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Diffstat (limited to 'Documentation/devicetree/bindings/arm/freescale/fsl,seco_mu.yaml')
-rw-r--r-- | Documentation/devicetree/bindings/arm/freescale/fsl,seco_mu.yaml | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/arm/freescale/fsl,seco_mu.yaml b/Documentation/devicetree/bindings/arm/freescale/fsl,seco_mu.yaml new file mode 100644 index 000000000000..c36bea2079c2 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/freescale/fsl,seco_mu.yaml @@ -0,0 +1,78 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/arm/freescale/fsl,seco_mu.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: NXP i.MX8 SECO MU driver + +maintainers: + - Aisheng Dong <aisheng.dong@nxp.com> + +description: | + Create char devices in /dev as channels of the form /dev/seco_muXchY with X + the id of the driver and Y for each users. It allows to send and receive + messages to the SECO. + +properties: + compatible: + enum: + - fsl,imx-seco-mu + + mboxes: + description: + List of <&phandle type channel> - 4 channels for TX, 4 channels for RX, + 1 channel for TXDB (see mailbox/fsl,mu.txt) + maxItems: 9 + + mbox-names: + items: + - const: txdb + - const: rxdb + + fsl,seco_mu_id: + description: + Identify the driver instance, used to create the channels, default to 1 + allOf: + - $ref: /schemas/types.yaml#/definitions/uint32 + - enum: [0,1,2,3] + + fsl,seco_max_users: + description: + Number of channels to create, default to 4 + allOf: + - $ref: /schemas/types.yaml#/definitions/uint32 + - enum: [0,1,2,3,4,5,6,7,8,9] + + fsl,cmd_tag: + description: + Tag in message header for commands on this MU, default to 0x17 + allOf: + - $ref: /schemas/types.yaml#/definitions/uint8 + - enum: [0x17,0x18,0x19,0x1a,0x1b,0x1c,0x1d,0x1e] + + fsl,rsp_tag: + description: + Tag in message header for responses on this MU, default to 0xe1 + allOf: + - $ref: /schemas/types.yaml#/definitions/uint8 + - enum: [0xe1,0xe2,0xe3,0xe4,0xe5,0xe6,0xe7,0xe8] + +required: + - compatible + - mboxes + - mbox-names + +examples: + - | + seco_mu: seco_mu { + compatible = "fsl,imx-seco-mu"; + mbox-names = "txdb", "rxdb"; + mboxes = <&mu 2 0 + &mu 3 0>; + + fsl,seco_mu_id = <1>; + fsl,seco_max_users = <4>; + fsl,cmd_tag = /bits/ 8 <0x17>; + fsl,rsp_tag = /bits/ 8 <0xe1>; + }; |