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crypto: ixp4xx - Add DT bindings
This adds device tree bindings for the ixp4xx crypto engine. Cc: Corentin Labbe <clabbe@baylibre.com> Cc: devicetree@vger.kernel.org Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
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# Copyright 2018 Linaro Ltd.
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%YAML 1.2
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---
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$id: "http://devicetree.org/schemas/crypto/intel,ixp4xx-crypto.yaml#"
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$schema: "http://devicetree.org/meta-schemas/core.yaml#"
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title: Intel IXP4xx cryptographic engine
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maintainers:
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- Linus Walleij <linus.walleij@linaro.org>
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description: |
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The Intel IXP4xx cryptographic engine makes use of the IXP4xx NPE
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(Network Processing Engine). Since it is not a device on its own
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it is defined as a subnode of the NPE, if crypto support is
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available on the platform.
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properties:
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compatible:
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const: intel,ixp4xx-crypto
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intel,npe-handle:
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$ref: '/schemas/types.yaml#/definitions/phandle-array'
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maxItems: 1
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description: phandle to the NPE this crypto engine is using, the cell
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describing the NPE instance to be used.
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queue-rx:
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$ref: /schemas/types.yaml#/definitions/phandle-array
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maxItems: 1
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description: phandle to the RX queue on the NPE, the cell describing
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the queue instance to be used.
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queue-txready:
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$ref: /schemas/types.yaml#/definitions/phandle-array
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maxItems: 1
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description: phandle to the TX READY queue on the NPE, the cell describing
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the queue instance to be used.
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required:
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- compatible
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- intel,npe-handle
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- queue-rx
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- queue-txready
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additionalProperties: false
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@ -26,9 +26,16 @@ properties:
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reg:
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reg:
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items:
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items:
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- description: NPE0 register range
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- description: NPE0 (NPE-A) register range
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- description: NPE1 register range
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- description: NPE1 (NPE-B) register range
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- description: NPE2 register range
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- description: NPE2 (NPE-C) register range
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crypto:
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$ref: /schemas/crypto/intel,ixp4xx-crypto.yaml#
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type: object
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description: Optional node for the embedded crypto engine, the node
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should be named with the instance number of the NPE engine used for
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the crypto engine.
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required:
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required:
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- compatible
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- compatible
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@ -38,8 +45,15 @@ additionalProperties: false
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examples:
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examples:
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- |
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- |
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npe@c8006000 {
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npe: npe@c8006000 {
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compatible = "intel,ixp4xx-network-processing-engine";
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compatible = "intel,ixp4xx-network-processing-engine";
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reg = <0xc8006000 0x1000>, <0xc8007000 0x1000>, <0xc8008000 0x1000>;
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reg = <0xc8006000 0x1000>, <0xc8007000 0x1000>, <0xc8008000 0x1000>;
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crypto {
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compatible = "intel,ixp4xx-crypto";
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intel,npe-handle = <&npe 2>;
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queue-rx = <&qmgr 30>;
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queue-txready = <&qmgr 29>;
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};
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};
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};
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...
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...
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