Re: [PATCH v2 3/7] dt-bindings: display: mxsfb: Add a bus-width endpoint property

On 10/7/20 3:24 AM, Laurent Pinchart wrote:

[...]

•      bus-width:
  

•        enum: [16, 18, 24]
  

•        description: |
  

•          The output bus width. This value overrides the configuration
  

•          derived from the connected device (encoder or panel). It should
  

•          only be specified when PCB routing of the data signals require a
  

•          different bus width on the LCDIF and the connected device. For
  

•          instance, when a 18-bit RGB panel has its R[5:0], G[5:0] and
  

•          B[5:0] signals connected to LCD_DATA[7:2], LCD_DATA[15:10] and
  

•          LCD_DATA[23:18] instead of LCD_DATA[5:0], LCD_DATA[11:6] and
  

•          LCD_DATA[17:12], bus-width should be set to 24.
  

The iMX6 IPUv3 uses interface-pix-fmt which is a bit more flexible, but I'm not sure whether it's the right way to go about this, see: Documentation/devicetree/bindings/display/imx/fsl-imx-drm.txt