On 2020-05-05 5:51 pm, Andre Przywara wrote:
Date: Mon, 4 May 2020 12:41:55 +0100 Subject: [PATCH 01/16] dt-bindings: mali-midgard: Allow dma-coherent Add the boolean dma-coherent property to the list of allowed properties, since some boards (Arm Juno) integrate the GPU this way.
The same comment as for "iommus" applies to some degree here too. There's a bit more likelihood that the device itself does want to know whether it's integrated coherently, so that it can choose what memory attributes to use (as is the case here), but with protocols like ACE-lite it's possible to hard-wire any old dumb device to behave coherently without even realising. Thus this is another property that could legitimately turn up more or less anywhere.
Robin.
Signed-off-by: Andre Przywara <andre.przywara@xxxxxxx> --- Documentation/devicetree/bindings/gpu/arm,mali-midgard.yaml | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/gpu/arm,mali-midgard.yaml b/Documentation/devicetree/bindings/gpu/arm,mali-midgard.yaml index 0407e45eb8c4..5d7165385e1f 100644 --- a/Documentation/devicetree/bindings/gpu/arm,mali-midgard.yaml +++ b/Documentation/devicetree/bindings/gpu/arm,mali-midgard.yaml @@ -87,6 +87,8 @@ properties: "#cooling-cells": const: 2+ dma-coherent: true+ required: - compatible - reg
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