dt-bindings: clock: Add LPASSCC and reset controller for SC8280XP

The LPASS (Low Power Audio Subsystem) clock controller provides reset
support when it is under the control of Q6DSP.

Add support for those resets and adds IDs for clients to request the reset.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Johan Hovold <johan+linaro@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230608125315.11454-2-srinivas.kandagatla@linaro.org

diff --git a/Documentation/devicetree/bindings/clock/qcom,sc8280xp-lpasscc.yaml b/Documentation/devicetree/bindings/clock/qcom,sc8280xp-lpasscc.yaml
new file mode 100644 (file)
index 0000000..047cae9
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/qcom,sc8280xp-lpasscc.yaml
@@ -0,0 +1,50 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/qcom,sc8280xp-lpasscc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm LPASS Core & Audio Clock Controller on SC8280XP
+
+maintainers:
+  - Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
+
+description: |
+  Qualcomm LPASS core and audio clock control module provides the clocks,
+  and reset on SC8280XP.
+
+  See also::
+    include/dt-bindings/clock/qcom,lpasscc-sc8280xp.h
+
+properties:
+  compatible:
+    enum:
+      - qcom,sc8280xp-lpasscc
+
+  reg:
+    maxItems: 1
+
+  '#clock-cells':
+    const: 1
+
+  '#reset-cells':
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - '#clock-cells'
+  - '#reset-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/qcom,sc8280xp-lpasscc.h>
+    lpasscc: clock-controller@33e0000 {
+        compatible = "qcom,sc8280xp-lpasscc";
+        reg = <0x033e0000 0x12000>;
+        #clock-cells = <1>;
+        #reset-cells = <1>;
+    };
+...

diff --git a/include/dt-bindings/clock/qcom,sc8280xp-lpasscc.h b/include/dt-bindings/clock/qcom,sc8280xp-lpasscc.h
new file mode 100644 (file)
index 0000000..df800ea
--- /dev/null
+++ b/include/dt-bindings/clock/qcom,sc8280xp-lpasscc.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
+/*
+ * Copyright (c) 2023, Linaro Ltd.
+ */
+
+#ifndef _DT_BINDINGS_CLK_QCOM_LPASSCC_SC8280XP_H
+#define _DT_BINDINGS_CLK_QCOM_LPASSCC_SC8280XP_H
+
+/* LPASS TCSR */
+#define LPASS_AUDIO_SWR_TX_CGCR                                0
+
+#endif