diff options
Diffstat (limited to 'dts/Bindings/input/microchip,cap11xx.yaml')
| -rw-r--r-- | dts/Bindings/input/microchip,cap11xx.yaml | 91 |
1 files changed, 84 insertions, 7 deletions
diff --git a/dts/Bindings/input/microchip,cap11xx.yaml b/dts/Bindings/input/microchip,cap11xx.yaml index d5d6bced31..7ade03f1b3 100644 --- a/dts/Bindings/input/microchip,cap11xx.yaml +++ b/dts/Bindings/input/microchip,cap11xx.yaml @@ -1,10 +1,10 @@ # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) %YAML 1.2 --- -$id: "http://devicetree.org/schemas/input/microchip,cap11xx.yaml#" -$schema: "http://devicetree.org/meta-schemas/core.yaml#" +$id: http://devicetree.org/schemas/input/microchip,cap11xx.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# -title: Device tree bindings for Microchip CAP11xx based capacitive touch sensors +title: Microchip CAP11xx based capacitive touch sensors description: | The Microchip CAP1xxx Family of RightTouchTM multiple-channel capacitive @@ -19,7 +19,10 @@ properties: - microchip,cap1106 - microchip,cap1126 - microchip,cap1188 + - microchip,cap1203 - microchip,cap1206 + - microchip,cap1293 + - microchip,cap1298 reg: maxItems: 1 @@ -42,13 +45,13 @@ properties: Enables the Linux input system's autorepeat feature on the input device. linux,keycodes: - minItems: 6 - maxItems: 6 + minItems: 3 + maxItems: 8 description: | Specifies an array of numeric keycode values to be used for the channels. If this property is omitted, KEY_A, KEY_B, etc are used as defaults. - The array must have exactly six entries. + The number of entries must correspond to the number of channels. microchip,sensor-gain: $ref: /schemas/types.yaml#/definitions/uint32 @@ -67,6 +70,59 @@ properties: open drain. This property allows using the active high push-pull output. + microchip,sensitivity-delta-sense: + $ref: /schemas/types.yaml#/definitions/uint32 + default: 32 + enum: [1, 2, 4, 8, 16, 32, 64, 128] + description: + Controls the sensitivity multiplier of a touch detection. + Higher value means more sensitive settings. + At the more sensitive settings, touches are detected for a smaller delta + capacitance corresponding to a "lighter" touch. + + microchip,signal-guard: + $ref: /schemas/types.yaml#/definitions/uint32-array + minItems: 3 + maxItems: 8 + items: + enum: [0, 1] + description: | + 0 - off + 1 - on + The signal guard isolates the signal from virtual grounds. + If enabled then the behavior of the channel is changed to signal guard. + The number of entries must correspond to the number of channels. + + microchip,input-threshold: + $ref: /schemas/types.yaml#/definitions/uint32-array + minItems: 3 + maxItems: 8 + items: + minimum: 0 + maximum: 127 + description: + Specifies the delta threshold that is used to determine if a touch has + been detected. A higher value means a larger difference in capacitance + is required for a touch to be registered, making the touch sensor less + sensitive. + The number of entries must correspond to the number of channels. + + microchip,calib-sensitivity: + $ref: /schemas/types.yaml#/definitions/uint32-array + minItems: 3 + maxItems: 8 + items: + enum: [1, 2, 4] + description: | + Specifies an array of numeric values that controls the gain + used by the calibration routine to enable sensor inputs + to be more sensitive for proximity detection. + Gain is based on touch pad capacitance range + 1 - 5-50pF + 2 - 0-25pF + 4 - 0-12.5pF + The number of entries must correspond to the number of channels. + patternProperties: "^led@[0-7]$": type: object @@ -96,10 +152,29 @@ allOf: contains: enum: - microchip,cap1106 + - microchip,cap1203 + - microchip,cap1206 + - microchip,cap1293 + - microchip,cap1298 then: patternProperties: "^led@[0-7]$": false + - if: + properties: + compatible: + contains: + enum: + - microchip,cap1106 + - microchip,cap1126 + - microchip,cap1188 + - microchip,cap1203 + - microchip,cap1206 + then: + properties: + microchip,signal-guard: false + microchip,calib-sensitivity: false + required: - compatible - interrupts @@ -112,13 +187,15 @@ examples: #address-cells = <1>; #size-cells = <0>; - cap1188@28 { + touch@28 { compatible = "microchip,cap1188"; interrupt-parent = <&gpio1>; interrupts = <0 0>; reg = <0x28>; autorepeat; microchip,sensor-gain = <2>; + microchip,sensitivity-delta-sense = <16>; + microchip,input-threshold = <21>, <18>, <46>, <46>, <46>, <21>; linux,keycodes = <103>, /* KEY_UP */ <106>, /* KEY_RIGHT */ |