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@@ -0,0 +1,82 @@
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+/*
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+ * (C) Copyright 2017 Patrice Chotard <patrice.chotard@st.com>
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+ *
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+ * SPDX-License-Identifier: GPL-2.0+
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+ */
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+
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+#include <common.h>
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+#include <dm.h>
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+#include <regmap.h>
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+#include <syscon.h>
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+#include <sysreset.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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+struct sti_sysreset_priv {
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+ phys_addr_t base;
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+};
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+
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+static int sti_sysreset_request(struct udevice *dev, enum sysreset_t type)
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+{
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+ struct sti_sysreset_priv *priv = dev_get_priv(dev);
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+
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+ generic_clear_bit(0, (void __iomem *)priv->base);
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+
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+ return -EINPROGRESS;
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+}
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+
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+static int sti_sysreset_probe(struct udevice *dev)
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+{
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+ struct sti_sysreset_priv *priv = dev_get_priv(dev);
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+ struct udevice *syscon;
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+ struct regmap *regmap;
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+ struct fdtdec_phandle_args syscfg_phandle;
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+ int ret;
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+
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+ /* get corresponding syscon phandle */
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+ ret = fdtdec_parse_phandle_with_args(gd->fdt_blob, dev_of_offset(dev),
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+ "st,syscfg", NULL, 0, 0,
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+ &syscfg_phandle);
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+ if (ret < 0) {
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+ error("Can't get syscfg phandle: %d\n", ret);
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+ return ret;
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+ }
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+
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+ ret = uclass_get_device_by_of_offset(UCLASS_SYSCON,
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+ syscfg_phandle.node,
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+ &syscon);
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+ if (ret) {
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+ error("%s: uclass_get_device_by_of_offset failed: %d\n",
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+ __func__, ret);
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+ return ret;
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+ }
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+
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+ regmap = syscon_get_regmap(syscon);
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+ if (!regmap) {
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+ error("unable to get regmap for %s\n", syscon->name);
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+ return -ENODEV;
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+ }
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+
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+ priv->base = regmap->base;
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+
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+ return 0;
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+}
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+
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+static struct sysreset_ops sti_sysreset = {
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+ .request = sti_sysreset_request,
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+};
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+
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+static const struct udevice_id sti_sysreset_ids[] = {
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+ { .compatible = "st,stih407-restart" },
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+ { }
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+};
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+
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+U_BOOT_DRIVER(sysreset_sti) = {
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+ .name = "sysreset_sti",
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+ .id = UCLASS_SYSRESET,
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+ .ops = &sti_sysreset,
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+ .probe = sti_sysreset_probe,
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+ .of_match = sti_sysreset_ids,
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+ .priv_auto_alloc_size = sizeof(struct sti_sysreset_priv),
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+};
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