| Message ID | 20250305101453.708270-2-mathis.foerst@mt.com |
|---|---|
| State | New |
| Headers | show |
| Series | [v3,1/6] media: dt-bindings: mt9m114: Add onnn,slew-rate DT-binding | expand |
Hi Rob, thank you for your input. On Wed, Mar 05, 2025 at 07:08:21AM -0600, Rob Herring wrote: > On Wed, Mar 05, 2025 at 11:14:48AM +0100, Mathis Foerst wrote: > > The MT9M114 supports the different slew rates (0 to 7) on the output pads. > > At the moment, this is hardcoded to 7 (the fastest rate). > > The user might want to change this values due to EMC requirements. > > > > Add the 'onnn,slew-rate' property to the MT9M114 DT-bindings for selecting > > the desired slew rate. > > > > Signed-off-by: Mathis Foerst <mathis.foerst@mt.com> > > --- > > .../devicetree/bindings/media/i2c/onnn,mt9m114.yaml | 9 +++++++++ > > 1 file changed, 9 insertions(+) > > > > diff --git a/Documentation/devicetree/bindings/media/i2c/onnn,mt9m114.yaml b/Documentation/devicetree/bindings/media/i2c/onnn,mt9m114.yaml > > index f6b87892068a..c184bc04b743 100644 > > --- a/Documentation/devicetree/bindings/media/i2c/onnn,mt9m114.yaml > > +++ b/Documentation/devicetree/bindings/media/i2c/onnn,mt9m114.yaml > > @@ -70,6 +70,15 @@ properties: > > - bus-type > > - link-frequencies > > > > + onnn,slew-rate: > > Just 'slew-rate' which is already defined in the pinctrl binding. Okay, I fixed this in v4. > > > + $ref: /schemas/types.yaml#/definitions/uint32 > > + description: > > + Slew rate ot the output pads DOUT[7:0], LINE_VALID, FRAME_VALID and > > + PIXCLK. Higher values imply steeper voltage-flanks on the pads. > > + minimum: 0 > > + maximum: 7 > > + default: 7 > > + > > required: > > - compatible > > - reg > > -- > > 2.34.1 > > Best regards, Mathis Foerst
diff --git a/Documentation/devicetree/bindings/media/i2c/onnn,mt9m114.yaml b/Documentation/devicetree/bindings/media/i2c/onnn,mt9m114.yaml index f6b87892068a..c184bc04b743 100644 --- a/Documentation/devicetree/bindings/media/i2c/onnn,mt9m114.yaml +++ b/Documentation/devicetree/bindings/media/i2c/onnn,mt9m114.yaml @@ -70,6 +70,15 @@ properties: - bus-type - link-frequencies + onnn,slew-rate: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + Slew rate ot the output pads DOUT[7:0], LINE_VALID, FRAME_VALID and + PIXCLK. Higher values imply steeper voltage-flanks on the pads. + minimum: 0 + maximum: 7 + default: 7 + required: - compatible - reg
The MT9M114 supports the different slew rates (0 to 7) on the output pads. At the moment, this is hardcoded to 7 (the fastest rate). The user might want to change this values due to EMC requirements. Add the 'onnn,slew-rate' property to the MT9M114 DT-bindings for selecting the desired slew rate. Signed-off-by: Mathis Foerst <mathis.foerst@mt.com> --- .../devicetree/bindings/media/i2c/onnn,mt9m114.yaml | 9 +++++++++ 1 file changed, 9 insertions(+)