From: Rob Herring <robh@kernel.org>
To: Vinod Koul <vkoul@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
Cc: dmaengine@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v2] dt-bindings: dma: arm,pl330: Add missing 'iommus' property
Date: Mon, 1 Aug 2022 15:02:37 -0600 [thread overview]
Message-ID: <20220801210237.1501488-1-robh@kernel.org> (raw)
The pl330 can be behind an IOMMU which is the case for Arm Juno board.
Add the 'iommus' property allowing for 1 IOMMU entry per channel for
writes and 1 IOMMU entry for reads.
Signed-off-by: Rob Herring <robh@kernel.org>
---
v2:
- Include IOMMU entry for read channel
---
Documentation/devicetree/bindings/dma/arm,pl330.yaml | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/Documentation/devicetree/bindings/dma/arm,pl330.yaml b/Documentation/devicetree/bindings/dma/arm,pl330.yaml
index 2bec69b308f8..4a3dd6f5309b 100644
--- a/Documentation/devicetree/bindings/dma/arm,pl330.yaml
+++ b/Documentation/devicetree/bindings/dma/arm,pl330.yaml
@@ -55,6 +55,12 @@ properties:
dma-coherent: true
+ iommus:
+ minItems: 1
+ maxItems: 9
+ description: Up to 1 IOMMU entry per DMA channel for writes and 1
+ IOMMU entry for reads.
+
power-domains:
maxItems: 1
--
2.34.1
next reply other threads:[~2022-08-01 21:02 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-01 21:02 Rob Herring [this message]
2022-09-02 16:06 ` [PATCH v2] dt-bindings: dma: arm,pl330: Add missing 'iommus' property Rob Herring
2022-09-04 16:11 ` Vinod Koul
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