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| author | Hans Verkuil <hans.verkuil@cisco.com> | 2017-06-07 16:46:14 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-06-20 11:55:56 +0200 |
| commit | e8537b35bf48979803958c489876952d100afa0a (patch) | |
| tree | 3ce5d093d4a8fa2228d6c874b1f06713b1a71db9 | |
| parent | [media] cec-ioc-adap-g-caps.rst: document CEC_CAP_NEEDS_HPD (diff) | |
| download | linux-e8537b35bf48979803958c489876952d100afa0a.tar.xz linux-e8537b35bf48979803958c489876952d100afa0a.zip | |
[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>
| -rw-r--r-- | Documentation/devicetree/bindings/media/s5p-cec.txt | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/media/s5p-cec.txt b/Documentation/devicetree/bindings/media/s5p-cec.txt index 4bb08d9d940b..261af4d1a791 100644 --- a/Documentation/devicetree/bindings/media/s5p-cec.txt +++ b/Documentation/devicetree/bindings/media/s5p-cec.txt @@ -17,6 +17,12 @@ Required properties: - samsung,syscon-phandle - phandle to the PMU system 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: hdmicec: cec@100B0000 { |