Re: [RFC PATCH 1/4] dt-bindings: Add bidings for mtk,apu-drm
From: Rob Herring <robh@kernel.org>
Date: 2021-09-20 20:58:11
Also in:
dri-devel, linux-devicetree, linux-media, linux-mediatek, linux-remoteproc, lkml
On Fri, Sep 17, 2021 at 02:59:42PM +0200, Alexandre Bailon wrote:
quoted hunk ↗ jump to hunk
This adds the device tree bindings for the APU DRM driver. Signed-off-by: Alexandre Bailon <redacted> --- .../devicetree/bindings/gpu/mtk,apu-drm.yaml | 38 +++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpu/mtk,apu-drm.yamldiff --git a/Documentation/devicetree/bindings/gpu/mtk,apu-drm.yaml b/Documentation/devicetree/bindings/gpu/mtk,apu-drm.yaml new file mode 100644 index 0000000000000..6f432d3ea478c --- /dev/null +++ b/Documentation/devicetree/bindings/gpu/mtk,apu-drm.yaml@@ -0,0 +1,38 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/gpu/mediatek,apu-drm.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: AI Processor Unit DRM
DRM is a linux thing, not h/w.
+ +properties: + compatible: + const: mediatek,apu-drm + + remoteproc:
So is remoteproc. Why don't you have the remoteproc driver create the DRM device?
+ maxItems: 2 + description: + Handle to remoteproc devices controlling the APU + + iova: + maxItems: 1 + description: + Address and size of virtual memory that could used by the APU
Why does this need to be in DT? If you need to reserve certain VAs, then this discussion[1] might be of interest. Rob [1] https://lore.kernel.org/all/YUIPCxnyRutMS47%2F@orome.fritz.box/ (local) _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel