f948ad0787
Pull GPIO changes from Linus Walleij: - New driver for AMD-8111 southbridge GPIOs - New driver for Wolfson Micro Arizona devices - Propagate device tree parse errors - Probe deferral finalizations - all expected calls to GPIO will now hopefully request deferral where apropriate - Misc updates to TCA6424, WM8994, LPC32xx, PCF857x, Samsung MXC, OMAP and PCA953X drivers. Fix up gpio_idx conflicts in drivers/gpio/gpio-mxc.c * tag 'gpio-for-v3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: gpio: of_get_named_gpio_flags() return -EPROBE_DEFER if GPIO not yet available gpiolib: Defer failed gpio requests by default MAINTAINERS: add entry OMAP GPIO driver gpio/pca953x: increase variables size to support 24 bit of data GPIO: PCA953X: Increase size of invert variable to support 24 bit gpio/omap: move bank->dbck initialization to omap_gpio_mod_init() gpio/mxc: use the edge_sel feature if available gpio: propagate of_parse_phandle_with_args errors gpio: samsung: add flags specifier to device-tree binding gpiolib: Add support for Wolfson Microelectronics Arizona class devices gpio: gpio-lpc32xx: Add gpio_to_irq mapping gpio: pcf857x: share 8/16 bit access functions gpio: LPC32xx: Driver cleanup MAINTAINERS: Add Wolfson gpiolib drivers to the Wolfson entry gpiolib: wm8994: Convert to devm_kzalloc() gpiolib: wm8994: Use irq_domain mappings for gpios gpio: add a driver for GPIO pins found on AMD-8111 south bridge chips gpio/tca6424: merge I2C transactions, remove cast gpio/of: fix a typo of comment message
33 lines
1.2 KiB
Plaintext
33 lines
1.2 KiB
Plaintext
* Freescale i.MX/MXC GPIO controller
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Required properties:
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- compatible : Should be "fsl,<soc>-gpio"
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- reg : Address and length of the register set for the device
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- interrupts : Should be the port interrupt shared by all 32 pins, if
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one number. If two numbers, the first one is the interrupt shared
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by low 16 pins and the second one is for high 16 pins.
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- gpio-controller : Marks the device node as a gpio controller.
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- #gpio-cells : Should be two. The first cell is the pin number and
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the second cell is used to specify the gpio polarity:
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0 = active high
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1 = active low
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- interrupt-controller: Marks the device node as an interrupt controller.
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- #interrupt-cells : Should be 2. The first cell is the GPIO number.
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The second cell bits[3:0] is used to specify 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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Example:
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gpio0: gpio@73f84000 {
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compatible = "fsl,imx51-gpio", "fsl,imx35-gpio";
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reg = <0x73f84000 0x4000>;
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interrupts = <50 51>;
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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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