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authorNishanth Menon <nm@ti.com>2021-04-26 19:40:08 +0300
committerRob Herring <robh@kernel.org>2021-05-10 19:54:31 +0300
commitbe78329717e47649789fd4604960c6fc1a859eb1 (patch)
treea8ef74a37aae1c46bb4c48e061ab1b85a0e28f87 /Documentation/devicetree/bindings/arm/firmware
parent5a9652f6994eb7a3424de3e206860dd3bef8b819 (diff)
downloadlinux-be78329717e47649789fd4604960c6fc1a859eb1.tar.xz
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.txt31
-rw-r--r--Documentation/devicetree/bindings/arm/firmware/linaro,optee-tz.yaml58
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";
+ };
+ };