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author | Arnd Bergmann <arnd@arndb.de> | 2012-01-09 17:06:36 +0000 |
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committer | Arnd Bergmann <arnd@arndb.de> | 2012-01-09 17:06:36 +0000 |
commit | 421b759b86eb8a914cbbd11f6d09a74f411762c6 (patch) | |
tree | 505ca7f23987d8eaaa519a7e8506b854e2c0d030 /Documentation/devicetree/bindings/gpio/gpio-samsung.txt | |
parent | e067096c8d57d191f29d734cd5692695c95cc36e (diff) | |
parent | a07613a54d700a974f3a4a657da78ef5d097315d (diff) | |
download | op-kernel-dev-421b759b86eb8a914cbbd11f6d09a74f411762c6.zip op-kernel-dev-421b759b86eb8a914cbbd11f6d09a74f411762c6.tar.gz |
Merge branch 'samsung/cleanup' into next/boards
Conflicts:
arch/arm/mach-imx/mach-imx6q.c
arch/arm/mach-omap2/board-ti8168evm.c
arch/arm/mach-s3c64xx/Kconfig
arch/arm/mach-tegra/Makefile
arch/arm/mach-tegra/board-dt-tegra20.c
arch/arm/mach-tegra/common.c
Lots of relatively simple conflicts between the board
changes and stuff from the arm tree. This pulls in
the resolution from the samsung/cleanup tree, so we
don't get conflicting merges.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'Documentation/devicetree/bindings/gpio/gpio-samsung.txt')
-rw-r--r-- | Documentation/devicetree/bindings/gpio/gpio-samsung.txt | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/gpio/gpio-samsung.txt b/Documentation/devicetree/bindings/gpio/gpio-samsung.txt new file mode 100644 index 0000000..8f50fe5 --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/gpio-samsung.txt @@ -0,0 +1,40 @@ +Samsung Exynos4 GPIO Controller + +Required properties: +- compatible: Compatible property value should be "samsung,exynos4-gpio>". + +- reg: Physical base address of the controller and length of memory mapped + region. + +- #gpio-cells: Should be 4. 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] + [pull up/down] + [drive strength]> + + Values for gpio specifier: + - Pin number: is a value between 0 to 7. + - Pull Up/Down: 0 - Pull Up/Down Disabled. + 1 - Pull Down Enabled. + 3 - Pull Up Enabled. + - Drive Strength: 0 - 1x, + 1 - 3x, + 2 - 2x, + 3 - 4x + +- gpio-controller: Specifies that the node is a gpio controller. +- #address-cells: should be 1. +- #size-cells: should be 1. + +Example: + + gpa0: gpio-controller@11400000 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "samsung,exynos4-gpio"; + reg = <0x11400000 0x20>; + #gpio-cells = <4>; + gpio-controller; + }; |