Commit 44c1febd authored by Sakari Ailus's avatar Sakari Ailus Committed by Mauro Carvalho Chehab
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media: Documentation: media: Update pixel rate formula for C-PHY 



Update the formula to calculate the pixel rate on the link for C-PHY.

Signed-off-by: default avatarSakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+huawei@kernel.org>
parent 38c22308

Documentation/driver-api/media/csi2.rst

+3 −1
Original line number Diff line number Diff line
@@ -35,7 +35,7 @@ ability to start and stop the stream. 


The value of the V4L2_CID_PIXEL_RATE is calculated as follows::



	pixel_rate = link_freq * 2 * nr_of_lanes / bits_per_sample

	pixel_rate = link_freq * 2 * nr_of_lanes * 16 / k / bits_per_sample



where
@@ -53,6 +53,8 @@ where 
     - Two bits are transferred per clock cycle per lane.

   * - bits_per_sample

     - Number of bits per sample.

   * - k

     - 16 for D-PHY and 7 for C-PHY



The transmitter drivers must, if possible, configure the CSI-2

transmitter to *LP-11 mode* whenever the transmitter is powered on but