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Diffstat (limited to 'Documentation/devicetree/bindings/input/touchscreen/fsl,imx6ul-tsc.yaml')
-rw-r--r-- | Documentation/devicetree/bindings/input/touchscreen/fsl,imx6ul-tsc.yaml | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/input/touchscreen/fsl,imx6ul-tsc.yaml b/Documentation/devicetree/bindings/input/touchscreen/fsl,imx6ul-tsc.yaml new file mode 100644 index 0000000000..678756ad0f --- /dev/null +++ b/Documentation/devicetree/bindings/input/touchscreen/fsl,imx6ul-tsc.yaml @@ -0,0 +1,97 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/input/touchscreen/fsl,imx6ul-tsc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Freescale i.MX6UL Touch Controller + +maintainers: + - Haibo Chen <haibo.chen@nxp.com> + - Shawn Guo <shawnguo@kernel.org> + - Sascha Hauer <s.hauer@pengutronix.de> + +properties: + compatible: + const: fsl,imx6ul-tsc + + reg: + items: + - description: touch controller address + - description: ADC2 address + + interrupts: + items: + - description: touch controller address + - description: ADC2 address + + clocks: + maxItems: 2 + + clock-names: + items: + - const: tsc + - const: adc + + xnur-gpios: + maxItems: 1 + description: + 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). + + measure-delay-time: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + The value of measure delay time. Before X-axis or Y-axis measurement, + the screen need some time before even potential distribution ready. + default: 0xffff + minimum: 0 + maximum: 0xffffff + + pre-charge-time: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + The touch screen need some time to precharge. + default: 0xfff + minimum: 0 + maximum: 0xffffffff + + touchscreen-average-samples: + $ref: /schemas/types.yaml#/definitions/uint32 + description: Number of data samples which are averaged for each read. + enum: [ 1, 4, 8, 16, 32 ] + +required: + - compatible + - reg + - interrupts + - clocks + - clock-names + - xnur-gpios + +allOf: + - $ref: touchscreen.yaml# + +additionalProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/arm-gic.h> + #include <dt-bindings/clock/imx6ul-clock.h> + #include <dt-bindings/gpio/gpio.h> + touchscreen@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-gpios = <&gpio1 3 GPIO_ACTIVE_LOW>; + measure-delay-time = <0xfff>; + pre-charge-time = <0xffff>; + touchscreen-average-samples = <32>; + }; |