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Diffstat (limited to 'Documentation/devicetree/bindings/arm/freescale/fsl,s400-api.yaml')
-rw-r--r-- | Documentation/devicetree/bindings/arm/freescale/fsl,s400-api.yaml | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/arm/freescale/fsl,s400-api.yaml b/Documentation/devicetree/bindings/arm/freescale/fsl,s400-api.yaml new file mode 100644 index 000000000000..fe2c2b69b63c --- /dev/null +++ b/Documentation/devicetree/bindings/arm/freescale/fsl,s400-api.yaml @@ -0,0 +1,48 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/arm/freescale/fsl,s400-api.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: NXP S400 Baseline API module + +maintainers: + - Alice Guo <alice.guo@nxp.com> + +description: | + In the Sentinel application, the security subsystem uses S4 MU-AP to + communicate and coordinate with the SoC host processor. The s400-api firmware + driver provides the services to transmit data to and receive data from the + S4 MU-AP. + +properties: + compatible: + items: + - const: fsl,imx8ulp-s400 + + mboxes: + description: | + Use the mailbox provided by S4 MU-AP device to communicate with the S400. + It should contain 2 mailboxes, one for transmitting messages and another + for receiving. + maxItems: 1 + + mbox-names: + items: + - const: tx + - const: rx + +required: + - compatible + - mboxes + - mbox-names + +additionalProperties: false + +examples: + - | + s400-api { + compatible = "fsl,imx8ulp-s400"; + mboxes = <&s4muap 0 0 &s4muap 1 0>; + mbox-names = "tx", "rx"; + }; |