linaro,optee-tz.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/arm/firmware/linaro,optee-tz.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: OP-TEE Device Tree Bindings
    8 
    9 maintainers:
   10   - Jens Wiklander <jens.wiklander@linaro.org>
   11 
   12 description: |
   13   OP-TEE is a piece of software using hardware features to provide a Trusted
   14   Execution Environment. The security can be provided with ARM TrustZone, but
   15   also by virtualization or a separate chip.
   16 
   17   We're using "linaro" as the first part of the compatible property for
   18   the reference implementation maintained by Linaro.
   19 
   20 properties:
   21   $nodename:
   22     const: optee
   23 
   24   compatible:
   25     const: linaro,optee-tz
   26 
   27   interrupts:
   28     maxItems: 1
   29     description: |
   30       This interrupt which is used to signal an event by the secure world
   31       software is expected to be edge-triggered.
   32 
   33   method:
   34     enum: [smc, hvc]
   35     description: |
   36       The method of calling the OP-TEE Trusted OS depending on smc or hvc
   37       instruction usage.
   38       SMC #0, register assignments
   39       or
   40       HVC #0, register assignments
   41       register assignments are specified in drivers/tee/optee/optee_smc.h
   42 
   43 required:
   44   - compatible
   45   - method
   46 
   47 additionalProperties: false
   48 
   49 examples:
   50   - |
   51     #include <dt-bindings/interrupt-controller/arm-gic.h>
   52     firmware  {
   53         optee  {
   54             compatible = "linaro,optee-tz";
   55             method = "smc";
   56             interrupts = <GIC_SPI 187 IRQ_TYPE_EDGE_RISING>;
   57         };
   58     };
   59 
   60   - |
   61     firmware  {
   62         optee  {
   63             compatible = "linaro,optee-tz";
   64             method = "hvc";
   65         };
   66     };

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/arm/firmware/linaro,optee-tz.yaml

FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/arm/firmware/linaro,optee-tz.yaml