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The > > > > property is optional, and defaults to 1 as only one channel is currently > > > > supported by drivers. > > > > > > > > The only known SoC to have more than one channel is the i.MX8MP. As the > > > > binding examples do not cover that SoC, don't update them. > > > > > > > > Signed-off-by: Laurent Pinchart > > > > --- > > > > .../devicetree/bindings/media/nxp,imx-mipi-csi2.yaml | 7 +++++++ > > > > 1 file changed, 7 insertions(+) > > > > > > > > diff --git a/Documentation/devicetree/bindings/media/nxp,imx-mipi-csi2.yaml b/Documentation/devicetree/bindings/media/nxp,imx-mipi-csi2.yaml > > > > index db4889bf881e..41ad5b84eaeb 100644 > > > > --- a/Documentation/devicetree/bindings/media/nxp,imx-mipi-csi2.yaml > > > > +++ b/Documentation/devicetree/bindings/media/nxp,imx-mipi-csi2.yaml > > > > @@ -68,6 +68,13 @@ properties: > > > > default: 166000000 > > > > deprecated: true > > > > > > > > + fsl,num-channels: > > > > + $ref: /schemas/types.yaml#/definitions/uint32 > > > > + description: Number of output channels > > > > + minimum: 1 > > > > + maximum: 4 > > > > + default: 1 > > > > + > > > > > > Look like it is fixed value for each compabiable string, So it is not > > > suitable for adding new property. It should be in driver data of each > > > compatible strings. > > > > > > I met similar case before. DT team generally don't agree on add such > > > property, unless there are two instances in the same chip, which have > > > difference channel number. > > > > If the DT changes are rejected, can the number of channels be added to > > the data structure inside mipi_csis_of_match? We have compatibles for > > 8mm and imx7. If we add an imx8mp compatible we could add a reference > > to the number of channels. > > I thought about it, and decided to add a new property because the number > of channels is really a synthesis time configuration parameter, and > could differ between different CSIS instances in the same SoC. Need add such information at binding doc's commit message, ideally provide an example for it. Frank > > > > > ports: > > > > $ref: /schemas/graph.yaml#/properties/ports > > > > > > -- > Regards, > > Laurent Pinchart