dt-bindings: display: Start the info graphics with HS/VS change

The VS signal change is synchronized to HS signal change, start the
info graphics with that event, instead of having that event occur in
the middle of it.

Scope trace of DPI bus with HS/VS active HIGH looks as follows:
         ________________...__
VS...___/__         __        \______...
HS...___/  \_______/  \__...__/  \___...
        ^                        ^
	|                        |
        |    Used to start here -'
	|
	'--- Start info graphics here

Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230221200407.16531-1-marex@denx.de

diff --git a/Documentation/devicetree/bindings/display/panel/panel-timing.yaml b/Documentation/devicetree/bindings/display/panel/panel-timing.yaml
index 0d317e61edd8f486e557d2d9bd55fcbad670771e..aea69b84ca5d8681ab95209a9eebc96949893833 100644 (file)
--- a/Documentation/devicetree/bindings/display/panel/panel-timing.yaml
+++ b/Documentation/devicetree/bindings/display/panel/panel-timing.yaml
@@ -17,29 +17,29 @@ description: |
 
   The parameters are defined as seen in the following illustration.
 
-  +----------+-------------------------------------+----------+-------+
-  |          |        ^                            |          |       |
-  |          |        |vback_porch                 |          |       |
-  |          |        v                            |          |       |
-  +----------#######################################----------+-------+
-  |          #        ^                            #          |       |
-  |          #        |                            #          |       |
-  |  hback   #        |                            #  hfront  | hsync |
-  |   porch  #        |       hactive              #  porch   |  len  |
-  |<-------->#<-------+--------------------------->#<-------->|<----->|
-  |          #        |                            #          |       |
-  |          #        |vactive                     #          |       |
-  |          #        |                            #          |       |
-  |          #        v                            #          |       |
-  +----------#######################################----------+-------+
-  |          |        ^                            |          |       |
-  |          |        |vfront_porch                |          |       |
-  |          |        v                            |          |       |
-  +----------+-------------------------------------+----------+-------+
-  |          |        ^                            |          |       |
-  |          |        |vsync_len                   |          |       |
-  |          |        v                            |          |       |
-  +----------+-------------------------------------+----------+-------+
+  +-------+----------+-------------------------------------+----------+
+  |       |          |        ^                            |          |
+  |       |          |        |vsync_len                   |          |
+  |       |          |        v                            |          |
+  +-------+----------+-------------------------------------+----------+
+  |       |          |        ^                            |          |
+  |       |          |        |vback_porch                 |          |
+  |       |          |        v                            |          |
+  +-------+----------#######################################----------+
+  |       |          #        ^                            #          |
+  |       |          #        |                            #          |
+  | hsync |  hback   #        |                            #  hfront  |
+  |  len  |   porch  #        |       hactive              #  porch   |
+  |<----->|<-------->#<-------+--------------------------->#<-------->|
+  |       |          #        |                            #          |
+  |       |          #        |vactive                     #          |
+  |       |          #        |                            #          |
+  |       |          #        v                            #          |
+  +-------+----------#######################################----------+
+  |       |          |        ^                            |          |
+  |       |          |        |vfront_porch                |          |
+  |       |          |        v                            |          |
+  +-------+----------+-------------------------------------+----------+
 
 
   The following is the panel timings shown with time on the x-axis.