| Message ID | 20190811173621.20454-1-slongerbeam@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | media: docs-rst: Clarify duration of LP-11 mode | expand |
Hi Steve, On 11/08/2019 18:36, Steve Longerbeam wrote: > Add a sentence that makes it more clear when the CSI-2 transmitter > must, if possible, exit LP-11 mode. That is, maintain LP-11 mode > until stream on, at which point the transmitter activates the clock > lane and transition to HS mode. > > Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com> > --- > Documentation/media/kapi/csi2.rst | 10 +++++++--- > 1 file changed, 7 insertions(+), 3 deletions(-) > > diff --git a/Documentation/media/kapi/csi2.rst b/Documentation/media/kapi/csi2.rst > index a7e75e2eba85..6cd1d4b0df17 100644 > --- a/Documentation/media/kapi/csi2.rst > +++ b/Documentation/media/kapi/csi2.rst > @@ -49,9 +49,13 @@ where > > The transmitter drivers must, if possible, configure the CSI-2 > transmitter to *LP-11 mode* whenever the transmitter is powered on but > -not active. Some transmitters do this automatically but some have to > -be explicitly programmed to do so, and some are unable to do so > -altogether due to hardware constraints. > +not active, and maintain *LP-11 mode* until stream on. Only until s/until/at/ perhaps? Regards, Ian > +stream on should the transmitter activate the clock on the clock lane > +and transition to *HS mode*. > + > +Some transmitters do this automatically but some have to be explicitly > +programmed to do so, and some are unable to do so altogether due to > +hardware constraints. > > Stopping the transmitter > ^^^^^^^^^^^^^^^^^^^^^^^^ >
Hi Ian, On 8/12/19 1:53 AM, Ian Arkver wrote: > Hi Steve, > > On 11/08/2019 18:36, Steve Longerbeam wrote: >> Add a sentence that makes it more clear when the CSI-2 transmitter >> must, if possible, exit LP-11 mode. That is, maintain LP-11 mode >> until stream on, at which point the transmitter activates the clock >> lane and transition to HS mode. >> >> Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com> >> --- >> Documentation/media/kapi/csi2.rst | 10 +++++++--- >> 1 file changed, 7 insertions(+), 3 deletions(-) >> >> diff --git a/Documentation/media/kapi/csi2.rst >> b/Documentation/media/kapi/csi2.rst >> index a7e75e2eba85..6cd1d4b0df17 100644 >> --- a/Documentation/media/kapi/csi2.rst >> +++ b/Documentation/media/kapi/csi2.rst >> @@ -49,9 +49,13 @@ where >> The transmitter drivers must, if possible, configure the CSI-2 >> transmitter to *LP-11 mode* whenever the transmitter is powered on but >> -not active. Some transmitters do this automatically but some have to >> -be explicitly programmed to do so, and some are unable to do so >> -altogether due to hardware constraints. >> +not active, and maintain *LP-11 mode* until stream on. Only until > > s/until/at/ perhaps? Sure, that's a bit better language. Steve > > Regards, > Ian >> +stream on should the transmitter activate the clock on the clock lane >> +and transition to *HS mode*. >> + >> +Some transmitters do this automatically but some have to be explicitly >> +programmed to do so, and some are unable to do so altogether due to >> +hardware constraints. >> Stopping the transmitter >> ^^^^^^^^^^^^^^^^^^^^^^^^ >>
diff --git a/Documentation/media/kapi/csi2.rst b/Documentation/media/kapi/csi2.rst index a7e75e2eba85..6cd1d4b0df17 100644 --- a/Documentation/media/kapi/csi2.rst +++ b/Documentation/media/kapi/csi2.rst @@ -49,9 +49,13 @@ where The transmitter drivers must, if possible, configure the CSI-2 transmitter to *LP-11 mode* whenever the transmitter is powered on but -not active. Some transmitters do this automatically but some have to -be explicitly programmed to do so, and some are unable to do so -altogether due to hardware constraints. +not active, and maintain *LP-11 mode* until stream on. Only until +stream on should the transmitter activate the clock on the clock lane +and transition to *HS mode*. + +Some transmitters do this automatically but some have to be explicitly +programmed to do so, and some are unable to do so altogether due to +hardware constraints. Stopping the transmitter ^^^^^^^^^^^^^^^^^^^^^^^^
Add a sentence that makes it more clear when the CSI-2 transmitter must, if possible, exit LP-11 mode. That is, maintain LP-11 mode until stream on, at which point the transmitter activates the clock lane and transition to HS mode. Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com> --- Documentation/media/kapi/csi2.rst | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-)