64 lines
1.8 KiB
Diff
64 lines
1.8 KiB
Diff
From b0682b4ef5d4eb82ee702d8c3f3560349f1a231c Mon Sep 17 00:00:00 2001
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From: Maxime Ripard <maxime@cerno.tech>
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Date: Thu, 13 Feb 2020 17:51:09 +0100
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Subject: [PATCH] dt-bindings: clock: Add a binding for the RPi
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Firmware clocks
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The firmare running on the RPi VideoCore can be used to discover and
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change the various clocks running in the BCM2711. Since devices will
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need to use them through the DT, let's add a pretty simple binding.
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Cc: Michael Turquette <mturquette@baylibre.com>
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Cc: Stephen Boyd <sboyd@kernel.org>
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Cc: Rob Herring <robh+dt@kernel.org>
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Cc: linux-clk@vger.kernel.org
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Cc: devicetree@vger.kernel.org
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Signed-off-by: Maxime Ripard <maxime@cerno.tech>
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---
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.../clock/raspberrypi,firmware-clocks.yaml | 39 +++++++++++++++++++
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1 file changed, 39 insertions(+)
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create mode 100644 Documentation/devicetree/bindings/clock/raspberrypi,firmware-clocks.yaml
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--- /dev/null
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+++ b/Documentation/devicetree/bindings/clock/raspberrypi,firmware-clocks.yaml
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@@ -0,0 +1,39 @@
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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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+%YAML 1.2
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+---
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+$id: http://devicetree.org/schemas/clock/raspberrypi,firmware-clocks.yaml#
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+$schema: http://devicetree.org/meta-schemas/core.yaml#
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+
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+title: RaspberryPi Firmware Clocks Device Tree Bindings
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+
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+maintainers:
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+ - Maxime Ripard <mripard@kernel.org>
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+
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+properties:
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+ "#clock-cells":
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+ const: 1
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+
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+ compatible:
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+ const: raspberrypi,firmware-clocks
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+
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+ raspberrypi,firmware:
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+ $ref: /schemas/types.yaml#/definitions/phandle
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+ description: >
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+ Phandle to the mailbox node to communicate with the firmware.
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+
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+required:
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+ - "#clock-cells"
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+ - compatible
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+ - raspberrypi,firmware
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+
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+additionalProperties: false
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+
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+examples:
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+ - |
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+ firmware_clocks: firmware-clocks {
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+ compatible = "raspberrypi,firmware-clocks";
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+ raspberrypi,firmware = <&firmware>;
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+ #clock-cells = <1>;
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+ };
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+
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+...
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