* Sebastian Reichel <sre@xxxxxxxxxx> [131205 15:11]:
> Add devicetree binding documentation for TSC2005 touchscreen.
>
> Signed-off-by: Sebastian Reichel <sre@xxxxxxxxxx>
> ---
> .../bindings/input/touchscreen/tsc2005.txt | 49 ++++++++++++++++++++++
> 1 file changed, 49 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/input/touchscreen/tsc2005.txt
>
> diff --git a/Documentation/devicetree/bindings/input/touchscreen/tsc2005.txt b/Documentation/devicetree/bindings/input/touchscreen/tsc2005.txt
> new file mode 100644
> index 0000000..4e7df0b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/input/touchscreen/tsc2005.txt
> @@ -0,0 +1,49 @@
> +* TSC2005 Touchscreen
> +
> +Required properties:
> + - compatible : "ti,tsc2005"
> + - reg : SPI device address
> + - spi-max-frequency : Maximal SPI speed
> + - interrupts : IRQ specifier
> + - reset-gpio : GPIO specifier
> +
> +Optional properties:
> + - ti,fuzz-x : integer, X noise value of the touchscreen
> + (defaults to 4)
> + - ti,fuzz-y : integer, Y noise value of the touchscreen
> + (defaults to 8)
> + - ti,fuzz-pressure : integer, pressure noise value of the touchscreen
> + (defaults to 2)
> + - ti,max-x : integer, maximum reported x value
> + (defaults to 4096)
> + - ti,max-y : integer, maximum reported y value
> + (defaults to 4096)
> + - ti,max-pressure : integer, maximum reported pressure
> + (defaults to 4096)
> + - ti,x-plate-resistance : integer, resistance of the touchscreen's X plates
> + in ohm (defaults to 280)
> + - ti,esd-recovery-timeout-ms : integer, if the touchscreen does not respond after
> + the configured time (in milli seconds), the driver
> + will reset it. This is disabled by default.
Instead of adding these optional ti,* properties you can set them in the
driver directly in the of_match table based on the compatible flag. Then
you can pass compatible flag like ti,tsc2005-nokia-n900, or the name of
the LCD panel. Most likely these depend on the LCD panel selected.
Regards,
Tony
> +Example:
> +
> +&mcspi1 {
> + tsc2005@0 {
> + compatible = "ti,tsc2005";
> + spi-max-frequency = <6000000>;
> + reg = <0>;
> + reset-gpio = <&gpio4 8 GPIO_ACTIVE_HIGH>; /* 104 */
> + interrupt-parent = <&gpio4>;
> + interrupts = <4 IRQ_TYPE_NONE>; /* gpio line 100 */
> +
> + ti,fuzz-x = <4>;
> + ti,fuzz-y = <7>;
> + ti,fuzz-pressure = <2>;
> + ti,max-x = <4096>;
> + ti,max-y = <4096>;
> + ti,max-pressure = <2048>;
> + ti,x-plate-resistance = <280>;
> + ti,esd-recovery-timeout-ms = <8000>;
> + };
> +}
> --
> 1.8.4.3
>
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