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   mriesch: any ideas what should be passed to phy_mipi_dphy_get_default_config once more than one virtual channel is transported over the link?
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   mriesch: or, actually, what is the preferred approach to configure a mipi dphy?
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   mriesch: may one rely on V4L2_CID_LINK_FREQ instead of V4L2_PIXEL_RATE and bits per pixel?
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   kbingham: mriesch, Yes, I think when LINK_FREQ is available it's preferred, there's a helper function to handle this in v4l2 too
   <br> And also I think I saw a series changing it so we can convey the link over the mbus configuration and stop it being a control
   <br> https://lore.kernel.org/all/20250120110157.152732-1-sakari.ailus@linux.intel.com/
   mriesch: <u>kbingham</u>: cool, thanks for the pointer
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   mriesch: ftr, i think https://elixir.bootlin.com/linux/v6.14-rc2/source/drivers/media/platform/raspberrypi/rp1-cfe/cfe.c#L1103 answers my first question pretty well
   kbingham: aha I see indeed.
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   kbingham: a bit tedious, maybe v4l2_get_link_freq() needs to be taught to check the state or also wrap some of that ...
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   mriesch: ...or simply set bpp to zero and demand that the source implements LINK_FREQ :-)
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   mriesch: for csi-2 the link frequency equals the lane rate, right?
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   mriesch: ok, frequency and rate are different, obviously :-)
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   pinchartl: <u>mriesch</u>: the method to retrieve the link frequency has changed and may still change over time. use the v4l2_get_link_freq() function to avoid future issues
   mriesch: <u>pinchartl</u>: ack
   pinchartl: by using v4l2_get_link_freq() you'll ensure that your driver will not be left to bit-rot when we make that API evolve
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