38f56f33ca
Pull ARM SoC device tree updates (part 2) from Arnd Bergmann: "These are mostly new device tree bindings for existing drivers, as well as changes to the device tree source files to add support for those devices, and a couple of new boards, most notably Samsung's Exynos5 based Chromebook. The changes depend on earlier platform specific updates and touch the usual platforms: omap, exynos, tegra, mxs, mvebu and davinci." * tag 'dt-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (169 commits) ARM: exynos: dts: cros5250: add EC device ARM: dts: Add sbs-battery for exynos5250-snow ARM: dts: Add i2c-arbitrator bus for exynos5250-snow ARM: dts: add mshc controller node for Exynos4x12 SoCs ARM: dts: Add chip-id controller node on Exynos4/5 SoC ARM: EXYNOS: Create virtual I/O mapping for Chip-ID controller using device tree ARM: davinci: da850-evm: add SPI flash support ARM: davinci: da850: override SPI DT node device name ARM: davinci: da850: add SPI1 DT node spi/davinci: add DT binding documentation spi/davinci: no wildcards in DT compatible property ARM: dts: mvebu: Convert mvebu device tree files to 64 bits ARM: dts: mvebu: introduce internal-regs node ARM: dts: mvebu: Convert all the mvebu files to use the range property ARM: dts: mvebu: move all peripherals inside soc ARM: dts: mvebu: fix cpus section indentation ARM: davinci: da850: add EHRPWM & ECAP DT node ARM/dts: OMAP3: fix pinctrl-single configuration ARM: dts: Add OMAP3430 SDP NOR flash memory binding ARM: dts: Add NOR flash bindings for OMAP2420 H4 ...
40 lines
1.2 KiB
Plaintext
40 lines
1.2 KiB
Plaintext
OMAP GPIO controller bindings
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Required properties:
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- compatible:
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- "ti,omap2-gpio" for OMAP2 controllers
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- "ti,omap3-gpio" for OMAP3 controllers
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- "ti,omap4-gpio" for OMAP4 controllers
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- gpio-controller : Marks the device node as a GPIO controller.
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- #gpio-cells : Should be two.
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- first cell is the pin number
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- second cell is used to specify optional parameters (unused)
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- interrupt-controller: Mark the device node as an interrupt controller.
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- #interrupt-cells : Should be 2.
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The first cell is the GPIO number.
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The second cell is used to specify flags:
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bits[3:0] trigger type and level flags:
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1 = low-to-high edge triggered.
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2 = high-to-low edge triggered.
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4 = active high level-sensitive.
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8 = active low level-sensitive.
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OMAP specific properties:
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- ti,hwmods: Name of the hwmod associated to the GPIO:
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"gpio<X>", <X> being the 1-based instance number
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from the HW spec.
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- ti,gpio-always-on: Indicates if a GPIO bank is always powered and
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so will never lose its logic state.
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Example:
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gpio4: gpio4 {
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compatible = "ti,omap4-gpio";
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ti,hwmods = "gpio4";
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gpio-controller;
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#gpio-cells = <2>;
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interrupt-controller;
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#interrupt-cells = <2>;
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};
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