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

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Message-Id: <9166f3acdc2a64e3f3ca1cd2e283005ee2df37c9.1582533919.git-series.maxime@cerno.tech>
Date:   Mon, 24 Feb 2020 10:06:08 +0100
From:   Maxime Ripard <maxime@...no.tech>
To:     Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        Eric Anholt <eric@...olt.net>
Cc:     dri-devel@...ts.freedesktop.org,
        linux-rpi-kernel@...ts.infradead.org,
        bcm-kernel-feedback-list@...adcom.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Dave Stevenson <dave.stevenson@...pberrypi.com>,
        Tim Gover <tim.gover@...pberrypi.com>,
        Phil Elwell <phil@...pberrypi.com>,
        Maxime Ripard <maxime@...no.tech>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Rob Herring <robh+dt@...nel.org>, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: [PATCH 06/89] dt-bindings: clock: Add a binding for the RPi Firmware clocks

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@...libre.com>
Cc: Stephen Boyd <sboyd@...nel.org>
Cc: Rob Herring <robh+dt@...nel.org>
Cc: linux-clk@...r.kernel.org
Cc: devicetree@...r.kernel.org
Signed-off-by: Maxime Ripard <maxime@...no.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@...nel.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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