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.
84 lines
2.9 KiB
Diff
84 lines
2.9 KiB
Diff
From 33743cfcff296b1011e46168ecab185a00e0f00d Mon Sep 17 00:00:00 2001
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Message-Id: <33743cfcff296b1011e46168ecab185a00e0f00d.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: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
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Date: Mon, 29 Jun 2020 18:18:37 +0200
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Subject: [PATCH 4/8] dt-bindings: reset: Add a binding for the RPi Firmware
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reset controller
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The firmware running on the RPi VideoCore can be used to reset and
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initialize HW controlled by the firmware.
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Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
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Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
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Link: https://lore.kernel.org/r/20200629161845.6021-2-nsaenzjulienne@suse.de
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Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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(cherry picked from commit 242841992ae6f22bd761add2f380b2ef3271ba9a)
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---
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.../arm/bcm/raspberrypi,bcm2835-firmware.yaml | 21 +++++++++++++++++++
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.../reset/raspberrypi,firmware-reset.h | 13 ++++++++++++
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2 files changed, 34 insertions(+)
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create mode 100644 include/dt-bindings/reset/raspberrypi,firmware-reset.h
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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 17e4f20c8d39..c78499a41c72 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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@@ -48,6 +48,22 @@ properties:
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- compatible
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- "#clock-cells"
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+ reset:
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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-reset
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+
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+ "#reset-cells":
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+ const: 1
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+ description: >
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+ The argument is the ID of the firmware reset line to affect.
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+
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+ required:
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+ - compatible
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+ - "#reset-cells"
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+
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additionalProperties: false
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required:
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@@ -64,5 +80,10 @@ examples:
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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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+ reset: reset {
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+ compatible = "raspberrypi,firmware-reset";
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+ #reset-cells = <1>;
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+ };
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};
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...
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diff --git a/include/dt-bindings/reset/raspberrypi,firmware-reset.h b/include/dt-bindings/reset/raspberrypi,firmware-reset.h
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new file mode 100644
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index 000000000000..1a4f4c792723
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--- /dev/null
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+++ b/include/dt-bindings/reset/raspberrypi,firmware-reset.h
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@@ -0,0 +1,13 @@
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+/* SPDX-License-Identifier: GPL-2.0 */
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+/*
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+ * Copyright (c) 2020 Nicolas Saenz Julienne
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+ * Author: Nicolas Saenz Julienne <nsaenzjulienne@suse.com>
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+ */
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+
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+#ifndef _DT_BINDINGS_RASPBERRYPI_FIRMWARE_RESET_H
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+#define _DT_BINDINGS_RASPBERRYPI_FIRMWARE_RESET_H
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+
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+#define RASPBERRYPI_FIRMWARE_RESET_ID_USB 0
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+#define RASPBERRYPI_FIRMWARE_RESET_NUM_IDS 1
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+
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+#endif
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--
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2.29.1
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