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@@ -0,0 +1,66 @@
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+// SPDX-License-Identifier: GPL-2.0+
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+/*
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+ * Copyright (C) 2019 Marvell International Ltd.
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+ *
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+ * https://spdx.org/licenses
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+ */
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+
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+#include <dm.h>
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+#include <errno.h>
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+#include <wdt.h>
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+#include <asm/io.h>
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+
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+DECLARE_GLOBAL_DATA_PTR;
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+
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+#define CORE0_POKE_OFFSET 0x50000
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+#define CORE0_POKE_OFFSET_MASK 0xfffffULL
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+
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+struct octeontx_wdt {
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+ void __iomem *reg;
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+};
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+
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+static int octeontx_wdt_reset(struct udevice *dev)
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+{
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+ struct octeontx_wdt *priv = dev_get_priv(dev);
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+
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+ writeq(~0ULL, priv->reg);
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+
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+ return 0;
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+}
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+
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+static int octeontx_wdt_probe(struct udevice *dev)
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+{
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+ struct octeontx_wdt *priv = dev_get_priv(dev);
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+
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+ priv->reg = dev_remap_addr(dev);
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+ if (!priv->reg)
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+ return -EINVAL;
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+
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+ /*
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+ * Save core poke register address in reg (its not 0xa0000 as
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+ * extracted from the DT but 0x50000 instead)
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+ */
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+ priv->reg = (void __iomem *)(((u64)priv->reg &
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+ ~CORE0_POKE_OFFSET_MASK) |
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+ CORE0_POKE_OFFSET);
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+
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+ return 0;
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+}
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+
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+static const struct wdt_ops octeontx_wdt_ops = {
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+ .reset = octeontx_wdt_reset,
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+};
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+
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+static const struct udevice_id octeontx_wdt_ids[] = {
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+ { .compatible = "arm,sbsa-gwdt" },
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+ {}
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+};
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+
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+U_BOOT_DRIVER(wdt_octeontx) = {
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+ .name = "wdt_octeontx",
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+ .id = UCLASS_WDT,
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+ .of_match = octeontx_wdt_ids,
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+ .ops = &octeontx_wdt_ops,
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+ .priv_auto_alloc_size = sizeof(struct octeontx_wdt),
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+ .probe = octeontx_wdt_probe,
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+};
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