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dt-bindings: Document the dmas and dma-names properties for VC4 HDMI 

These are optional, but necessary for HDMI audio support.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Acked-by: Rob Herring <robh@kernel.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170227202803.12855-1-eric@anholt.net
This commit is contained in:
Boris Brezillon 2017-02-27 12:28:01 -08:00 committed by Eric Anholt
parent 99ed4d7eb2
commit 199a76946d
1 changed files with 3 additions and 0 deletions
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Documentation/devicetree/bindings/display/brcm,bcm-vc4.txt
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@ -34,6 +34,9 @@ Optional properties for HDMI:
- hpd-gpios: The GPIO pin for HDMI hotplug detect (if it doesn't appear
as an interrupt/status bit in the HDMI controller
itself). See bindings/pinctrl/brcm,bcm2835-gpio.txt
- dmas: Should contain one entry pointing to the DMA channel used to
transfer audio data
- dma-names: Should contain "audio-rx"
Required properties for DPI:
- compatible: Should be "brcm,bcm2835-dpi"