dt-bindings: clock: qcom: document SAR2130P Global Clock Controller

Add bindings for the Global Clock Controller (GCC) present on the
Qualcomm SAR2130P platform.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20241027-sar2130p-clocks-v5-2-ecad2a1432ba@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

Documentation/devicetree/bindings/clock/qcom,sar2130p-gcc.yaml

@@ -0,0 +1,65 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/qcom,sar2130p-gcc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Global Clock & Reset Controller on sar2130p
+
+maintainers:
+  - Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
+
+description: |
+  Qualcomm global clock control module provides the clocks, resets and
+  power domains on sar2130p.
+
+  See also: include/dt-bindings/clock/qcom,sar2130p-gcc.h
+
+properties:
+  compatible:
+    const: qcom,sar2130p-gcc
+
+  clocks:
+    items:
+      - description: XO reference clock
+      - description: Sleep clock
+      - description: PCIe 0 pipe clock
+      - description: PCIe 1 pipe clock
+      - description: Primary USB3 PHY wrapper pipe clock
+
+  protected-clocks:
+    maxItems: 240
+
+  power-domains:
+    maxItems: 1
+
+required:
+  - compatible
+  - clocks
+  - '#power-domain-cells'
+
+allOf:
+  - $ref: qcom,gcc.yaml#
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/qcom,rpmh.h>
+    #include <dt-bindings/power/qcom,rpmhpd.h>
+
+    gcc: clock-controller@100000 {
+        compatible = "qcom,sar2130p-gcc";
+        reg = <0x100000 0x1f4200>;
+        clocks = <&rpmhcc RPMH_CXO_CLK>,
+                 <&sleep_clk>,
+                 <&pcie_0_pipe_clk>,
+                 <&pcie_1_pipe_clk>,
+                 <&usb_0_ssphy>;
+        power-domains = <&rpmhpd RPMHPD_CX>;
+
+        #clock-cells = <1>;
+        #reset-cells = <1>;
+        #power-domain-cells = <1>;
+    };
+...