diff options
author | Nishanth Menon <nm@ti.com> | 2021-04-26 11:40:08 -0500 |
---|---|---|
committer | Rob Herring <robh@kernel.org> | 2021-05-10 11:54:31 -0500 |
commit | be78329717e47649789fd4604960c6fc1a859eb1 (patch) | |
tree | a8ef74a37aae1c46bb4c48e061ab1b85a0e28f87 /Documentation/devicetree/bindings/arm/firmware | |
parent | 5a9652f6994eb7a3424de3e206860dd3bef8b819 (diff) |
dt-bindings: arm: firmware: Convert linaro,optee-tz to json schema
Convert linaro,optee-tz to json schema format for better documentation
and error checks.
NOTE: This change does introduce a stricter naming convention for
optee nodes.
Signed-off-by: Nishanth Menon <nm@ti.com>
Link: https://lore.kernel.org/r/20210426164008.20000-1-nm@ti.com
Signed-off-by: Rob Herring <robh@kernel.org>
Diffstat (limited to 'Documentation/devicetree/bindings/arm/firmware')
-rw-r--r-- | Documentation/devicetree/bindings/arm/firmware/linaro,optee-tz.txt | 31 | ||||
-rw-r--r-- | Documentation/devicetree/bindings/arm/firmware/linaro,optee-tz.yaml | 58 |
2 files changed, 58 insertions, 31 deletions
diff --git a/Documentation/devicetree/bindings/arm/firmware/linaro,optee-tz.txt b/Documentation/devicetree/bindings/arm/firmware/linaro,optee-tz.txt deleted file mode 100644 index d38834c67dff..000000000000 --- a/Documentation/devicetree/bindings/arm/firmware/linaro,optee-tz.txt +++ /dev/null @@ -1,31 +0,0 @@ -OP-TEE Device Tree Bindings - -OP-TEE is a piece of software using hardware features to provide a Trusted -Execution Environment. The security can be provided with ARM TrustZone, but -also by virtualization or a separate chip. - -We're using "linaro" as the first part of the compatible property for -the reference implementation maintained by Linaro. - -* OP-TEE based on ARM TrustZone required properties: - -- compatible : should contain "linaro,optee-tz" - -- method : The method of calling the OP-TEE Trusted OS. Permitted - values are: - - "smc" : SMC #0, with the register assignments specified - in drivers/tee/optee/optee_smc.h - - "hvc" : HVC #0, with the register assignments specified - in drivers/tee/optee/optee_smc.h - - - -Example: - firmware { - optee { - compatible = "linaro,optee-tz"; - method = "smc"; - }; - }; diff --git a/Documentation/devicetree/bindings/arm/firmware/linaro,optee-tz.yaml b/Documentation/devicetree/bindings/arm/firmware/linaro,optee-tz.yaml new file mode 100644 index 000000000000..c24047c1fdd5 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/firmware/linaro,optee-tz.yaml @@ -0,0 +1,58 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/arm/firmware/linaro,optee-tz.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: OP-TEE Device Tree Bindings + +maintainers: + - Jens Wiklander <jens.wiklander@linaro.org> + +description: | + OP-TEE is a piece of software using hardware features to provide a Trusted + Execution Environment. The security can be provided with ARM TrustZone, but + also by virtualization or a separate chip. + + We're using "linaro" as the first part of the compatible property for + the reference implementation maintained by Linaro. + +properties: + $nodename: + const: optee + + compatible: + const: linaro,optee-tz + + method: + enum: [smc, hvc] + description: | + The method of calling the OP-TEE Trusted OS depending on smc or hvc + instruction usage. + SMC #0, register assignments + or + HVC #0, register assignments + register assignments are specified in drivers/tee/optee/optee_smc.h + +required: + - compatible + - method + +additionalProperties: false + +examples: + - | + firmware { + optee { + compatible = "linaro,optee-tz"; + method = "smc"; + }; + }; + + - | + firmware { + optee { + compatible = "linaro,optee-tz"; + method = "hvc"; + }; + }; |