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https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git
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db3e34d403
Instead of trying to map INT GPIO to interrupt, let's use one supplied by I2C client. If there is none - bail. This will also allow us to treat INT GPIO as optional, as per the binding. Tested-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
34 lines
1.1 KiB
Plaintext
34 lines
1.1 KiB
Plaintext
* Rohm BU21013 Touch Screen
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Required properties:
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- compatible : "rohm,bu21013_tp"
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- reg : I2C device address
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- reset-gpios : GPIO pin enabling (selecting) chip (CS)
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- interrupt-parent : the phandle for the gpio controller
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- interrupts : (gpio) interrupt to which the chip is connected
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Optional properties:
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- touch-gpios : GPIO pin registering a touch event
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- <supply_name>-supply : Phandle to a regulator supply
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- rohm,touch-max-x : Maximum outward permitted limit in the X axis
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- rohm,touch-max-y : Maximum outward permitted limit in the Y axis
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- rohm,flip-x : Flip touch coordinates on the X axis
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- rohm,flip-y : Flip touch coordinates on the Y axis
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Example:
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i2c@80110000 {
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bu21013_tp@5c {
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compatible = "rohm,bu21013_tp";
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reg = <0x5c>;
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interrupt-parent = <&gpio2>;
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interrupts <&20 IRQ_TYPE_LEVEL_LOW>;
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touch-gpio = <&gpio2 20 GPIO_ACTIVE_LOW>;
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avdd-supply = <&ab8500_ldo_aux1_reg>;
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rohm,touch-max-x = <384>;
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rohm,touch-max-y = <704>;
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rohm,flip-y;
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};
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};
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