linux-kernel - [PATCH v3 1/9] dt-bindings: host1x: Add memory-contexts property

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Date:   Fri, 18 Feb 2022 13:39:44 +0200
From:   Mikko Perttunen <mperttunen@...dia.com>
To:     thierry.reding@...il.com, jonathanh@...dia.com, joro@...tes.org,
        will@...nel.org, robh+dt@...nel.org, robin.murphy@....com
Cc:     linux-tegra@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Mikko Perttunen <mperttunen@...dia.com>
Subject: [PATCH v3 1/9] dt-bindings: host1x: Add memory-contexts property

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.

Signed-off-by: Mikko Perttunen <mperttunen@...dia.com>
---
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
 
-- 
2.35.0