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a748941c95
This adds support for the i2c based tsc2004 touchscreen controller. Signed-off-by: Michael Welling <mwelling@ieee.org> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
65 lines
1.7 KiB
Plaintext
65 lines
1.7 KiB
Plaintext
* Texas Instruments tsc2004 and tsc2005 touchscreen controllers
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Required properties:
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- compatible : "ti,tsc2004" or "ti,tsc2005"
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- reg : Device address
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- interrupts : IRQ specifier
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- spi-max-frequency : Maximum SPI clocking speed of the device
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(for tsc2005)
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Optional properties:
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- vio-supply : Regulator specifier
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- reset-gpios : GPIO specifier for the controller reset line
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- ti,x-plate-ohms : integer, resistance of the touchscreen's X plates
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in ohm (defaults to 280)
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- ti,esd-recovery-timeout-ms : integer, if the touchscreen does not respond after
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the configured time (in milli seconds), the driver
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will reset it. This is disabled by default.
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- properties defined in touchscreen.txt
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Example:
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&i2c3 {
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tsc2004@48 {
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compatible = "ti,tsc2004";
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reg = <0x48>;
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vio-supply = <&vio>;
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reset-gpios = <&gpio4 8 GPIO_ACTIVE_HIGH>;
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interrupts-extended = <&gpio1 27 IRQ_TYPE_EDGE_RISING>;
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touchscreen-fuzz-x = <4>;
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touchscreen-fuzz-y = <7>;
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touchscreen-fuzz-pressure = <2>;
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touchscreen-size-x = <4096>;
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touchscreen-size-y = <4096>;
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touchscreen-max-pressure = <2048>;
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ti,x-plate-ohms = <280>;
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ti,esd-recovery-timeout-ms = <8000>;
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};
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}
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&mcspi1 {
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tsc2005@0 {
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compatible = "ti,tsc2005";
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spi-max-frequency = <6000000>;
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reg = <0>;
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vio-supply = <&vio>;
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reset-gpios = <&gpio4 8 GPIO_ACTIVE_HIGH>; /* 104 */
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interrupts-extended = <&gpio4 4 IRQ_TYPE_EDGE_RISING>; /* 100 */
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touchscreen-fuzz-x = <4>;
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touchscreen-fuzz-y = <7>;
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touchscreen-fuzz-pressure = <2>;
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touchscreen-size-x = <4096>;
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touchscreen-size-y = <4096>;
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touchscreen-max-pressure = <2048>;
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ti,x-plate-ohms = <280>;
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ti,esd-recovery-timeout-ms = <8000>;
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};
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}
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