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author | Arnd Bergmann <arnd@arndb.de> | 2012-10-05 00:57:00 +0400 |
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committer | Arnd Bergmann <arnd@arndb.de> | 2012-10-05 00:57:51 +0400 |
commit | c37d6154c0b9163c27e53cc1d0be3867b4abd760 (patch) | |
tree | 7a24522c56d1cb284dff1d3c225bbdaba0901bb5 /Documentation/devicetree/bindings/gpio | |
parent | e7a570ff7dff9af6e54ff5e580a61ec7652137a0 (diff) | |
parent | 8a1ab3155c2ac7fbe5f2038d6e26efeb607a1498 (diff) | |
download | linux-c37d6154c0b9163c27e53cc1d0be3867b4abd760.tar.xz |
Merge branch 'disintegrate-asm-generic' of git://git.infradead.org/users/dhowells/linux-headers into asm-generic
Patches from David Howells <dhowells@redhat.com>:
This is to complete part of the UAPI disintegration for which the
preparatory patches were pulled recently.
Note that there are some fixup patches which are at the base of the
branch aimed at you, plus all arches get the asm-generic branch merged in too.
* 'disintegrate-asm-generic' of git://git.infradead.org/users/dhowells/linux-headers:
UAPI: (Scripted) Disintegrate include/asm-generic
UAPI: Fix conditional header installation handling (notably kvm_para.h on m68k)
c6x: remove c6x signal.h
UAPI: Split compound conditionals containing __KERNEL__ in Arm64
UAPI: Fix the guards on various asm/unistd.h files
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'Documentation/devicetree/bindings/gpio')
6 files changed, 130 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/gpio/gpio-74x164.txt b/Documentation/devicetree/bindings/gpio/gpio-74x164.txt new file mode 100644 index 000000000000..cc2608021f26 --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/gpio-74x164.txt @@ -0,0 +1,22 @@ +* Generic 8-bits shift register GPIO driver + +Required properties: +- compatible : Should be "fairchild,74hc595" +- reg : chip select number +- gpio-controller : Marks the device node as a gpio controller. +- #gpio-cells : Should be two. The first cell is the pin number and + the second cell is used to specify the gpio polarity: + 0 = active high + 1 = active low +- registers-number: Number of daisy-chained shift registers + +Example: + +gpio5: gpio5@0 { + compatible = "fairchild,74hc595"; + reg = <0>; + gpio-controller; + #gpio-cells = <2>; + registers-number = <4>; + spi-max-frequency = <100000>; +}; diff --git a/Documentation/devicetree/bindings/gpio/gpio-adnp.txt b/Documentation/devicetree/bindings/gpio/gpio-adnp.txt new file mode 100644 index 000000000000..af66b2724837 --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/gpio-adnp.txt @@ -0,0 +1,34 @@ +Avionic Design N-bit GPIO expander bindings + +Required properties: +- compatible: should be "ad,gpio-adnp" +- reg: The I2C slave address for this device. +- interrupt-parent: phandle of the parent interrupt controller. +- interrupts: Interrupt specifier for the controllers interrupt. +- #gpio-cells: Should be 2. The first cell is the GPIO number and the + second cell is used to specify optional parameters: + - bit 0: polarity (0: normal, 1: inverted) +- gpio-controller: Marks the device as a GPIO controller +- nr-gpios: The number of pins supported by the controller. + +The GPIO expander can optionally be used as an interrupt controller, in +which case it uses the default two cell specifier as described in +Documentation/devicetree/bindings/interrupt-controller/interrupts.txt. + +Example: + + gpioext: gpio-controller@41 { + compatible = "ad,gpio-adnp"; + reg = <0x41>; + + interrupt-parent = <&gpio>; + interrupts = <160 1>; + + gpio-controller; + #gpio-cells = <2>; + + interrupt-controller; + #interrupt-cells = <2>; + + nr-gpios = <64>; + }; diff --git a/Documentation/devicetree/bindings/gpio/gpio-samsung.txt b/Documentation/devicetree/bindings/gpio/gpio-samsung.txt index 5375625e8cd2..f1e5dfecf55d 100644 --- a/Documentation/devicetree/bindings/gpio/gpio-samsung.txt +++ b/Documentation/devicetree/bindings/gpio/gpio-samsung.txt @@ -39,3 +39,46 @@ Example: #gpio-cells = <4>; gpio-controller; }; + + +Samsung S3C24XX GPIO Controller + +Required properties: +- compatible: Compatible property value should be "samsung,s3c24xx-gpio". + +- reg: Physical base address of the controller and length of memory mapped + region. + +- #gpio-cells: Should be 3. The syntax of the gpio specifier used by client nodes + should be the following with values derived from the SoC user manual. + <[phandle of the gpio controller node] + [pin number within the gpio controller] + [mux function] + [flags and pull up/down] + + Values for gpio specifier: + - Pin number: depending on the controller a number from 0 up to 15. + - Mux function: Depending on the SoC and the gpio bank the gpio can be set + as input, output or a special function + - Flags and Pull Up/Down: the values to use differ for the individual SoCs + example S3C2416/S3C2450: + 0 - Pull Up/Down Disabled. + 1 - Pull Down Enabled. + 2 - Pull Up Enabled. + Bit 16 (0x00010000) - Input is active low. + Consult the user manual for the correct values of Mux and Pull Up/Down. + +- gpio-controller: Specifies that the node is a gpio controller. +- #address-cells: should be 1. +- #size-cells: should be 1. + +Example: + + gpa: gpio-controller@56000000 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "samsung,s3c24xx-gpio"; + reg = <0x56000000 0x10>; + #gpio-cells = <3>; + gpio-controller; + }; diff --git a/Documentation/devicetree/bindings/gpio/gpio-twl4030.txt b/Documentation/devicetree/bindings/gpio/gpio-twl4030.txt index 16695d9cf1e8..66788fda1db3 100644 --- a/Documentation/devicetree/bindings/gpio/gpio-twl4030.txt +++ b/Documentation/devicetree/bindings/gpio/gpio-twl4030.txt @@ -11,6 +11,11 @@ Required properties: - interrupt-controller: Mark the device node as an interrupt controller The first cell is the GPIO number. The second cell is not used. +- ti,use-leds : Enables LEDA and LEDB outputs if set +- ti,debounce : if n-th bit is set, debounces GPIO-n +- ti,mmc-cd : if n-th bit is set, GPIO-n controls VMMC(n+1) +- ti,pullups : if n-th bit is set, set a pullup on GPIO-n +- ti,pulldowns : if n-th bit is set, set a pulldown on GPIO-n Example: @@ -20,4 +25,5 @@ twl_gpio: gpio { gpio-controller; #interrupt-cells = <2>; interrupt-controller; + ti,use-leds; }; diff --git a/Documentation/devicetree/bindings/gpio/gpio-vt8500.txt b/Documentation/devicetree/bindings/gpio/gpio-vt8500.txt new file mode 100644 index 000000000000..f4dc5233167e --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/gpio-vt8500.txt @@ -0,0 +1,24 @@ +VIA/Wondermedia VT8500 GPIO Controller +----------------------------------------------------- + +Required properties: +- compatible : "via,vt8500-gpio", "wm,wm8505-gpio" + or "wm,wm8650-gpio" depending on your SoC +- reg : Should contain 1 register range (address and length) +- #gpio-cells : should be <3>. + 1) bank + 2) pin number + 3) flags - should be 0 + +Example: + + gpio: gpio-controller@d8110000 { + compatible = "via,vt8500-gpio"; + gpio-controller; + reg = <0xd8110000 0x10000>; + #gpio-cells = <3>; + }; + + vibrate { + gpios = <&gpio 0 1 0>; /* Bank 0, Pin 1, No flags */ + }; diff --git a/Documentation/devicetree/bindings/gpio/led.txt b/Documentation/devicetree/bindings/gpio/led.txt index 9bb308abd221..edc83c1c0d54 100644 --- a/Documentation/devicetree/bindings/gpio/led.txt +++ b/Documentation/devicetree/bindings/gpio/led.txt @@ -8,7 +8,7 @@ node's name represents the name of the corresponding LED. LED sub-node properties: - gpios : Should specify the LED's GPIO, see "gpios property" in - Documentation/devicetree/gpio.txt. Active low LEDs should be + Documentation/devicetree/bindings/gpio/gpio.txt. Active low LEDs should be indicated using flags in the GPIO specifier. - label : (optional) The label for this LED. If omitted, the label is taken from the node name (excluding the unit address). |