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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright (C) 2019 Marvell International Ltd.
- *
- * https://spdx.org/licenses
- */
- #include <dm.h>
- #include <errno.h>
- #include <wdt.h>
- #include <asm/io.h>
- DECLARE_GLOBAL_DATA_PTR;
- #define CORE0_POKE_OFFSET 0x50000
- #define CORE0_POKE_OFFSET_MASK 0xfffffULL
- struct octeontx_wdt {
- void __iomem *reg;
- };
- static int octeontx_wdt_reset(struct udevice *dev)
- {
- struct octeontx_wdt *priv = dev_get_priv(dev);
- writeq(~0ULL, priv->reg);
- return 0;
- }
- static int octeontx_wdt_probe(struct udevice *dev)
- {
- struct octeontx_wdt *priv = dev_get_priv(dev);
- priv->reg = dev_remap_addr(dev);
- if (!priv->reg)
- return -EINVAL;
- /*
- * Save core poke register address in reg (its not 0xa0000 as
- * extracted from the DT but 0x50000 instead)
- */
- priv->reg = (void __iomem *)(((u64)priv->reg &
- ~CORE0_POKE_OFFSET_MASK) |
- CORE0_POKE_OFFSET);
- return 0;
- }
- static const struct wdt_ops octeontx_wdt_ops = {
- .reset = octeontx_wdt_reset,
- };
- static const struct udevice_id octeontx_wdt_ids[] = {
- { .compatible = "arm,sbsa-gwdt" },
- {}
- };
- U_BOOT_DRIVER(wdt_octeontx) = {
- .name = "wdt_octeontx",
- .id = UCLASS_WDT,
- .of_match = octeontx_wdt_ids,
- .ops = &octeontx_wdt_ops,
- .priv_auto_alloc_size = sizeof(struct octeontx_wdt),
- .probe = octeontx_wdt_probe,
- };
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