1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2019 Pepperl+Fuchs
4 * Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
12 #include <asm/arch/reset_manager.h>
13 #include <linux/bitops.h>
15 struct socfpga_sysreset_data {
16 void __iomem *rstmgr_base;
19 static int socfpga_sysreset_request(struct udevice *dev,
22 struct socfpga_sysreset_data *data = dev_get_priv(dev);
26 writel(BIT(RSTMGR_CTRL_SWWARMRSTREQ_LSB),
27 data->rstmgr_base + RSTMGR_CTRL);
30 writel(BIT(RSTMGR_CTRL_SWCOLDRSTREQ_LSB),
31 data->rstmgr_base + RSTMGR_CTRL);
34 return -EPROTONOSUPPORT;
39 static int socfpga_sysreset_probe(struct udevice *dev)
41 struct socfpga_sysreset_data *data = dev_get_priv(dev);
43 data->rstmgr_base = devfdt_get_addr_ptr(dev);
47 static struct sysreset_ops socfpga_sysreset = {
48 .request = socfpga_sysreset_request,
51 U_BOOT_DRIVER(sysreset_socfpga) = {
52 .id = UCLASS_SYSRESET,
53 .name = "socfpga_sysreset",
54 .priv_auto_alloc_size = sizeof(struct socfpga_sysreset_data),
55 .ops = &socfpga_sysreset,
56 .probe = socfpga_sysreset_probe,