1// SPDX-License-Identifier: GPL-2.0 2/* 3 * Copyright (c) 2016, NVIDIA CORPORATION. 4 */ 5 6#include <common.h> 7#include <dm.h> 8#include <log.h> 9#include <malloc.h> 10#include <misc.h> 11#include <reset-uclass.h> 12#include <asm/arch-tegra/bpmp_abi.h> 13 14static int tegra186_reset_common(struct reset_ctl *reset_ctl, 15 enum mrq_reset_commands cmd) 16{ 17 struct mrq_reset_request req; 18 int ret; 19 20 req.cmd = cmd; 21 req.reset_id = reset_ctl->id; 22 23 ret = misc_call(reset_ctl->dev->parent, MRQ_RESET, &req, sizeof(req), 24 NULL, 0); 25 if (ret < 0) 26 return ret; 27 28 return 0; 29} 30 31static int tegra186_reset_assert(struct reset_ctl *reset_ctl) 32{ 33 debug("%s(reset_ctl=%p) (dev=%p, id=%lu)\n", __func__, reset_ctl, 34 reset_ctl->dev, reset_ctl->id); 35 36 return tegra186_reset_common(reset_ctl, CMD_RESET_ASSERT); 37} 38 39static int tegra186_reset_deassert(struct reset_ctl *reset_ctl) 40{ 41 debug("%s(reset_ctl=%p) (dev=%p, id=%lu)\n", __func__, reset_ctl, 42 reset_ctl->dev, reset_ctl->id); 43 44 return tegra186_reset_common(reset_ctl, CMD_RESET_DEASSERT); 45} 46 47struct reset_ops tegra186_reset_ops = { 48 .rst_assert = tegra186_reset_assert, 49 .rst_deassert = tegra186_reset_deassert, 50}; 51 52U_BOOT_DRIVER(tegra186_reset) = { 53 .name = "tegra186_reset", 54 .id = UCLASS_RESET, 55 .ops = &tegra186_reset_ops, 56}; 57