Introduce compatible "linaro,scmi-optee" for SCMI transport channel
based on an OP-TEE service invocation. The compatible mandates a
channel ID defined with property "linaro,optee-channel-id".
Cc: devicetree@xxxxxxxxxxxxxxx
Cc: Rob Herring <robh+dt@xxxxxxxxxx>
Signed-off-by: Etienne Carriere <etienne.carriere@xxxxxxxxxx>
---
Changes since v2:
- Define mandatory property linaro,optee-channel-id
- Rebased on yaml description file
Changes since v1:
- Removed modification regarding mboxes property description.
---
.../bindings/firmware/arm,scmi.yaml | 44 +++++++++++++++++++
1 file changed, 44 insertions(+)
diff --git a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
index 5c4c6782e052..12154ecc081b 100644
--- a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
+++ b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
@@ -38,6 +38,9 @@ properties:
The virtio transport only supports a single device.
items:
- const: arm,scmi-virtio
+ - description: SCMI compliant firmware with OP-TEE transport
+ items:
+ - const: linaro,scmi-optee
interrupts:
description:
@@ -83,6 +86,11 @@ properties:
description:
SMC id required when using smc or hvc transports
+ linaro,optee-channel-id:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ Channel id required when using OP-TEE transports
+
protocol@11:
type: object
properties:
@@ -195,6 +203,9 @@ patternProperties:
minItems: 1
maxItems: 2
+ linaro,optee-channel-id:
+ maxItems: 1
+
required:
- reg
@@ -226,6 +237,16 @@ else:
- arm,smc-id
- shmem
+ else:
+ if:
+ properties:
+ compatible:
+ contains:
+ const: linaro,scmi-optee
+ then:
+ required:
+ - linaro,optee-channel-id
+
examples:
- |
firmware {
@@ -340,7 +361,30 @@ examples:
reg = <0x11>;
#power-domain-cells = <1>;
};
+ };
+ };
+
+ - |
+ firmware {
+ scmi {
+ compatible = "linaro,scmi-optee";
+ linaro,optee-channel = <0>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ scmi_clk: protocol@14 {
+ reg = <0x14>;
+ #clock-cells = <1>;
+ };
+
+ scmi_dvfs: protocol@13 {
+ reg = <0x13>;
+ #clock-cells = <1>;
+ linaro,optee-channel = <1>;
+ shmem = <&cpu_scp_hpri0>;
+ };
};
};
--
2.17.1
