| Message ID | 20250910135916.3939502-3-dario.binacchi@amarulasolutions.com |
|---|---|
| State | New |
| Headers | show |
| Series |
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| Related | show |
On Wed, Sep 10, 2025 at 03:58:36PM +0200, Dario Binacchi wrote: > Add support for glitch threshold configuration. A detected signal is valid > only if it lasts longer than the set threshold; otherwise, it is regarded > as a glitch. > > Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com> > --- > > .../input/touchscreen/fsl,imx6ul-tsc.yaml | 18 ++++++++++++++++++ > 1 file changed, 18 insertions(+) > > diff --git a/Documentation/devicetree/bindings/input/touchscreen/fsl,imx6ul-tsc.yaml b/Documentation/devicetree/bindings/input/touchscreen/fsl,imx6ul-tsc.yaml > index 678756ad0f92..2fee2940213f 100644 > --- a/Documentation/devicetree/bindings/input/touchscreen/fsl,imx6ul-tsc.yaml > +++ b/Documentation/devicetree/bindings/input/touchscreen/fsl,imx6ul-tsc.yaml > @@ -62,6 +62,23 @@ properties: > description: Number of data samples which are averaged for each read. > enum: [ 1, 4, 8, 16, 32 ] > > + fsl,glitch-threshold: > + $ref: /schemas/types.yaml#/definitions/uint32 > + default: 0 > + enum: [ 0, 1, 2, 3 ] > + description: | > + Indicates the glitch threshold. The threshold is defined by number > + of clock cycles. A detect signal is only valid if it is exist longer > + than threshold; otherwise, it is regarded as a glitch. > + 0: Normal function: 8191 clock cycles > + Low power mode: 9 clock cycles > + 1: Normal function: 4095 clock cycles > + Low power mode: 7 clock cycles > + 2: Normal function: 2047 clock cycles > + Low power mode: 5 clock cycles > + 3: Normal function: 1023 clock cycles > + Low power mode: 3 clock cycles > + does any property in input/touchscreen/touchscreen.yaml use as it? Suppose all touch screen have similar property to filiter out glitch. Frank > required: > - compatible > - reg > @@ -94,4 +111,5 @@ examples: > measure-delay-time = <0xfff>; > pre-charge-time = <0xffff>; > touchscreen-average-samples = <32>; > + fsl,glitch-threshold = <2>; > }; > -- > 2.43.0 > To unsubscribe from this group and stop receiving emails from it, send an email to linux-amarula+unsubscribe@amarulasolutions.com.
diff --git a/Documentation/devicetree/bindings/input/touchscreen/fsl,imx6ul-tsc.yaml b/Documentation/devicetree/bindings/input/touchscreen/fsl,imx6ul-tsc.yaml index 678756ad0f92..2fee2940213f 100644 --- a/Documentation/devicetree/bindings/input/touchscreen/fsl,imx6ul-tsc.yaml +++ b/Documentation/devicetree/bindings/input/touchscreen/fsl,imx6ul-tsc.yaml @@ -62,6 +62,23 @@ properties: description: Number of data samples which are averaged for each read. enum: [ 1, 4, 8, 16, 32 ] + fsl,glitch-threshold: + $ref: /schemas/types.yaml#/definitions/uint32 + default: 0 + enum: [ 0, 1, 2, 3 ] + description: | + Indicates the glitch threshold. The threshold is defined by number + of clock cycles. A detect signal is only valid if it is exist longer + than threshold; otherwise, it is regarded as a glitch. + 0: Normal function: 8191 clock cycles + Low power mode: 9 clock cycles + 1: Normal function: 4095 clock cycles + Low power mode: 7 clock cycles + 2: Normal function: 2047 clock cycles + Low power mode: 5 clock cycles + 3: Normal function: 1023 clock cycles + Low power mode: 3 clock cycles + required: - compatible - reg @@ -94,4 +111,5 @@ examples: measure-delay-time = <0xfff>; pre-charge-time = <0xffff>; touchscreen-average-samples = <32>; + fsl,glitch-threshold = <2>; };
Add support for glitch threshold configuration. A detected signal is valid only if it lasts longer than the set threshold; otherwise, it is regarded as a glitch. Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com> --- .../input/touchscreen/fsl,imx6ul-tsc.yaml | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)