From af1a266670d040d2f4083ff309d732d648afba2a Mon Sep 17 00:00:00 2001
From: Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com>
Date: Tue, 10 Oct 2023 14:33:42 +0000
Subject: Add submodule dependency files
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
---
roms/u-boot/drivers/sysreset/sysreset_sti.c | 84 +++++++++++++++++++++++++++++
1 file changed, 84 insertions(+)
create mode 100644 roms/u-boot/drivers/sysreset/sysreset_sti.c
(limited to 'roms/u-boot/drivers/sysreset/sysreset_sti.c')
diff --git a/roms/u-boot/drivers/sysreset/sysreset_sti.c b/roms/u-boot/drivers/sysreset/sysreset_sti.c
new file mode 100644
index 000000000..f0f445f22
--- /dev/null
+++ b/roms/u-boot/drivers/sysreset/sysreset_sti.c
@@ -0,0 +1,84 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2017, STMicroelectronics - All Rights Reserved
+ * Author(s): Patrice Chotard, <patrice.chotard@foss.st.com> for STMicroelectronics.
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <regmap.h>
+#include <syscon.h>
+#include <sysreset.h>
+#include <asm/global_data.h>
+#include <asm/io.h>
+#include <linux/bitops.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+struct sti_sysreset_priv {
+ phys_addr_t base;
+};
+
+static int sti_sysreset_request(struct udevice *dev, enum sysreset_t type)
+{
+ struct sti_sysreset_priv *priv = dev_get_priv(dev);
+
+ generic_clear_bit(0, (void __iomem *)priv->base);
+
+ return -EINPROGRESS;
+}
+
+static int sti_sysreset_probe(struct udevice *dev)
+{
+ struct sti_sysreset_priv *priv = dev_get_priv(dev);
+ struct udevice *syscon;
+ struct regmap *regmap;
+ struct fdtdec_phandle_args syscfg_phandle;
+ int ret;
+
+ /* get corresponding syscon phandle */
+ ret = fdtdec_parse_phandle_with_args(gd->fdt_blob, dev_of_offset(dev),
+ "st,syscfg", NULL, 0, 0,
+ &syscfg_phandle);
+ if (ret < 0) {
+ pr_err("Can't get syscfg phandle: %d\n", ret);
+ return ret;
+ }
+
+ ret = uclass_get_device_by_of_offset(UCLASS_SYSCON,
+ syscfg_phandle.node,
+ &syscon);
+ if (ret) {
+ pr_err("%s: uclass_get_device_by_of_offset failed: %d\n",
+ __func__, ret);
+ return ret;
+ }
+
+ regmap = syscon_get_regmap(syscon);
+ if (!regmap) {
+ pr_err("unable to get regmap for %s\n", syscon->name);
+ return -ENODEV;
+ }
+
+ priv->base = regmap->ranges[0].start;
+
+ return 0;
+}
+
+static struct sysreset_ops sti_sysreset = {
+ .request = sti_sysreset_request,
+};
+
+static const struct udevice_id sti_sysreset_ids[] = {
+ { .compatible = "st,stih407-restart" },
+ { }
+};
+
+U_BOOT_DRIVER(sysreset_sti) = {
+ .name = "sysreset_sti",
+ .id = UCLASS_SYSRESET,
+ .ops = &sti_sysreset,
+ .probe = sti_sysreset_probe,
+ .of_match = sti_sysreset_ids,
+ .priv_auto = sizeof(struct sti_sysreset_priv),
+};
--
cgit