[PATCH 06/89] dt-bindings: clock: Add a binding for the RPi Firmware clocks

[Maxime Ripard]

The firmare running on the RPi VideoCore can be used to discover and
change the various clocks running in the BCM2711. Since devices will
need to use them through the DT, let's add a pretty simple binding.

Cc: Michael Turquette <mturquette at baylibre.com>
Cc: Stephen Boyd <sboyd at kernel.org>
Cc: Rob Herring <robh+dt at kernel.org>
Cc: linux-clk at vger.kernel.org
Cc: devicetree at vger.kernel.org
Signed-off-by: Maxime Ripard <maxime at cerno.tech>
---
 Documentation/devicetree/bindings/clock/raspberrypi,firmware-clocks.yaml | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/raspberrypi,firmware-clocks.yaml

diff --git a/Documentation/devicetree/bindings/clock/raspberrypi,firmware-clocks.yaml b/Documentation/devicetree/bindings/clock/raspberrypi,firmware-clocks.yaml
new file mode 100644
index 000000000000..d37bc311321d
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/raspberrypi,firmware-clocks.yaml
@@ -0,0 +1,39 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/raspberrypi,firmware-clocks.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: RaspberryPi Firmware Clocks Device Tree Bindings
+
+maintainers:
+  - Maxime Ripard <mripard at kernel.org>
+
+properties:
+  "#clock-cells":
+    const: 1
+
+  compatible:
+    const: raspberrypi,firmware-clocks
+
+  raspberrypi,firmware:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: >
+      Phandle to the mailbox node to communicate with the firmware.
+
+required:
+  - "#clock-cells"
+  - compatible
+  - raspberrypi,firmware
+
+additionalProperties: false
+
+examples:
+  - |
+    firmware_clocks: firmware-clocks {
+        compatible = "raspberrypi,firmware-clocks";
+        raspberrypi,firmware = <&firmware>;
+        #clock-cells = <1>;
+    };
+
+...
-- 
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