[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: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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@ -17,6 +17,12 @@ Required properties:
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- samsung,syscon-phandle - phandle to the PMU system controller
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- hdmi-phandle - phandle to the HDMI controller
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Optional:
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- needs-hpd : if present the CEC support is only available when the HPD
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is high. Some boards only let the CEC pin through if the HPD is high, for
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example if there is a level converter that uses the HPD to power up
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or down.
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Example:
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hdmicec: cec@100B0000 {
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