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authorOleksij Rempel <o.rempel@pengutronix.de>2021-04-28 09:32:07 +0200
committerJonathan Cameron <Jonathan.Cameron@huawei.com>2021-05-17 13:49:11 +0100
commit03f2193a6bea24c8cd280433f783b417cda4c2e5 (patch)
treee4e9a70f81f231202fee7e5f90e895e40fa4a2a7 /Documentation
parentf7e196fc0815dea074b861a97503bf0d330f7165 (diff)
dt-bindings:iio:adc: add documentation for TI TSC2046 controller
Add a binding documentation for the TI TSC2046 touchscreen controllers ADC functionality. Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20210428073208.19570-3-o.rempel@pengutronix.de Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/iio/adc/ti,tsc2046.yaml115
1 files changed, 115 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/iio/adc/ti,tsc2046.yaml b/Documentation/devicetree/bindings/iio/adc/ti,tsc2046.yaml
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index 000000000000..601d69971d84
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+++ b/Documentation/devicetree/bindings/iio/adc/ti,tsc2046.yaml
@@ -0,0 +1,115 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/ti,tsc2046.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments TSC2046 touch screen controller.
+
+maintainers:
+ - Oleksij Rempel <o.rempel@pengutronix.de>
+
+description: |
+ TSC2046 is a touch screen controller with 8 channels ADC.
+
+properties:
+ compatible:
+ enum:
+ - ti,tsc2046e-adc
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ spi-max-frequency: true
+
+ "#io-channel-cells":
+ const: 1
+
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
+required:
+ - compatible
+ - reg
+
+patternProperties:
+ "^channel@[0-7]$":
+ $ref: "adc.yaml"
+ type: object
+
+ properties:
+ reg:
+ description: |
+ The channel number. It can have up to 8 channels
+ items:
+ minimum: 0
+ maximum: 7
+
+ settling-time-us: true
+ oversampling-ratio: true
+
+ required:
+ - reg
+
+ additionalProperties: false
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ adc@0 {
+ compatible = "ti,tsc2046e-adc";
+ reg = <0>;
+ spi-max-frequency = <1000000>;
+ interrupts-extended = <&gpio3 20 IRQ_TYPE_LEVEL_LOW>;
+ #io-channel-cells = <1>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ channel@0 {
+ reg = <0>;
+ };
+ channel@1 {
+ reg = <1>;
+ settling-time-us = <700>;
+ oversampling-ratio = <5>;
+ };
+ channel@2 {
+ reg = <2>;
+ };
+ channel@3 {
+ reg = <3>;
+ settling-time-us = <700>;
+ oversampling-ratio = <5>;
+ };
+ channel@4 {
+ reg = <4>;
+ settling-time-us = <700>;
+ oversampling-ratio = <5>;
+ };
+ channel@5 {
+ reg = <5>;
+ settling-time-us = <700>;
+ oversampling-ratio = <5>;
+ };
+ channel@6 {
+ reg = <6>;
+ };
+ channel@7 {
+ reg = <7>;
+ };
+ };
+ };
+...