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author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2012-09-05 07:57:19 +0200 |
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committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2012-09-05 07:57:19 +0200 |
commit | e6c340171f0daaccc95b90abbeed2b837157ee11 (patch) | |
tree | 843d4035be59bd791321910e52157ce527b3b4b3 /Documentation/devicetree/bindings/gpio/cavium-octeon-gpio.txt | |
parent | Input: tegra - move platform data header (diff) | |
parent | Linux 3.6-rc4 (diff) | |
download | linux-e6c340171f0daaccc95b90abbeed2b837157ee11.tar.xz linux-e6c340171f0daaccc95b90abbeed2b837157ee11.zip |
Merge tag 'v3.6-rc4' into next
Linux 3.6-rc4
# gpg: Signature made Sat 01 Sep 2012 10:40:33 AM PDT using RSA key ID 00411886
# gpg: Good signature from "Linus Torvalds <torvalds@linux-foundation.org>"
Diffstat (limited to 'Documentation/devicetree/bindings/gpio/cavium-octeon-gpio.txt')
-rw-r--r-- | Documentation/devicetree/bindings/gpio/cavium-octeon-gpio.txt | 49 |
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>; + }; |