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Diffstat (limited to 'Documentation/devicetree/bindings/input/touchscreen/imx6ul_tsc.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/input/touchscreen/imx6ul_tsc.txt | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/input/touchscreen/imx6ul_tsc.txt b/Documentation/devicetree/bindings/input/touchscreen/imx6ul_tsc.txt new file mode 100644 index 000000000..164915004 --- /dev/null +++ b/Documentation/devicetree/bindings/input/touchscreen/imx6ul_tsc.txt @@ -0,0 +1,38 @@ +* Freescale i.MX6UL Touch Controller + +Required properties: +- compatible: must be "fsl,imx6ul-tsc". +- reg: this touch controller address and the ADC2 address. +- interrupts: the interrupt of this touch controller and ADC2. +- clocks: the root clock of touch controller and ADC2. +- clock-names; must be "tsc" and "adc". +- xnur-gpio: the X- gpio this controller connect to. + This xnur-gpio returns to low once the finger leave the touch screen (The + last touch event the touch controller capture). + +Optional properties: +- measure-delay-time: the value of measure delay time. + Before X-axis or Y-axis measurement, the screen need some time before + even potential distribution ready. + This value depends on the touch screen. +- pre-charge-time: the touch screen need some time to precharge. + This value depends on the touch screen. +- touchscreen-average-samples: Number of data samples which are averaged for + each read. Valid values are 1, 4, 8, 16 and 32. + +Example: + tsc: tsc@2040000 { + compatible = "fsl,imx6ul-tsc"; + reg = <0x02040000 0x4000>, <0x0219c000 0x4000>; + interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&clks IMX6UL_CLK_IPG>, + <&clks IMX6UL_CLK_ADC2>; + clock-names = "tsc", "adc"; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_tsc>; + xnur-gpio = <&gpio1 3 GPIO_ACTIVE_LOW>; + measure-delay-time = <0xfff>; + pre-charge-time = <0xffff>; + touchscreen-average-samples = <32>; + }; |