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| author | Sakari Ailus <sakari.ailus@linux.intel.com> | 2020-12-11 23:15:04 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2021-01-12 17:04:05 +0100 |
| commit | 44c1febd7e6018b279d83e2c9725333be6b00f83 (patch) | |
| tree | 224f65f28ee50de7f4a462e41f3148931770e435 /Documentation/driver-api/media | |
| parent | 38c22308181562d52926b6701327c3fe209f6d84 (diff) | |
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: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'Documentation/driver-api/media')
| -rw-r--r-- | Documentation/driver-api/media/csi2.rst | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/Documentation/driver-api/media/csi2.rst b/Documentation/driver-api/media/csi2.rst index e3bbc6baf0f0..11c52b0be8b8 100644 --- a/Documentation/driver-api/media/csi2.rst +++ b/Documentation/driver-api/media/csi2.rst @@ -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 |