[PATCH v7 2/6] dt: bindings: add mt7621-clk device tree binding documentation

Sergio Paracuellos
2021-02-17T11:44:42Z

Adds device tree binding documentation for clocks in the
MT7621 SOC.

Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
---
.../bindings/clock/mediatek,mt7621-clk.yaml | 66 +++++++++++++++++++
1 file changed, 66 insertions(+)
create mode 100644 Documentation/devicetree/bindings/clock/mediatek,mt7621-clk.yaml

diff --git a/Documentation/devicetree/bindings/clock/mediatek,mt7621-clk.yaml b/Documentation/devicetree/bindings/clock/mediatek,mt7621-clk.yaml
new file mode 100644
index 000000000000..842a0f2c9d40
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/mediatek,mt7621-clk.yaml
@@ -0,0 +1,66 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/mediatek,mt7621-clk.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MT7621 Clock Device Tree Bindings
+
+maintainers:
+ - Sergio Paracuellos <sergio.paracuellos@gmail.com>
+
+description: |
+ The MT7621 has a PLL controller from where the cpu clock is provided
+ as well as derived clocks for the bus and the peripherals. It also
+ can gate SoC device clocks.
+
+ 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-clk
+
+ "#clock-cells":
+ description:
+ The first cell indicates the clock number, see [1] for available
+ clocks.
+ const: 1
+
+ ralink,sysctl:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description:
+ phandle of syscon used to control system registers
+
+ ralink,memctl:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description:
+ phandle of syscon used to control memory registers
+
+ clock-output-names:
+ maxItems: 8
+
+required:
+ - compatible
+ - '#clock-cells'
+ - ralink,sysctl
+ - ralink,memctl
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/mt7621-clk.h>
+
+ pll {
+ compatible = "mediatek,mt7621-clk";
+ #clock-cells = <1>;
+ ralink,sysctl = <&sysc>;
+ ralink,memctl = <&memc>;
+ clock-output-names = "xtal", "cpu", "bus",
+ "50m", "125m", "150m",
+ "250m", "270m";
+ };
--
2.25.1