mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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48a1bfc28a
Convert the Freescale security engine (crypto accelerator) binding from text form to YAML. The list of compatible strings reflects what was previously described in prose; not all combinations occur in existing devicetrees. Reviewed-by: Frank Li <Frank.Li@nxp.com> Signed-off-by: J. Neuschäfer <j.ne@posteo.net> Reviewed-by: Rob Herring (Arm) <robh@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
145 lines
4.5 KiB
YAML
145 lines
4.5 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/crypto/fsl,sec2.0.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Freescale SoC SEC Security Engines versions 1.x-2.x-3.x
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maintainers:
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- J. Neuschäfer <j.ne@posteo.net>
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properties:
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compatible:
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description:
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Should contain entries for this and backward compatible SEC versions,
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high to low. Warning - SEC1 and SEC2 are mutually exclusive.
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oneOf:
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- items:
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- const: fsl,sec3.3
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- const: fsl,sec3.1
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- const: fsl,sec3.0
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- const: fsl,sec2.4
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- const: fsl,sec2.2
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- const: fsl,sec2.1
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- const: fsl,sec2.0
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- items:
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- const: fsl,sec3.1
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- const: fsl,sec3.0
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- const: fsl,sec2.4
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- const: fsl,sec2.2
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- const: fsl,sec2.1
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- const: fsl,sec2.0
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- items:
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- const: fsl,sec3.0
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- const: fsl,sec2.4
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- const: fsl,sec2.2
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- const: fsl,sec2.1
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- const: fsl,sec2.0
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- items:
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- const: fsl,sec2.4
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- const: fsl,sec2.2
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- const: fsl,sec2.1
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- const: fsl,sec2.0
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- items:
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- const: fsl,sec2.2
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- const: fsl,sec2.1
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- const: fsl,sec2.0
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- items:
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- const: fsl,sec2.1
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- const: fsl,sec2.0
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- items:
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- const: fsl,sec2.0
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- items:
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- const: fsl,sec1.2
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- const: fsl,sec1.0
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- items:
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- const: fsl,sec1.0
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reg:
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maxItems: 1
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interrupts:
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maxItems: 1
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fsl,num-channels:
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$ref: /schemas/types.yaml#/definitions/uint32
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enum: [ 1, 4 ]
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description: An integer representing the number of channels available.
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fsl,channel-fifo-len:
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$ref: /schemas/types.yaml#/definitions/uint32
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maximum: 100
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description:
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An integer representing the number of descriptor pointers each channel
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fetch fifo can hold.
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fsl,exec-units-mask:
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$ref: /schemas/types.yaml#/definitions/uint32
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maximum: 0xfff
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description: |
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The bitmask representing what execution units (EUs) are available.
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EU information should be encoded following the SEC's Descriptor Header
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Dword EU_SEL0 field documentation, i.e. as follows:
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bit 0 = reserved - should be 0
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bit 1 = set if SEC has the ARC4 EU (AFEU)
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bit 2 = set if SEC has the DES/3DES EU (DEU)
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bit 3 = set if SEC has the message digest EU (MDEU/MDEU-A)
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bit 4 = set if SEC has the random number generator EU (RNG)
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bit 5 = set if SEC has the public key EU (PKEU)
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bit 6 = set if SEC has the AES EU (AESU)
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bit 7 = set if SEC has the Kasumi EU (KEU)
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bit 8 = set if SEC has the CRC EU (CRCU)
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bit 11 = set if SEC has the message digest EU extended alg set (MDEU-B)
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remaining bits are reserved for future SEC EUs.
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fsl,descriptor-types-mask:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: |
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The bitmask representing what descriptors are available. Descriptor type
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information should be encoded following the SEC's Descriptor Header Dword
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DESC_TYPE field documentation, i.e. as follows:
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bit 0 = SEC supports descriptor type aesu_ctr_nonsnoop
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bit 1 = SEC supports descriptor type ipsec_esp
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bit 2 = SEC supports descriptor type common_nonsnoop
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bit 3 = SEC supports descriptor type 802.11i AES ccmp
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bit 4 = SEC supports descriptor type hmac_snoop_no_afeu
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bit 5 = SEC supports descriptor type srtp
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bit 6 = SEC supports descriptor type non_hmac_snoop_no_afeu
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bit 7 = SEC supports descriptor type pkeu_assemble
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bit 8 = SEC supports descriptor type aesu_key_expand_output
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bit 9 = SEC supports descriptor type pkeu_ptmul
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bit 10 = SEC supports descriptor type common_nonsnoop_afeu
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bit 11 = SEC supports descriptor type pkeu_ptadd_dbl
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..and so on and so forth.
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required:
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- compatible
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- reg
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- fsl,num-channels
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- fsl,channel-fifo-len
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- fsl,exec-units-mask
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- fsl,descriptor-types-mask
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unevaluatedProperties: false
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examples:
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- |
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/* MPC8548E */
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crypto@30000 {
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compatible = "fsl,sec2.1", "fsl,sec2.0";
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reg = <0x30000 0x10000>;
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interrupts = <29 2>;
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interrupt-parent = <&mpic>;
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fsl,num-channels = <4>;
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fsl,channel-fifo-len = <24>;
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fsl,exec-units-mask = <0xfe>;
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fsl,descriptor-types-mask = <0x12b0ebf>;
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};
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...
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