIT timing (in nS).
+
+- cavium,t-page: A cell specifying the PAGE timing (in nS).
+
+- cavium,t-rd-dly: A cell specifying the RD_DLY timing (in nS).
+
+- cavium,pages: A cell specifying the PAGES parameter (0 = 8 bytes, 1
+  = 2 bytes, 2 = 4 bytes, 3 = 8 bytes).
+
+- cavium,wait-mode: Optional.  If present, wait mode (WAITM) is selected.
+
+- cavium,page-mode: Optional.  If present, page mode (PAGEM) is selected.
+
+- cavium,bus-width: A cell specifying the WIDTH parameter (in bits) of
+  the bus for this chip select.
+
+- cavium,ale-mode: Optional.  If present, ALE mode is selected.
+
+- cavium,sam-mode: Optional.  If present, SAM mode is selected.
+
+- cavium,or-mode: Optional.  If present, OR mode is selected.
+
+Example:
+	bootbus: bootbus@1180000000000 {
+		compatible = "cavium,octeon-3860-bootbus";
+		reg = <0x11800 0x00000000 0x0 0x200>;
+		/* The chip select number and offset */
+		#address-cells = <2>;
+		/* The size of the chip select region */
+		#size-cells = <1>;
+		ranges = <0 0  0x0 0x1f400000  0xc00000>,
+			 <1 0  0x10000 0x30000000  0>,
+			 <2 0  0x10000 0x40000000  0>,
+			 <3 0  0x10000 0x50000000  0>,
+			 <4 0  0x0 0x1d020000  0x10000>,
+			 <5 0  0x0 0x1d040000  0x10000>,
+			 <6 0  0x0 0x1d050000  0x10000>,
+			 <7 0  0x10000 0x90000000  0>;
+
+			cavium,cs-config@0 {
+			compatible = "cavium,octeon-3860-bootbus-config";
+			cavium,cs-index = <0>;
+			cavium,t-adr  = <20>;
+			cavium,t-ce   = <60>;
+			cavium,t-oe   = <60>;
+			cavium,t-we   = <45>;
+			cavium,t-rd-hld = <35>;
+			cavium,t-wr-hld = <45>;
+			cavium,t-pause  = <0>;
+			cavium,t-wait   = <0>;
+			cavium,t-page   = <35>;
+			cavium,t-rd-dly = <0>;
+
+			cavium,pages     = <0>;
+			cavium,bus-width = <8>;
+		};
+		.
+		.
+		.
+		cavium,cs-config@6 {
+			compatible = "cavium,octeon-3860-bootbus-config";
+			cavium,cs-index = <6>;
+			cavium,t-adr  = <5>;
+			cavium,t-ce   = <300>;
+			cavium,t-oe   = <270>;
+			cavium,t-we   = <150>;
+			cavium,t-rd-hld = <100>;
+			cavium,t-wr-hld = <70>;
+			cavium,t-pause  = <0>;
+			cavium,t-wait   = <0>;
+			cavium,t-page   = <320>;
+			cavium,t-rd-dly = <0>;
+
+			cavium,pages     = <0>;
+			cavium,wait-mode;
+			cavium,bus-width = <16>;
+		};
+		.
+		.
+		.
+	};
diff --git a/dts/Bindings/mips/cavium/ciu.txt b/dts/Bindings/mips/cavium/ciu.txt
new file mode 100644
index 0000000000..2c2d0746b4
--- /dev/null
+++ b/dts/Bindings/mips/cavium/ciu.txt
@@ -0,0 +1,26 @@
+* Central Interrupt Unit
+
+Properties:
+- compatible: "cavium,octeon-3860-ciu"
+
+  Compatibility with all cn3XXX, cn5XXX and cn63XX SOCs.
+
+- interrupt-controller:  This is an interrupt controller.
+
+- reg: The base address of the CIU's register bank.
+
+- #interrupt-cells: Must be <2>.  The first cell is the bank within
+   the CIU and may have a value of 0 or 1.  The second cell is the bit
+   within the bank and may have a value between 0 and 63.
+
+Example:
+	interrupt-controller@1070000000000 {
+		compatible = "cavium,octeon-3860-ciu";
+		interrupt-controller;
+		/* Interrupts are specified by two parts:
+		 * 1) Controller register (0 or 1)
+		 * 2) Bit within the register (0..63)
+		 */
+		#interrupt-cells = <2>;
+		reg = <0x10700 0x00000000 0x0 0x7000>;
+	};
diff --git a/dts/Bindings/mips/cavium/ciu2.txt b/dts/Bindings/mips/cavium/ciu2.txt
new file mode 100644
index 0000000000..0ec7ba8bbb
--- /dev/null
+++ b/dts/Bindings/mips/cavium/ciu2.txt
@@ -0,0 +1,27 @@
+* Central Interrupt Unit
+
+Properties:
+- compatible: "cavium,octeon-6880-ciu2"
+
+  Compatibility with 68XX SOCs.
+
+- interrupt-controller:  This is an interrupt controller.
+
+- reg: The base address of the CIU's register bank.
+
+- #interrupt-cells: Must be <2>.  The first cell is the bank within
+  the CIU and may have a value between 0 and 63.  The second cell is
+  the bit within the bank and may also have a value between 0 and 63.
+
+Example:
+	interrupt-controller@1070100000000 {
+		compatible = "cavium,octeon-6880-ciu2";
+		interrupt-controller;
+		/* Interrupts are specified by two parts:
+		 * 1) Controller register (0..63)
+		 * 2) Bit within the register (0..63)
+		 */
+		#address-cells = <0>;
+		#interrupt-cells = <2>;
+		reg = <0x10701 0x00000000 0x0 0x4000000>;
+	};
diff --git a/dts/Bindings/mips/cavium/dma-engine.txt b/dts/Bindings/mips/cavium/dma-engine.txt
new file mode 100644
index 0000000000..a5bdff4000
--- /dev/null
+++ b/dts/Bindings/mips/cavium/dma-engine.txt
@@ -0,0 +1,21 @@
+* DMA Engine.
+
+The Octeon DMA Engine transfers between the Boot Bus and main memory.
+The DMA Engine will be referred to by phandle by any device that is
+connected to it.
+
+Properties:
+- compatible: "cavium,octeon-5750-bootbus-dma"
+
+  Compatibility with all cn52XX, cn56XX and cn6XXX SOCs.
+
+- reg: The base address of the DMA Engine's register bank.
+
+- interrupts: A single interrupt specifier.
+
+Example:
+	dma0: dma-engine@1180000000100 {
+		compatible = "cavium,octeon-5750-bootbus-dma";
+		reg = <0x11800 0x00000100 0x0 0x8>;
+		interrupts = <0 63>;
+	};
diff --git a/dts/Bindings/mips/cavium/uctl.txt b/dts/Bindings/mips/cavium/uctl.txt
new file mode 100644
index 0000000000..aa66b9b8d8
--- /dev/null
+++ b/dts/Bindings/mips/cavium/uctl.txt
@@ -0,0 +1,46 @@
+* UCTL USB controller glue
+
+Properties:
+- compatible: "cavium,octeon-6335-uctl"
+
+  Compatibility with all cn6XXX SOCs.
+
+- reg: The base address of the UCTL register bank.
+
+- #address-cells: Must be <2>.
+
+- #size-cells: Must be <2>.
+
+- ranges: Empty to signify direct mapping of the children.
+
+- refclk-frequency: A single cell containing the reference clock
+  frequency in Hz.
+
+- refclk-type: A string describing the reference clock connection
+  either "crystal" or "external".
+
+Example:
+	uctl@118006f000000 {
+		compatible = "cavium,octeon-6335-uctl";
+		reg = <0x11800 0x6f000000 0x0 0x100>;
+		ranges; /* Direct mapping */
+		#address-cells = <2>;
+		#size-cells = <2>;
+		/* 12MHz, 24MHz and 48MHz allowed */
+		refclk-frequency = <24000000>;
+		/* Either "crystal" or "external" */
+		refclk-type = "crystal";
+
+		ehci@16f0000000000 {
+			compatible = "cavium,octeon-6335-ehci","usb-ehci";
+			reg = <0x16f00 0x00000000 0x0 0x100>;
+			interrupts = <0 56>;
+			big-endian-regs;
+		};
+		ohci@16f0000000400 {
+			compatible = "cavium,octeon-6335-ohci","usb-ohci";
+			reg = <0x16f00 0x00000400 0x0 0x100>;
+			interrupts = <0 56>;
+			big-endian-regs;
+		};
+	};
diff --git a/dts/Bindings/mips/cpu_irq.txt b/dts/Bindings/mips/cpu_irq.txt
new file mode 100644
index 0000000000..13aa4b62c6
--- /dev/null
+++ b/dts/Bindings/mips/cpu_irq.txt
@@ -0,0 +1,47 @@
+MIPS CPU interrupt controller
+
+On MIPS the mips_cpu_intc_init() helper can be used to initialize the 8 CPU
+IRQs from a devicetree file and create a irq_domain for IRQ controller.
+
+With the irq_domain in place we can describe how the 8 IRQs are wired to the
+platforms internal interrupt controller cascade.
+
+Below is an example of a platform describing the cascade inside the devicetree
+and the code used to load it inside arch_init_irq().
+
+Required properties:
+- compatible : Should be "mti,cpu-interrupt-controller"
+
+Example devicetree:
+	cpu-irq: cpu-irq@0 {
+		#address-cells = <0>;
+
+		interrupt-controller;
+		#interrupt-cells = <1>;
+
+		compatible = "mti,cpu-interrupt-controller";
+	};
+
+	intc: intc@200 {
+		compatible = "ralink,rt2880-intc";
+		reg = <0x200 0x100>;
+
+		interrupt-controller;
+		#interrupt-cells = <1>;
+
+		interrupt-parent = <&cpu-irq>;
+		interrupts = <2>;
+	};
+
+
+Example platform irq.c:
+static struct of_device_id __initdata of_irq_ids[] = {
+	{ .compatible = "mti,cpu-interrupt-controller", .data = mips_cpu_intc_init },
+	{ .compatible = "ralink,rt2880-intc", .data = intc_of_init },
+	{},
+};
+
+void __init arch_init_irq(void)
+{
+	of_irq_init(of_irq_ids);
+}
diff --git a/dts/Bindings/mips/ralink.txt b/dts/Bindings/mips/ralink.txt
new file mode 100644
index 0000000000..b35a8d04f8
--- /dev/null
+++ b/dts/Bindings/mips/ralink.txt
@@ -0,0 +1,17 @@
+Ralink MIPS SoC device tree bindings
+
+1. SoCs
+
+Each device tree must specify a compatible value for the Ralink SoC
+it uses in the compatible property of the root node. The compatible
+value must be one of the following values:
+
+  ralink,rt2880-soc
+  ralink,rt3050-soc
+  ralink,rt3052-soc
+  ralink,rt3350-soc
+  ralink,rt3352-soc
+  ralink,rt3883-soc
+  ralink,rt5350-soc
+  ralink,mt7620a-soc
+  ralink,mt7620n-soc