sysreset: Add Octeon sysreset driver
This patch adds a UCLASS_SYSRESET sysreset driver for the Octeon SoC
family.
Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
diff --git a/drivers/sysreset/sysreset_octeon.c b/drivers/sysreset/sysreset_octeon.c
new file mode 100644
index 0000000..a05dac3
--- /dev/null
+++ b/drivers/sysreset/sysreset_octeon.c
@@ -0,0 +1,52 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2020 Stefan Roese <sr@denx.de>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <sysreset.h>
+#include <asm/io.h>
+
+#define RST_SOFT_RST 0x0080
+
+struct octeon_sysreset_data {
+ void __iomem *base;
+};
+
+static int octeon_sysreset_request(struct udevice *dev, enum sysreset_t type)
+{
+ struct octeon_sysreset_data *data = dev_get_priv(dev);
+
+ writeq(1, data->base + RST_SOFT_RST);
+
+ return -EINPROGRESS;
+}
+
+static int octeon_sysreset_probe(struct udevice *dev)
+{
+ struct octeon_sysreset_data *data = dev_get_priv(dev);
+
+ data->base = dev_remap_addr(dev);
+
+ return 0;
+}
+
+static struct sysreset_ops octeon_sysreset = {
+ .request = octeon_sysreset_request,
+};
+
+static const struct udevice_id octeon_sysreset_ids[] = {
+ { .compatible = "mrvl,cn7xxx-rst" },
+ { }
+};
+
+U_BOOT_DRIVER(sysreset_octeon) = {
+ .id = UCLASS_SYSRESET,
+ .name = "octeon_sysreset",
+ .priv_auto_alloc_size = sizeof(struct octeon_sysreset_data),
+ .ops = &octeon_sysreset,
+ .probe = octeon_sysreset_probe,
+ .of_match = octeon_sysreset_ids,
+};