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- // SPDX-License-Identifier: GPL-2.0
- /*
- * Copyright (C) 2019 Pepperl+Fuchs
- * Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
- */
- #include <common.h>
- #include <dm.h>
- #include <errno.h>
- #include <sysreset.h>
- #include <asm/io.h>
- #include <asm/arch/reset_manager.h>
- #include <linux/bitops.h>
- struct socfpga_sysreset_data {
- void __iomem *rstmgr_base;
- };
- static int socfpga_sysreset_request(struct udevice *dev,
- enum sysreset_t type)
- {
- struct socfpga_sysreset_data *data = dev_get_priv(dev);
- switch (type) {
- case SYSRESET_WARM:
- writel(BIT(RSTMGR_CTRL_SWWARMRSTREQ_LSB),
- data->rstmgr_base + RSTMGR_CTRL);
- break;
- case SYSRESET_COLD:
- writel(BIT(RSTMGR_CTRL_SWCOLDRSTREQ_LSB),
- data->rstmgr_base + RSTMGR_CTRL);
- break;
- default:
- return -EPROTONOSUPPORT;
- }
- return -EINPROGRESS;
- }
- static int socfpga_sysreset_probe(struct udevice *dev)
- {
- struct socfpga_sysreset_data *data = dev_get_priv(dev);
- data->rstmgr_base = dev_read_addr_ptr(dev);
- return 0;
- }
- static struct sysreset_ops socfpga_sysreset = {
- .request = socfpga_sysreset_request,
- };
- U_BOOT_DRIVER(sysreset_socfpga) = {
- .id = UCLASS_SYSRESET,
- .name = "socfpga_sysreset",
- .priv_auto_alloc_size = sizeof(struct socfpga_sysreset_data),
- .ops = &socfpga_sysreset,
- .probe = socfpga_sysreset_probe,
- };
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