[PATCH v3 1/9] dt-bindings: reset: Add a binding for the RPi Firmware reset controller
From: Nicolas Saenz Julienne <hidden>
Date: 2020-06-12 17:14:42
Also in:
linux-devicetree, linux-pci, linux-usb, lkml
Subsystem:
open firmware and flattened device tree bindings, reset controller framework, the rest · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Philipp Zabel, Linus Torvalds
The firmware running on the RPi VideoCore can be used to reset and initialize HW controlled by the firmware. Signed-off-by: Nicolas Saenz Julienne <redacted> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> --- Changes since v2: - Add include file for reset IDs Changes since v1: - Correct cells binding as per Florian's comment - Change compatible string to be more generic .../arm/bcm/raspberrypi,bcm2835-firmware.yaml | 21 +++++++++++++++++++ .../reset/raspberrypi,firmware-reset.h | 13 ++++++++++++ 2 files changed, 34 insertions(+) create mode 100644 include/dt-bindings/reset/raspberrypi,firmware-reset.h
diff --git a/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml b/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml
index b48ed875eb8e..23a885af3a28 100644
--- a/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml
+++ b/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml@@ -39,6 +39,22 @@ properties: - compatible - "#clock-cells" + reset: + type: object + + properties: + compatible: + const: raspberrypi,firmware-reset + + "#reset-cells": + const: 1 + description: > + The argument is the ID of the firmware reset line to affect. + + required: + - compatible + - "#reset-cells" + additionalProperties: false required:
@@ -55,5 +71,10 @@ examples: compatible = "raspberrypi,firmware-clocks"; #clock-cells = <1>; }; + + reset: reset { + compatible = "raspberrypi,firmware-reset"; + #reset-cells = <1>; + }; }; ...
diff --git a/include/dt-bindings/reset/raspberrypi,firmware-reset.h b/include/dt-bindings/reset/raspberrypi,firmware-reset.h
new file mode 100644
index 000000000000..1a4f4c792723
--- /dev/null
+++ b/include/dt-bindings/reset/raspberrypi,firmware-reset.h@@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2020 Nicolas Saenz Julienne + * Author: Nicolas Saenz Julienne <nsaenzjulienne@suse.com> + */ + +#ifndef _DT_BINDINGS_RASPBERRYPI_FIRMWARE_RESET_H +#define _DT_BINDINGS_RASPBERRYPI_FIRMWARE_RESET_H + +#define RASPBERRYPI_FIRMWARE_RESET_ID_USB 0 +#define RASPBERRYPI_FIRMWARE_RESET_NUM_IDS 1 + +#endif
--
2.26.2
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