Re: [PATCH] dt-bindings: arm: firmware: Convert linaro,optee-tz to json schema
From: Jens Wiklander <jens.wiklander@linaro.org>
Date: 2021-04-20 08:32:53
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linux-devicetree, lkml
On Sat, Apr 17, 2021 at 12:25 AM Nishanth Menon [off-list ref] wrote:
quoted hunk ↗ jump to hunk
Convert linaro,optee-tz to json schema format for better documentation and error checks. NOTE: 1. This change does introduce a stricter naming convention for optee nodes. 2. We do have false positive checkpatch warning with this patch: "DT binding docs and includes should be a separate patch" Signed-off-by: Nishanth Menon <nm@ti.com> --- .../bindings/arm/firmware/linaro,optee-tz.txt | 31 ---------- .../arm/firmware/linaro,optee-tz.yaml | 62 +++++++++++++++++++ 2 files changed, 62 insertions(+), 31 deletions(-) delete mode 100644 Documentation/devicetree/bindings/arm/firmware/linaro,optee-tz.txt create mode 100644 Documentation/devicetree/bindings/arm/firmware/linaro,optee-tz.yamldiff --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..6513b5ac8b2c --- /dev/null +++ b/Documentation/devicetree/bindings/arm/firmware/linaro,optee-tz.yaml@@ -0,0 +1,62 @@ +# 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#
Are these links supposed to work? Thanks, Jens
+
+title: OP-TEE Device Tree Bindings
+
+maintainers:
+ - Jens Wiklander [off-list ref]
+
+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:
+ description: The method of calling the OP-TEE Trusted OS.
+ oneOf:
+ - description: |
+ SMC #0, with the register assignments specified
+ in drivers/tee/optee/optee_smc.h
+ items:
+ - const: smc
+ - description: |
+ HVC #0, with the register assignments specified
+ in drivers/tee/optee/optee_smc.h
+ items:
+ - const: hvc
+
+required:
+ - compatible
+ - method
+
+additionalProperties: false
+
+examples:
+ - |
+ firmware {
+ optee {
+ compatible = "linaro,optee-tz";
+ method = "smc";
+ };
+ };
+
+ - |
+ firmware {
+ optee {
+ compatible = "linaro,optee-tz";
+ method = "hvc";
+ };
+ };
--
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