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authorLinus Torvalds <torvalds@linux-foundation.org>2012-07-30 20:45:52 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2012-07-30 20:45:52 +0200
commit287dc4b7642df15fa6b9f286c812e79138acd698 (patch)
treec3ebe1caea100ff2b8f414619ec0a9dcd8a14547 /Documentation/devicetree/bindings/gpio
parentMerge branch 'slab/next' of git://git.kernel.org/pub/scm/linux/kernel/git/pen... (diff)
parentMerge branches 'next/generic', 'next/alchemy', 'next/bcm63xx', 'next/cavium',... (diff)
downloadlinux-287dc4b7642df15fa6b9f286c812e79138acd698.tar.xz
linux-287dc4b7642df15fa6b9f286c812e79138acd698.zip
Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS updates from Ralf Baechle: "More hardware support across the field including a bunch of device drivers. The highlight however really are further steps towards device tree. This has been sitting in -next for ages. All MIPS _defconfigs have been tested to boot or where I don't have hardware available, to at least build fine." * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (77 commits) MIPS: Loongson 1B: Add defconfig MIPS: Loongson 1B: Add board support MIPS: Netlogic: early console fix MIPS: Netlogic: Fix indentation of smpboot.S MIPS: Netlogic: remove cpu_has_dc_aliases define for XLP MIPS: Netlogic: Remove unused pcibios_fixups MIPS: Netlogic: Add XLP SoC devices in FDT MIPS: Netlogic: Add IRQ mappings for more devices MIPS: Netlogic: USB support for XLP MIPS: Netlogic: XLP PCIe controller support. MIPS: Netlogic: Platform changes for XLR/XLS I2C MIPS: Netlogic: Platform NAND/NOR flash support MIPS: Netlogic: Platform changes for XLS USB MIPS: Netlogic: Remove NETLOGIC_ prefix MIPS: Netlogic: SMP wakeup code update MIPS: Netlogic: Update comments in smpboot.S MIPS: BCM63XX: Add 96328avng reference board MIPS: Expose PCIe drivers for MIPS MIPS: BCM63XX: Add PCIe Support for BCM6328 MIPS: BCM63XX: Move the PCI initialization into its own function ...
Diffstat (limited to 'Documentation/devicetree/bindings/gpio')
-rw-r--r--Documentation/devicetree/bindings/gpio/cavium-octeon-gpio.txt49
1 files changed, 49 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/gpio/cavium-octeon-gpio.txt b/Documentation/devicetree/bindings/gpio/cavium-octeon-gpio.txt
new file mode 100644
index 000000000000..9d6dcd3fe7f9
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/cavium-octeon-gpio.txt
@@ -0,0 +1,49 @@
+* General Purpose Input Output (GPIO) bus.
+
+Properties:
+- compatible: "cavium,octeon-3860-gpio"
+
+ Compatibility with all cn3XXX, cn5XXX and cn6XXX SOCs.
+
+- reg: The base address of the GPIO unit's register bank.
+
+- gpio-controller: This is a GPIO controller.
+
+- #gpio-cells: Must be <2>. The first cell is the GPIO pin.
+
+- interrupt-controller: The GPIO controller is also an interrupt
+ controller, many of its pins may be configured as an interrupt
+ source.
+
+- #interrupt-cells: Must be <2>. The first cell is the GPIO pin
+ connected to the interrupt source. The second cell is the interrupt
+ triggering protocol and may have one of four values:
+ 1 - edge triggered on the rising edge.
+ 2 - edge triggered on the falling edge
+ 4 - level triggered active high.
+ 8 - level triggered active low.
+
+- interrupts: Interrupt routing for each pin.
+
+Example:
+
+ gpio-controller@1070000000800 {
+ #gpio-cells = <2>;
+ compatible = "cavium,octeon-3860-gpio";
+ reg = <0x10700 0x00000800 0x0 0x100>;
+ gpio-controller;
+ /* Interrupts are specified by two parts:
+ * 1) GPIO pin number (0..15)
+ * 2) Triggering (1 - edge rising
+ * 2 - edge falling
+ * 4 - level active high
+ * 8 - level active low)
+ */
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ /* The GPIO pin connect to 16 consecutive CUI bits */
+ interrupts = <0 16>, <0 17>, <0 18>, <0 19>,
+ <0 20>, <0 21>, <0 22>, <0 23>,
+ <0 24>, <0 25>, <0 26>, <0 27>,
+ <0 28>, <0 29>, <0 30>, <0 31>;
+ };