Convert binding doc ads7846.txt to yaml format.
Additional change:
- add ref to touchscreen.yaml and spi-peripheral-props.yaml.
- use common node name touchscreen.
Fix below warning: arch/arm64/boot/dts/freescale/imx8mm-var-som-symphony.dtb: touchscreen@0:
ti,x-min: b'\x00}' is not of type 'object', 'array', 'boolean', 'null'
Signed-off-by: Frank Li <Frank.Li@xxxxxxx>
---
There are warning:
Documentation/devicetree/bindings/input/touchscreen/ti,ads7843.yaml: properties:ti,x-plate-ohms: '$ref' should not be valid under {'const': '$ref'}
hint: Standard unit suffix properties don't need a type $ref
I don't know how to fix it. ti,x-plate-ohms is 16bit, but default it is
uint32
---
.../bindings/input/touchscreen/ads7846.txt | 107 -----------
.../input/touchscreen/ti,ads7843.yaml | 170 ++++++++++++++++++
2 files changed, 170 insertions(+), 107 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/input/touchscreen/ads7846.txt
create mode 100644 Documentation/devicetree/bindings/input/touchscreen/ti,ads7843.yaml
diff --git a/Documentation/devicetree/bindings/input/touchscreen/ads7846.txt b/Documentation/devicetree/bindings/input/touchscreen/ads7846.txt
deleted file mode 100644
index 399c87782935c..0000000000000
--- a/Documentation/devicetree/bindings/input/touchscreen/ads7846.txt
+++ /dev/null
@@ -1,107 +0,0 @@
-Device tree bindings for TI's ADS7843, ADS7845, ADS7846, ADS7873, TSC2046
-SPI driven touch screen controllers.
-
-The node for this driver must be a child node of a SPI controller, hence
-all mandatory properties described in
-
- Documentation/devicetree/bindings/spi/spi-bus.txt
-
-must be specified.
-
-Additional required properties:
-
- compatible Must be one of the following, depending on the
- model:
- "ti,tsc2046"
- "ti,ads7843"
- "ti,ads7845"
- "ti,ads7846"
- "ti,ads7873"
-
- interrupts An interrupt node describing the IRQ line the chip's
- !PENIRQ pin is connected to.
- vcc-supply A regulator node for the supply voltage.
-
-
-Optional properties:
-
- ti,vref-delay-usecs vref supply delay in usecs, 0 for
- external vref (u16).
- ti,vref-mv The VREF voltage, in millivolts (u16).
- Set to 0 to use internal references
- (ADS7846).
- ti,keep-vref-on set to keep vref on for differential
- measurements as well
- ti,settle-delay-usec Settling time of the analog signals;
- a function of Vcc and the capacitance
- on the X/Y drivers. If set to non-zero,
- two samples are taken with settle_delay
- us apart, and the second one is used.
- ~150 uSec with 0.01uF caps (u16).
- ti,penirq-recheck-delay-usecs If set to non-zero, after samples are
- taken this delay is applied and penirq
- is rechecked, to help avoid false
- events. This value is affected by the
- material used to build the touch layer
- (u16).
- ti,x-plate-ohms Resistance of the X-plate,
- in Ohms (u16).
- ti,y-plate-ohms Resistance of the Y-plate,
- in Ohms (u16).
- ti,x-min Minimum value on the X axis (u16).
- ti,y-min Minimum value on the Y axis (u16).
- ti,debounce-tol Tolerance used for filtering (u16).
- ti,debounce-rep Additional consecutive good readings
- required after the first two (u16).
- ti,pendown-gpio-debounce Platform specific debounce time for the
- pendown-gpio (u32).
- pendown-gpio GPIO handle describing the pin the !PENIRQ
- line is connected to.
- ti,hsync-gpios GPIO line to poll for hsync
- wakeup-source use any event on touchscreen as wakeup event.
- (Legacy property support: "linux,wakeup")
- touchscreen-size-x General touchscreen binding, see [1].
- touchscreen-size-y General touchscreen binding, see [1].
- touchscreen-max-pressure General touchscreen binding, see [1].
- touchscreen-min-pressure General touchscreen binding, see [1].
- touchscreen-average-samples General touchscreen binding, see [1].
- touchscreen-inverted-x General touchscreen binding, see [1].
- touchscreen-inverted-y General touchscreen binding, see [1].
- touchscreen-swapped-x-y General touchscreen binding, see [1].
-
-[1] All general touchscreen properties are described in
- Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt.
-
-Deprecated properties:
-
- ti,swap-xy swap x and y axis
- ti,x-max Maximum value on the X axis (u16).
- ti,y-max Maximum value on the Y axis (u16).
- ti,pressure-min Minimum reported pressure value
- (threshold) - u16.
- ti,pressure-max Maximum reported pressure value (u16).
- ti,debounce-max Max number of additional readings per
- sample (u16).
-
-Example for a TSC2046 chip connected to an McSPI controller of an OMAP SoC::
-
- spi_controller {
- tsc2046@0 {
- reg = <0>; /* CS0 */
- compatible = "ti,tsc2046";
- interrupt-parent = <&gpio1>;
- interrupts = <8 0>; /* BOOT6 / GPIO 8 */
- spi-max-frequency = <1000000>;
- pendown-gpio = <&gpio1 8 0>;
- vcc-supply = <®_vcc3>;
-
- ti,x-min = /bits/ 16 <0>;
- ti,x-max = /bits/ 16 <8000>;
- ti,y-min = /bits/ 16 <0>;
- ti,y-max = /bits/ 16 <4800>;
- ti,x-plate-ohms = /bits/ 16 <40>;
- ti,pressure-max = /bits/ 16 <255>;
-
- wakeup-source;
- };
- };
diff --git a/Documentation/devicetree/bindings/input/touchscreen/ti,ads7843.yaml b/Documentation/devicetree/bindings/input/touchscreen/ti,ads7843.yaml
new file mode 100644
index 0000000000000..b8239491c747a
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/touchscreen/ti,ads7843.yaml
@@ -0,0 +1,170 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/touchscreen/ti,ads7843.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TI's SPI driven touch screen controllers.
+
+maintainers:
+ - Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
+ - Marek Vasut <marex@xxxxxxx>
+ - Alexander Stein <alexander.stein@xxxxxxxxxxxxxxx>
+
+description:
+ Device tree bindings for TI's ADS7843, ADS7845, ADS7846, ADS7873, TSC2046
+ SPI driven touch screen controllers.
+
+ The node for this driver must be a child node of a SPI controller, hence
+ all mandatory properties described in
+
+properties:
+ compatible:
+ enum:
+ - ti,tsc2046
+ - ti,ads7843
+ - ti,ads7845
+ - ti,ads7846
+ - ti,ads7873
+
+ interrupts:
+ maxItems: 1
+
+ vcc-supply:
+ description: A regulator node for the supply voltage.
+
+ ti,vref-delay-usecs:
+ $ref: /schemas/types.yaml#/definitions/uint16
+ description: vref supply delay in usecs, 0 for external vref (u16).
+
+ ti,vref-mv:
+ $ref: /schemas/types.yaml#/definitions/uint16
+ description:
+ The VREF voltage, in millivolts (u16).
+ Set to 0 to use internal references (ADS7846).
+
+ ti,keep-vref-on:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description: set to keep vref on for differential measurements as well.
+
+ ti,settle-delay-usec:
+ $ref: /schemas/types.yaml#/definitions/uint16
+ description:
+ Settling time of the analog signals; a function of Vcc and the
+ capacitance on the X/Y drivers. If set to non-zero, two samples are
+ taken with settle_delay us apart, and the second one is used. ~150
+ uSec with 0.01uF caps (u16).
+
+ ti,penirq-recheck-delay-usecs:
+ $ref: /schemas/types.yaml#/definitions/uint16
+ description:
+ If set to non-zero, after samples are taken this delay is applied and
+ penirq is rechecked, to help avoid false events. This value is
+ affected by the material used to build the touch layer (u16).
+
+ ti,x-plate-ohms:
+ $ref: /schemas/types.yaml#/definitions/uint16
+ description: Resistance of the X-plate, in Ohms (u16).
+
+ ti,y-plate-ohms:
+ $ref: /schemas/types.yaml#/definitions/uint16
+ description: Resistance of the Y-plate, in Ohms (u16).
+
+ ti,x-min:
+ $ref: /schemas/types.yaml#/definitions/uint16
+ description: Minimum value on the X axis (u16).
+
+ ti,y-min:
+ $ref: /schemas/types.yaml#/definitions/uint16
+ description: Minimum value on the Y axis (u16).
+
+ ti,debounce-tol:
+ $ref: /schemas/types.yaml#/definitions/uint16
+ description: Tolerance used for filtering (u16).
+
+ ti,debounce-rep:
+ $ref: /schemas/types.yaml#/definitions/uint16
+ description:
+ Additional consecutive good readings required after the first two (u16).
+
+ ti,pendown-gpio-debounce:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: Platform specific debounce time for the pendown-gpio (u32).
+
+ pendown-gpio:
+ description:
+ GPIO handle describing the pin the !PENIRQ line is connected to.
+
+ ti,hsync-gpios:
+ description:
+ GPIO line to poll for hsync
+
+ wakeup-source: true
+
+ ti,swap-xy:
+ deprecated: true
+ $ref: /schemas/types.yaml#/definitions/flag
+ description: swap x and y axis
+
+ ti,x-max:
+ deprecated: true
+ $ref: /schemas/types.yaml#/definitions/uint16
+ description: Maximum value on the X axis (u16).
+
+ ti,y-max:
+ deprecated: true
+ $ref: /schemas/types.yaml#/definitions/uint16
+ description: Maximum value on the Y axis (u16).
+
+ ti,pressure-min:
+ deprecated: true
+ $ref: /schemas/types.yaml#/definitions/uint16
+ description: Minimum reported pressure value (threshold) - u16.
+
+ ti,pressure-max:
+ deprecated: true
+ $ref: /schemas/types.yaml#/definitions/uint16
+ description: Maximum reported pressure value (u16).
+
+ ti,debounce-max:
+ deprecated: true
+ $ref: /schemas/types.yaml#/definitions/uint16
+ description: Max number of additional readings per sample (u16).
+
+required:
+ - compatible
+ - reg
+ - vcc-supply
+
+allOf:
+ - $ref: touchscreen.yaml#
+ - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ spi{
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ touchscreen@0 {
+ compatible = "ti,tsc2046";
+ reg = <0>; /* CS0 */
+ interrupt-parent = <&gpio1>;
+ interrupts = <8 0>; /* BOOT6 / GPIO 8 */
+ spi-max-frequency = <1000000>;
+ pendown-gpio = <&gpio1 8 0>;
+ vcc-supply = <®_vcc3>;
+
+ ti,x-min = /bits/ 16 <0>;
+ ti,x-max = /bits/ 16 <8000>;
+ ti,y-min = /bits/ 16 <0>;
+ ti,y-max = /bits/ 16 <4800>;
+ ti,x-plate-ohms = /bits/ 16 <40>;
+ ti,pressure-max = /bits/ 16 <255>;
+
+ wakeup-source;
+ };
+ };
+
--
2.34.1
