On 2022-02-18 11:39, Mikko Perttunen via iommu wrote:
Add schema information for the memory-contexts property used to specify context stream IDs. This uses the standard iommu-map property inside a child node.
Couldn't you simply make "iommu-map" an allowed property on the host1x node itself? From a DT perspective I'm not sure the intermediate node really fits meaningfully, and I can't see that it serves much purpose in practice either, other than perhaps defeating fw_devlink.
Robin.
Signed-off-by: Mikko Perttunen <mperttunen@xxxxxxxxxx> --- v3: * New patch --- .../bindings/display/tegra/nvidia,tegra20-host1x.yaml | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.yaml b/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.yaml index 4fd513efb0f7..3ac0fde54a16 100644 --- a/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.yaml +++ b/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.yaml @@ -144,6 +144,16 @@ allOf: reset-names: maxItems: 1+ memory-contexts:+ type: object + properties: + iommu-map: + description: Specification of stream IDs available for memory context device + use. Should be a mapping of IDs 0..n to IOMMU entries corresponding to + usable stream IDs. + required: + - iommu-map + required: - reg-names
