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media: vidtv.rst: update it to better describe the frequencies 

The virtual driver has now a minimal set of frequencies for a
single transponder to be found by each DVB standard.

Document it, and update related information about the
simulated LNBf.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Mauro Carvalho Chehab 2020-09-15 09:18:32 +02:00
parent 9ec6f4bb60
commit 2cf846b1f3
1 changed files with 11 additions and 3 deletions
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14
Documentation/driver-api/media/drivers/vidtv.rst
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@ -62,6 +62,14 @@ When compiled as a module, run::
That's it! The bridge driver will initialize the tuner and demod drivers as
part of its own initialization.
By default, it will accept the following frequencies:
- 474 MHz for DVB-T/T2/C;
- 11,362 GHz for DVB-S/S2.
For satellite systems, the driver simulates an universal extended
LNBf, with frequencies at Ku-Band, ranging from 10.7 GHz to 12.75 GHz.
You can optionally define some command-line arguments to vidtv.
Command-line arguments to vidtv
@ -86,13 +94,13 @@ mock_tune_delay_msec
Simulate a tune delay. Default 0.
vidtv_valid_dvb_t_freqs
Valid DVB-T frequencies to simulate.
Valid DVB-T frequencies to simulate, in Hz.
vidtv_valid_dvb_c_freqs
Valid DVB-C frequencies to simulate.
Valid DVB-C frequencies to simulate, in Hz.
vidtv_valid_dvb_s_freqs
Valid DVB-C frequencies to simulate.
Valid DVB-S/S2 frequencies to simulate at Ku-Band, in kHz.
max_frequency_shift_hz,
Maximum shift in HZ allowed when tuning in a channel.