[PATCH 01/22] dt-bindings: media: qcom,venus-common: Allow IOVA reservation memory-region

[Vikash Garodia]

Non-pixel stream IDs should not allocate IOVA space from the 0 to 600MB
restricted region, as this region is reserved exclusively for secure
non-pixel.

In addition to the firmware-loaded codec carveout, platforms need to
declare an IOMMU IOVA reservation (a reserved-memory node with
iommu-addresses) to keep DMA away from restricted IOVA range.

Permit a second memory-region phandle for this purpose, and describe the
meaning of each entry so the ordering is unambiguous.

Fixes: f8cc21d454c5 ("media: dt-bindings: qcom,venus: split common properties")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Vikash Garodia <vikash.garodia@xxxxxxxxxxxxxxxx>
---
 Documentation/devicetree/bindings/media/qcom,venus-common.yaml | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/media/qcom,venus-common.yaml b/Documentation/devicetree/bindings/media/qcom,venus-common.yaml
index 59a3fde846d2196ab1e4588eb396012ba6860712..0be2f9119e78233928d23af86836ac294aa769ee 100644
--- a/Documentation/devicetree/bindings/media/qcom,venus-common.yaml
+++ b/Documentation/devicetree/bindings/media/qcom,venus-common.yaml
@@ -37,7 +37,10 @@ properties:
     maxItems: 20
 
   memory-region:
-    maxItems: 1
+    minItems: 1
+    items:
+      - description: Firmware-loaded codec carveout
+      - description: IOMMU IOVA reservation region
 
   power-domains:
     minItems: 1

-- 
2.34.1