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Message-Id: <69e869b0a79ea17f2cdb79df986409963672495a.1587742492.git-series.maxime@cerno.tech>
Date:   Fri, 24 Apr 2020 17:33:44 +0200
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 v2 03/91] dt-bindings: clock: Add a binding for the RPi Firmware clocks

The firmware 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/arm/bcm/raspberrypi,bcm2835-firmware.yaml | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml b/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml
index cec540c052b6..b48ed875eb8e 100644
--- a/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml
+++ b/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml
@@ -22,6 +22,25 @@ properties:
       Phandle to the firmware device's Mailbox.
       (See: ../mailbox/mailbox.txt for more information)
 
+  clocks:
+    type: object
+
+    properties:
+      compatible:
+        const: raspberrypi,firmware-clocks
+
+      "#clock-cells":
+        const: 1
+        description: >
+          The argument is the ID of the clocks contained by the
+          firmware messages.
+
+    required:
+      - compatible
+      - "#clock-cells"
+
+    additionalProperties: false
+
 required:
   - compatible
   - mboxes
@@ -31,5 +50,10 @@ examples:
     firmware {
         compatible = "raspberrypi,bcm2835-firmware", "simple-bus";
         mboxes = <&mailbox>;
+
+        firmware_clocks: clocks {
+            compatible = "raspberrypi,firmware-clocks";
+            #clock-cells = <1>;
+        };
     };
 ...
-- 
git-series 0.9.1

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