f5ff224358
* Bump Raspberry Pi kernel to 5.4 Bump kernel to the downstream Raspberry Pi 5.4 kernel. Drop patches already merged upstream and use rebased patches for USB reset controller (required for U-Boot 2020.10 for USB SSD boot). * Add compatible node for upstream U-Boot Add brcm,bcm2835-pl011 to make upstream U-Boot bind with the bcm283x_pl011 driver. This allows to boot with the device tree provided by the Raspberry Pi Linux kernel 5.4 even without enable_uart=1.
72 lines
2.5 KiB
Diff
72 lines
2.5 KiB
Diff
From 3ad7fb9329eabd1d7f692f612742ca5ac38854a5 Mon Sep 17 00:00:00 2001
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Message-Id: <3ad7fb9329eabd1d7f692f612742ca5ac38854a5.1604762912.git.stefan@agner.ch>
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In-Reply-To: <3651b4af52d63d4e37f40c7a6d0809b0a6c9dd73.1604762912.git.stefan@agner.ch>
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References: <3651b4af52d63d4e37f40c7a6d0809b0a6c9dd73.1604762912.git.stefan@agner.ch>
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From: Maxime Ripard <maxime@cerno.tech>
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Date: Mon, 15 Jun 2020 10:40:42 +0200
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Subject: [PATCH 2/8] dt-bindings: clock: Add a binding for the RPi Firmware
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clocks
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The firmware 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: linux-clk@vger.kernel.org
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Cc: devicetree@vger.kernel.org
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Reviewed-by: Stephen Boyd <sboyd@kernel.org>
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Reviewed-by: Rob Herring <robh+dt@kernel.org>
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Tested-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
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Signed-off-by: Maxime Ripard <maxime@cerno.tech>
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Link: https://lore.kernel.org/r/f6105207e7ef5a5ea8d7a1774faf989d341a25f5.1592210452.git-series.maxime@cerno.tech
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Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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(cherry picked from commit 74a0caa5ef1c25905c4409b350ed9a8e0d9a3b74)
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---
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.../arm/bcm/raspberrypi,bcm2835-firmware.yaml | 24 +++++++++++++++++++
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1 file changed, 24 insertions(+)
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diff --git a/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml b/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml
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index cec540c052b6..b48ed875eb8e 100644
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--- a/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml
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+++ b/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml
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@@ -22,6 +22,25 @@ properties:
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Phandle to the firmware device's Mailbox.
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(See: ../mailbox/mailbox.txt for more information)
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+ clocks:
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+ type: object
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+
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+ properties:
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+ compatible:
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+ const: raspberrypi,firmware-clocks
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+
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+ "#clock-cells":
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+ const: 1
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+ description: >
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+ The argument is the ID of the clocks contained by the
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+ firmware messages.
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+
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+ required:
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+ - compatible
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+ - "#clock-cells"
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+
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+ additionalProperties: false
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+
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required:
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- compatible
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- mboxes
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@@ -31,5 +50,10 @@ examples:
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firmware {
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compatible = "raspberrypi,bcm2835-firmware", "simple-bus";
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mboxes = <&mailbox>;
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+
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+ firmware_clocks: clocks {
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+ compatible = "raspberrypi,firmware-clocks";
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+ #clock-cells = <1>;
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+ };
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};
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...
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--
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2.29.1
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