[PATCH 01/22] dt-bindings: media: qcom,venus-common: Allow IOVA reservation memory-region
Vikash Garodia <[email protected]>
| Newsgroups | org.kernel.vger.linux-arm-msm,org.kernel.vger.linux-devicetree,org.kernel.vger.linux-kernel,org.kernel.vger.linux-media,org.kernel.vger.stable |
|---|---|
| Message-ID | <[email protected]> |
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: [email protected]
Signed-off-by: Vikash Garodia <[email protected]>
---
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