| Message ID | 20160901112320.15246-2-peter.ujfalusi@ti.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Thu, Sep 01, 2016 at 02:22:55PM +0300, Peter Ujfalusi wrote: > There are display panels which demands that the sync signal is driven on > different edge than the pixel data. > With the syncclk-active property we can specify the clk edge to be used to > drive the sync signal. When the property is missing it indicates that the > sync is driven on the same edge as the pixel data. > > Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> > CC: Rob Herring <robh+dt@kernel.org> > CC: Mark Rutland <mark.rutland@arm.com> > CC: devicetree@vger.kernel.org > --- > Documentation/devicetree/bindings/display/panel/display-timing.txt | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/Documentation/devicetree/bindings/display/panel/display-timing.txt b/Documentation/devicetree/bindings/display/panel/display-timing.txt > index e1d4a0b59612..1436292e7a56 100644 > --- a/Documentation/devicetree/bindings/display/panel/display-timing.txt > +++ b/Documentation/devicetree/bindings/display/panel/display-timing.txt > @@ -32,6 +32,12 @@ optional properties: > - active low = drive pixel data on falling edge/ > sample data on rising edge > - ignored = ignored > + - syncclk-active: with > + - active high = drive sync on rising edge/ rising edge of what? pixel clk? > + sample sync on falling edge > + - active low = drive sync on falling edge/ > + sample sync on rising edge > + - omitted = same configuration as pixelclk-active > - interlaced (bool): boolean to enable interlaced mode > - doublescan (bool): boolean to enable doublescan mode > - doubleclk (bool): boolean to enable doubleclock mode > -- > 2.9.3 >
On 09/12/16 16:05, Rob Herring wrote: > On Thu, Sep 01, 2016 at 02:22:55PM +0300, Peter Ujfalusi wrote: >> There are display panels which demands that the sync signal is driven on >> different edge than the pixel data. >> With the syncclk-active property we can specify the clk edge to be used to >> drive the sync signal. When the property is missing it indicates that the >> sync is driven on the same edge as the pixel data. >> >> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> >> CC: Rob Herring <robh+dt@kernel.org> >> CC: Mark Rutland <mark.rutland@arm.com> >> CC: devicetree@vger.kernel.org >> --- >> Documentation/devicetree/bindings/display/panel/display-timing.txt | 6 ++++++ >> 1 file changed, 6 insertions(+) >> >> diff --git a/Documentation/devicetree/bindings/display/panel/display-timing.txt b/Documentation/devicetree/bindings/display/panel/display-timing.txt >> index e1d4a0b59612..1436292e7a56 100644 >> --- a/Documentation/devicetree/bindings/display/panel/display-timing.txt >> +++ b/Documentation/devicetree/bindings/display/panel/display-timing.txt >> @@ -32,6 +32,12 @@ optional properties: >> - active low = drive pixel data on falling edge/ >> sample data on rising edge >> - ignored = ignored >> + - syncclk-active: with >> + - active high = drive sync on rising edge/ > > rising edge of what? pixel clk? Yes, pixel clk, I have copied and modified the 'pixelclk-active' option. Probably it would be better to state it explicitly. > >> + sample sync on falling edge >> + - active low = drive sync on falling edge/ >> + sample sync on rising edge >> + - omitted = same configuration as pixelclk-active >> - interlaced (bool): boolean to enable interlaced mode >> - doublescan (bool): boolean to enable doublescan mode >> - doubleclk (bool): boolean to enable doubleclock mode >> -- >> 2.9.3 >>
diff --git a/Documentation/devicetree/bindings/display/panel/display-timing.txt b/Documentation/devicetree/bindings/display/panel/display-timing.txt index e1d4a0b59612..1436292e7a56 100644 --- a/Documentation/devicetree/bindings/display/panel/display-timing.txt +++ b/Documentation/devicetree/bindings/display/panel/display-timing.txt @@ -32,6 +32,12 @@ optional properties: - active low = drive pixel data on falling edge/ sample data on rising edge - ignored = ignored + - syncclk-active: with + - active high = drive sync on rising edge/ + sample sync on falling edge + - active low = drive sync on falling edge/ + sample sync on rising edge + - omitted = same configuration as pixelclk-active - interlaced (bool): boolean to enable interlaced mode - doublescan (bool): boolean to enable doublescan mode - doubleclk (bool): boolean to enable doubleclock mode
There are display panels which demands that the sync signal is driven on different edge than the pixel data. With the syncclk-active property we can specify the clk edge to be used to drive the sync signal. When the property is missing it indicates that the sync is driven on the same edge as the pixel data. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> CC: Rob Herring <robh+dt@kernel.org> CC: Mark Rutland <mark.rutland@arm.com> CC: devicetree@vger.kernel.org --- Documentation/devicetree/bindings/display/panel/display-timing.txt | 6 ++++++ 1 file changed, 6 insertions(+)