[PATCH v4 1/2] dt-bindings: clock: qcom: Add LPASS VA CSR HeartBeat pulse clock

From: Sarath Ganapathiraju <[email protected]>

Add a binding for the Qualcomm LPASS VA CSR rate generator node that
exposes the lpass_heartbeat_pulse clock on hawi.

The HeartBeat Pulse (also known as RateGen Pulse) synchronizes the
start of the DMAs and Codec Interfaces for the audio usecase and can
serve as a periodic wakeup source for the DSP.

Signed-off-by: Sarath Ganapathiraju <[email protected]>
Reviewed-by: Krzysztof Kozlowski <[email protected]>
---
 .../bindings/clock/qcom,hawi-lpass-va-csr.yaml     | 51 ++++++++++++++++++++++
 1 file changed, 51 insertions(+)

diff --git a/Documentation/devicetree/bindings/clock/qcom,hawi-lpass-va-csr.yaml b/Documentation/devicetree/bindings/clock/qcom,hawi-lpass-va-csr.yaml
new file mode 100644
index 000000000000..9935173d8bee
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/qcom,hawi-lpass-va-csr.yaml
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/qcom,hawi-lpass-va-csr.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm LPASS VA CSR heartbeat pulse clock provider
+
+maintainers:
+  - Srinivas Kandagatla <[email protected]>
+  - Sarath Ganapathiraju <[email protected]>
+
+description:
+  The LPASS (Low Power Audio Subsystem) VA CSR block contains a rate
+  generator that produces a periodic HeartBeat Pulse, also known as
+  the RateGen Pulse. This pulse synchronizes the start of DMAs and
+  Codec Interfaces for audio usecases and can serve as a periodic
+  wakeup source for the DSP.
+
+properties:
+  compatible:
+    enum:
+      - qcom,hawi-lpass-va-csr
+
+  reg:
+    maxItems: 1
+    description: Address and size of the rate generator registers within
+      the VA CSR block.
+
+  "#clock-cells":
+    const: 0
+
+required:
+  - compatible
+  - reg
+  - "#clock-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    soc {
+      #address-cells = <2>;
+      #size-cells = <2>;
+
+      clock-controller@7eed000 {
+        compatible = "qcom,hawi-lpass-va-csr";
+        reg = <0x0 0x07eed000 0x0 0x14>;
+        #clock-cells = <0>;
+      };
+    };

-- 
2.34.1