[PATCH 2/7] dt: bindings: add mt7621-pll device tree binding documentation

[Sergio Paracuellos <sergio.paracuellos@gmail.com>]

Adds device tree binding documentation for PLL controller in
the MT7621 SOC.

Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
---
 .../bindings/clock/mediatek,mt7621-pll.yaml   | 51 +++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/mediatek,mt7621-pll.yaml

diff --git a/Documentation/devicetree/bindings/clock/mediatek,mt7621-pll.yaml b/Documentation/devicetree/bindings/clock/mediatek,mt7621-pll.yaml
new file mode 100644
index 000000000000..ef58411065e4
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/mediatek,mt7621-pll.yaml
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/mediatek,mt7621-pll.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MT7621 PLL Controller Device Tree Bindings
+
+maintainers:
+  - Sergio Paracuellos <sergio.paracuellos@gmail.com>
+
+
+description: |
+  The PLL Controller provides the cpu clock as well as derived
+  clock for the bus and the peripherals.
+
+  Each clock is assigned an identifier and client nodes use this identifier
+  to specify the clock which they consume.
+
+  All these identifiers could be found in:
+  [1]: <include/dt-bindings/clock/mt7621-clk.h>.
+
+properties:
+  compatible:
+    const: mediatek,mt7621-pll
+
+  "#clock-cells":
+    description:
+      The first cell indicates the clock number, see [1] for available
+      clocks.
+    const: 1
+
+  clock-output-names:
+    maxItems: 3
+
+required:
+  - compatible
+  - '#clock-cells'
+  - clock-output-names
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/mt7621-clk.h>
+
+    pll {
+      compatible = "mediatek,mt7621-pll";
+      #clock-cells = <1>;
+      clock-output-names = "cpu", "ahb", "apb";
+    };
-- 
2.25.1