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Commit e8537b35 authored by Hans Verkuil's avatar Hans Verkuil Committed by Mauro Carvalho Chehab
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[media] dt-bindings: media/s5p-cec.txt: document needs-hpd property 



Needed for boards that wire the CEC pin in such a way that it
is unavailable when the HPD is low.

Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Acked-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@s-opensource.com>
parent 41c01d65

Documentation/devicetree/bindings/media/s5p-cec.txt

+6 −0
Original line number Original line Diff line number Diff line
@@ -17,6 +17,12 @@ Required properties: 
  - samsung,syscon-phandle - phandle to the PMU system controller

  - samsung,syscon-phandle - phandle to the PMU system controller

  - hdmi-phandle - phandle to the HDMI controller

  - hdmi-phandle - phandle to the HDMI controller





Optional:

  - needs-hpd : if present the CEC support is only available when the HPD

    is high. Some boards only let the CEC pin through if the HPD is high, for

    example if there is a level converter that uses the HPD to power up

    or down.



Example:

Example:





hdmicec: cec@100B0000 {

hdmicec: cec@100B0000 {