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[v2] dt-bindings: qcom: document preferred compatible naming

Message ID 20220704101823.82122-1-krzysztof.kozlowski@linaro.org
State New
Headers show
Series [v2] dt-bindings: qcom: document preferred compatible naming | expand

Commit Message

Krzysztof Kozlowski July 4, 2022, 10:18 a.m. UTC 
Compatibles can come in two formats.  Either "vendor,ip-soc" or
"vendor,soc-ip".  Qualcomm bindings were mixing both of usages, so add a
DT schema file documenting preferred policy and enforcing it for all new
compatibles, except few existing patterns.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

---

Changes since v1:
1. Add schema instead of readme (Rob).

Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Cc: Vinod Koul <vkoul@kernel.org>
Cc: Alex Elder <elder@linaro.org>
Cc: Robert Foss <robert.foss@linaro.org>
Cc: Bhupesh Sharma <bhupesh.sharma@linaro.org>
---
 .../devicetree/bindings/arm/qcom-soc.yaml     | 55 +++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/arm/qcom-soc.yaml
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Patch

diff --git a/Documentation/devicetree/bindings/arm/qcom-soc.yaml b/Documentation/devicetree/bindings/arm/qcom-soc.yaml
new file mode 100644
index 000000000000..1af1f16c13ab
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/qcom-soc.yaml
@@ -0,0 +1,55 @@ 
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/qcom-soc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm SoC compatibles naming convention
+
+maintainers:
+  - Bjorn Andersson <bjorn.andersson@linaro.org>
+
+description: |
+  Guidelines for new compatibles for SoC blocks/components.
+  When adding new compatibles in new bindings, use the format::
+    qcom,SoC-IP
+
+  For example::
+   qcom,sdm845-llcc-bwmon
+
+  When adding new compatibles to existing bindings, use the format in the
+  existing binding, even if it contradicts the above.
+
+select:
+  properties:
+    compatible:
+      pattern: "^qcom,.*(apq|ipq|mdm|msm|qcs|sa|sc|sdm|sdx|sm)[0-9]+.*$"
+  required:
+    - compatible
+
+properties:
+  compatible:
+    oneOf:
+      - description: Preferred naming style for compatibles of SoC components
+        pattern: "^qcom,(apq|ipq|mdm|msm|qcs|sa|sc|sdm|sdx|sm)[0-9]+.*$"
+
+      # Legacy namings - variations of existing patterns/compatibles are OK,
+      # but do not add completely new entries to these:
+      - pattern: "^qcom,gcc-(apq|ipq|mdm|msm|qcs|sa|sc|sdm|sdx|sm)[0-9]+.*$"
+      - pattern: "^qcom,mmcc-(apq|ipq|mdm|msm|qcs|sa|sc|sdm|sdx|sm)[0-9]+.*$"
+      - pattern: "^qcom,pcie-(apq|ipq|mdm|msm|qcs|sa|sc|sdm|sdx|sm)[0-9]+.*$"
+      - pattern: "^qcom,rpm-(apq|ipq|mdm|msm|qcs|sa|sc|sdm|sdx|sm)[0-9]+.*$"
+      - pattern: "^qcom,scm-(apq|ipq|mdm|msm|qcs|sa|sc|sdm|sdx|sm)[0-9]+.*$"
+      - enum:
+          - qcom,gpucc-sdm630
+          - qcom,gpucc-sdm660
+          - qcom,lcc-apq8064
+          - qcom,lcc-ipq8064
+          - qcom,lcc-mdm9615
+          - qcom,lcc-msm8960
+          - qcom,lpass-cpu-apq8016
+          - qcom,usb-ss-ipq4019-phy
+          - qcom,usb-hs-ipq4019-phy
+          - qcom,vqmmc-ipq4019-regulator
+
+additionalProperties: true