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reset: Add Raspberry Pi 4 firmware reset controller

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Raspberry Pi 4's co-processor controls some of the board's HW
initialization process, but it's up to Linux to trigger it when
relevant. Introduce a reset controller capable of interfacing with
RPi4's co-processor that models these firmware initialization routines as
reset lines.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
This commit is contained in:
Nicolas Saenz Julienne
2020-06-29 18:37:23 +02:00
committed by Matthias Brugger
parent d774da08dc
commit f676eb217b
4 changed files with 85 additions and 0 deletions
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include/dt-bindings/reset/raspberrypi,firmware-reset.h Normal file
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/* 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