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[v3,1/8] dt-bindings: clock: qcom,msm8996-cbf: Describe the MSM8996 CBF clock controller

Message ID 20230120061417.2623751-2-dmitry.baryshkov@linaro.org
State Accepted
Commit 56c121dcd539e8af365525e4d496d63ed2f156e1
Headers show
Series clk: qcom: msm8996: add support for the CBF clock | expand

Commit Message

Dmitry Baryshkov Jan. 20, 2023, 6:14 a.m. UTC 
MSM8996 Core Bus Fabric (CBF) clock controller clocks an interconnect
between two CPU clusters. The CBF clock should follow the CPU
frequencies to provide enough bandwidth between clusters. Thus a single
driver implements both a clock and an interconnect to set the clock
rate.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
 .../bindings/clock/qcom,msm8996-cbf.yaml      | 53 +++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/qcom,msm8996-cbf.yaml
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/clock/qcom,msm8996-cbf.yaml b/Documentation/devicetree/bindings/clock/qcom,msm8996-cbf.yaml
new file mode 100644
index 000000000000..3ffe69d8cdd5
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/qcom,msm8996-cbf.yaml
@@ -0,0 +1,53 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/qcom,msm8996-cbf.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm MSM8996 Core Bus Fabric (CBF) clock controller
+
+maintainers:
+  - Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
+
+description: >
+  The clock controller for the Qualcomm MSM8996 CBF clock, which drives the
+  interconnect between two CPU clusters.
+
+properties:
+  compatible:
+    const: qcom,msm8996-cbf
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: XO source
+      - description: SYS APCS AUX clock
+
+  '#clock-cells':
+    const: 0
+
+  '#interconnect-cells':
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - '#clock-cells'
+  - '#interconnect-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/qcom,rpmcc.h>
+    clock-controller@9a11000 {
+        compatible = "qcom,msm8996-cbf";
+        reg = <0x09a11000 0x10000>;
+        clocks = <&rpmcc RPM_SMD_BB_CLK1>, <&apcs_glb>;
+        #clock-cells = <0>;
+        #interconnect-cells = <1>;
+    };
+...