diff options
Diffstat (limited to 'dts/Bindings/firmware/arm,scmi.yaml')
| -rw-r--r-- | dts/Bindings/firmware/arm,scmi.yaml | 126 |
1 files changed, 102 insertions, 24 deletions
diff --git a/dts/Bindings/firmware/arm,scmi.yaml b/dts/Bindings/firmware/arm,scmi.yaml index 948e2a38be..4591523b51 100644 --- a/dts/Bindings/firmware/arm,scmi.yaml +++ b/dts/Bindings/firmware/arm,scmi.yaml @@ -5,7 +5,7 @@ $id: http://devicetree.org/schemas/firmware/arm,scmi.yaml# $schema: http://devicetree.org/meta-schemas/core.yaml# -title: System Control and Management Interface (SCMI) Message Protocol bindings +title: System Control and Management Interface (SCMI) Message Protocol maintainers: - Sudeep Holla <sudeep.holla@arm.com> @@ -34,6 +34,13 @@ properties: - description: SCMI compliant firmware with ARM SMC/HVC transport items: - const: arm,scmi-smc + - description: SCMI compliant firmware with ARM SMC/HVC transport + with shmem address(4KB-page, offset) as parameters + items: + - const: arm,scmi-smc-param + - description: SCMI compliant firmware with Qualcomm SMC/HVC transport + items: + - const: qcom,scmi-smc - description: SCMI compliant firmware with SCMI Virtio transport. The virtio transport only supports a single device. items: @@ -56,17 +63,38 @@ properties: description: Specifies the mailboxes used to communicate with SCMI compliant firmware. - items: - - const: tx - - const: rx + oneOf: + - items: + - const: tx + - const: rx + minItems: 1 + - items: + - const: tx + - const: tx_reply + - const: rx + minItems: 2 mboxes: description: List of phandle and mailbox channel specifiers. It should contain - exactly one or two mailboxes, one for transmitting messages("tx") - and another optional for receiving the notifications("rx") if supported. + exactly one, two or three mailboxes; the first one or two for transmitting + messages ("tx") and another optional ("rx") for receiving notifications + and delayed responses, if supported by the platform. + The number of mailboxes needed for transmitting messages depends on the + type of channels exposed by the specific underlying mailbox controller; + one single channel descriptor is enough if such channel is bidirectional, + while two channel descriptors are needed to represent the SCMI ("tx") + channel if the underlying mailbox channels are of unidirectional type. + The effective combination in numbers of mboxes and shmem descriptors let + the SCMI subsystem determine unambiguosly which type of SCMI channels are + made available by the underlying mailbox controller and how to use them. + 1 mbox / 1 shmem => SCMI TX over 1 mailbox bidirectional channel + 2 mbox / 2 shmem => SCMI TX and RX over 2 mailbox bidirectional channels + 2 mbox / 1 shmem => SCMI TX over 2 mailbox unidirectional channels + 3 mbox / 2 shmem => SCMI TX and RX over 3 mailbox unidirectional channels + Any other combination of mboxes and shmem is invalid. minItems: 1 - maxItems: 2 + maxItems: 3 shmem: description: @@ -100,7 +128,9 @@ properties: Channel specifier required when using OP-TEE transport. protocol@11: - type: object + $ref: '#/$defs/protocol-node' + unevaluatedProperties: false + properties: reg: const: 0x11 @@ -112,7 +142,9 @@ properties: - '#power-domain-cells' protocol@13: - type: object + $ref: '#/$defs/protocol-node' + unevaluatedProperties: false + properties: reg: const: 0x13 @@ -120,11 +152,20 @@ properties: '#clock-cells': const: 1 - required: - - '#clock-cells' + '#power-domain-cells': + const: 1 + + oneOf: + - required: + - '#clock-cells' + + - required: + - '#power-domain-cells' protocol@14: - type: object + $ref: '#/$defs/protocol-node' + unevaluatedProperties: false + properties: reg: const: 0x14 @@ -136,7 +177,9 @@ properties: - '#clock-cells' protocol@15: - type: object + $ref: '#/$defs/protocol-node' + unevaluatedProperties: false + properties: reg: const: 0x15 @@ -148,7 +191,9 @@ properties: - '#thermal-sensor-cells' protocol@16: - type: object + $ref: '#/$defs/protocol-node' + unevaluatedProperties: false + properties: reg: const: 0x16 @@ -160,20 +205,31 @@ properties: - '#reset-cells' protocol@17: - type: object + $ref: '#/$defs/protocol-node' + unevaluatedProperties: false + properties: reg: const: 0x17 regulators: type: object + additionalProperties: false description: The list of all regulators provided by this SCMI controller. + properties: + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + patternProperties: - '^regulators@[0-9a-f]+$': + '^regulator@[0-9a-f]+$': type: object - $ref: "../regulator/regulator.yaml#" + $ref: /schemas/regulator/regulator.yaml# + unevaluatedProperties: false properties: reg: @@ -183,10 +239,18 @@ properties: required: - reg + protocol@18: + $ref: '#/$defs/protocol-node' + unevaluatedProperties: false + + properties: + reg: + const: 0x18 + additionalProperties: false -patternProperties: - '^protocol@[0-9a-f]+$': +$defs: + protocol-node: type: object description: Each sub-node represents a protocol supported. If the platform @@ -199,13 +263,20 @@ patternProperties: maxItems: 1 mbox-names: - items: - - const: tx - - const: rx + oneOf: + - items: + - const: tx + - const: rx + minItems: 1 + - items: + - const: tx + - const: tx_reply + - const: rx + minItems: 2 mboxes: minItems: 1 - maxItems: 2 + maxItems: 3 shmem: minItems: 1 @@ -242,7 +313,10 @@ else: properties: compatible: contains: - const: arm,scmi-smc + enum: + - arm,scmi-smc + - arm,scmi-smc-param + - qcom,scmi-smc then: required: - arm,smc-id @@ -323,6 +397,10 @@ examples: }; }; }; + + scmi_powercap: protocol@18 { + reg = <0x18>; + }; }; }; |