[PATCH 02/22] dt-bindings: media: qcom,sm8550-iris: Allow IOVA reservation memory-region
Vikash Garodia <[email protected]>
| Newsgroups | org.kernel.vger.stable,org.kernel.vger.linux-arm-msm,org.kernel.vger.linux-devicetree,org.kernel.vger.linux-kernel,org.kernel.vger.linux-media |
|---|---|
| Message-ID | <[email protected]> |
From: Daniel J Blueman <[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, Iris 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: 9065340ac04d ("arm64: dts: qcom: x1e80100: Add IRIS video codec") Cc: [email protected] Signed-off-by: Daniel J Blueman <[email protected]> Reviewed-by: Krzysztof Kozlowski <[email protected]> Signed-off-by: Vikash Garodia <[email protected]> --- Documentation/devicetree/bindings/media/qcom,sm8550-iris.yaml | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/media/qcom,sm8550-iris.yaml b/Documentation/devicetree/bindings/media/qcom,sm8550-iris.yaml index 0400ca1bff05dcef6b742c3fbf77e38adca9f280..7dff7293fd5c834b0ea617ece87ffbf0d40e821a 100644 --- a/Documentation/devicetree/bindings/media/qcom,sm8550-iris.yaml +++ b/Documentation/devicetree/bindings/media/qcom,sm8550-iris.yaml @@ -84,7 +84,10 @@ properties: dma-coherent: true memory-region: - maxItems: 1 + minItems: 1 + items: + - description: Firmware-loaded codec carveout + - description: IOMMU IOVA reservation region operating-points-v2: true -- 2.34.1