linux-kernel - [PATCH 1/3] dt-bindings: Document the dmas and dma-names properties for VC4 HDMI

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Message-Id: <20170207210703.7082-1-eric@anholt.net>
Date:   Tue,  7 Feb 2017 13:07:01 -0800
From:   Eric Anholt <eric@...olt.net>
To:     Florian Fainelli <f.fainelli@...il.com>,
        David Airlie <airlied@...ux.ie>,
        dri-devel@...ts.freedesktop.org, Mark Brown <broonie@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>, devicetree@...r.kernel.org
Cc:     linux-rpi-kernel@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Stephen Warren <swarren@...dotorg.org>,
        Lee Jones <lee@...nel.org>,
        bcm-kernel-feedback-list@...adcom.com,
        Boris Brezillon <boris.brezillon@...e-electrons.com>,
        Eric Anholt <eric@...olt.net>
Subject: [PATCH 1/3] dt-bindings: Document the dmas and dma-names properties for VC4 HDMI

From: Boris Brezillon <boris.brezillon@...e-electrons.com>

These are optional, but necessary for HDMI audio support.

Signed-off-by: Boris Brezillon <boris.brezillon@...e-electrons.com>
Signed-off-by: Eric Anholt <eric@...olt.net>
---
 Documentation/devicetree/bindings/display/brcm,bcm-vc4.txt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/brcm,bcm-vc4.txt b/Documentation/devicetree/bindings/display/brcm,bcm-vc4.txt
index 34c7fddcea39..ca02d3e4db91 100644
--- a/Documentation/devicetree/bindings/display/brcm,bcm-vc4.txt
+++ b/Documentation/devicetree/bindings/display/brcm,bcm-vc4.txt
@@ -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"
-- 
2.11.0