1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com> 4 * 5 * Reset driver for tangier processor 6 */ 7 8 #include <common.h> 9 #include <dm.h> 10 #include <sysreset.h> 11 #include <asm/scu.h> 12 13 static int tangier_sysreset_request(struct udevice *dev, enum sysreset_t type) 14 { 15 int value; 16 17 switch (type) { 18 case SYSRESET_WARM: 19 value = IPCMSG_WARM_RESET; 20 break; 21 case SYSRESET_COLD: 22 value = IPCMSG_COLD_RESET; 23 break; 24 default: 25 return -ENOSYS; 26 } 27 28 scu_ipc_simple_command(value, 0); 29 30 return -EINPROGRESS; 31 } 32 33 static const struct udevice_id tangier_sysreset_ids[] = { 34 { .compatible = "intel,reset-tangier" }, 35 { } 36 }; 37 38 static struct sysreset_ops tangier_sysreset_ops = { 39 .request = tangier_sysreset_request, 40 }; 41 42 U_BOOT_DRIVER(tangier_sysreset) = { 43 .name = "tangier-sysreset", 44 .id = UCLASS_SYSRESET, 45 .of_match = tangier_sysreset_ids, 46 .ops = &tangier_sysreset_ops, 47 }; 48