linux-kernel - [PATCH 2/4] dt-bindings: display/xlnx/zynqmp-dpsub: Add audio DMAs

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Message-Id: <20240312-xilinx-dp-audio-v1-2-696c79facbb9@ideasonboard.com>
Date: Tue, 12 Mar 2024 11:41:03 +0200
From: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
To: Lars-Peter Clausen <lars@...afoo.de>, Jaroslav Kysela <perex@...ex.cz>, 
 Takashi Iwai <tiwai@...e.com>, Liam Girdwood <lgirdwood@...il.com>, 
 Mark Brown <broonie@...nel.org>, 
 Laurent Pinchart <laurent.pinchart@...asonboard.com>, 
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>, 
 Rob Herring <robh+dt@...nel.org>, 
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, 
 Conor Dooley <conor+dt@...nel.org>, Michal Simek <michal.simek@....com>
Cc: linux-sound@...r.kernel.org, linux-kernel@...r.kernel.org, 
 dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, Vishal Sagar <vishal.sagar@....com>, 
 Anatoliy Klymenko <anatoliy.klymenko@....com>, 
 Péter Ujfalusi <peter.ujfalusi@...il.com>, 
 Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
Subject: [PATCH 2/4] dt-bindings: display/xlnx/zynqmp-dpsub: Add audio DMAs

The DP subsystem for ZynqMP support audio via two channels, and the DP
DMA has dma-engines for those channels. For some reason the DT binding
has not specified those channels, even if the picture included in
xlnx,zynqmp-dpsub.yaml shows "2 x aud" DMAs.

Add the two audio DMAs to the binding.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
---
 .../devicetree/bindings/display/xlnx/xlnx,zynqmp-dpsub.yaml    | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/xlnx/xlnx,zynqmp-dpsub.yaml b/Documentation/devicetree/bindings/display/xlnx/xlnx,zynqmp-dpsub.yaml
index 554f9d5809d4..8a56ab923cca 100644
--- a/Documentation/devicetree/bindings/display/xlnx/xlnx,zynqmp-dpsub.yaml
+++ b/Documentation/devicetree/bindings/display/xlnx/xlnx,zynqmp-dpsub.yaml
@@ -100,12 +100,16 @@ properties:
       - description: Video layer, plane 1 (U/V or U)
       - description: Video layer, plane 2 (V)
       - description: Graphics layer
+      - description: Audio channel 0
+      - description: Audio channel 1
   dma-names:
     items:
       - const: vid0
       - const: vid1
       - const: vid2
       - const: gfx0
+      - const: aud0
+      - const: aud1
 
   phys:
     description: PHYs for the DP data lanes
@@ -194,11 +198,13 @@ examples:
         power-domains = <&pd_dp>;
         resets = <&reset ZYNQMP_RESET_DP>;
 
-        dma-names = "vid0", "vid1", "vid2", "gfx0";
+        dma-names = "vid0", "vid1", "vid2", "gfx0", "aud0", "aud1;
         dmas = <&xlnx_dpdma 0>,
                <&xlnx_dpdma 1>,
                <&xlnx_dpdma 2>,
-               <&xlnx_dpdma 3>;
+               <&xlnx_dpdma 3>,
+               <&xlnx_dpdma 4>,
+               <&xlnx_dpdma 5>;
 
         phys = <&psgtr 1 PHY_TYPE_DP 0 3>,
                <&psgtr 0 PHY_TYPE_DP 1 3>;

-- 
2.34.1