From: Marek Vasut Date: Tue, 21 Feb 2023 20:04:07 +0000 (+0100) Subject: dt-bindings: display: Start the info graphics with HS/VS change X-Git-Tag: microblaze-v6.6~31^2~21^2~192 X-Git-Url: http://git.monstr.eu/?a=commitdiff_plain;h=3e66f493e136e615ada3c0dc691119679b1df837;p=linux-2.6-microblaze.git 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 Reviewed-by: Sam Ravnborg Acked-by: Rob Herring 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 0d317e61edd8..aea69b84ca5d 100644 --- 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.