sysreset: socfpga: stratix10: add sysreset driver

This adds a UCLASS_SYSRESET sysreset driver for socfgpa stratix10.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
diff --git a/drivers/sysreset/Kconfig b/drivers/sysreset/Kconfig
index 6b4bec1..024404d 100644
--- a/drivers/sysreset/Kconfig
+++ b/drivers/sysreset/Kconfig
@@ -61,6 +61,13 @@
 	  This enables the system reset driver support for Intel SOCFPGA SoCs
 	  (Cyclone 5, Arria 5 and Arria 10).
 
+config SYSRESET_SOCFPGA_S10
+	bool "Enable support for Intel SOCFPGA Stratix 10"
+	depends on ARCH_SOCFPGA && TARGET_SOCFPGA_STRATIX10
+	help
+	  This enables the system reset driver support for Intel SOCFPGA
+	  Stratix SoCs.
+
 config SYSRESET_TI_SCI
 	bool "TI System Control Interface (TI SCI) system reset driver"
 	depends on TI_SCI_PROTOCOL
diff --git a/drivers/sysreset/Makefile b/drivers/sysreset/Makefile
index 180e463..cf01492 100644
--- a/drivers/sysreset/Makefile
+++ b/drivers/sysreset/Makefile
@@ -12,6 +12,7 @@
 obj-$(CONFIG_SYSRESET_MICROBLAZE) += sysreset_microblaze.o
 obj-$(CONFIG_SYSRESET_PSCI) += sysreset_psci.o
 obj-$(CONFIG_SYSRESET_SOCFPGA) += sysreset_socfpga.o
+obj-$(CONFIG_SYSRESET_SOCFPGA_S10) += sysreset_socfpga_s10.o
 obj-$(CONFIG_SYSRESET_TI_SCI) += sysreset-ti-sci.o
 obj-$(CONFIG_SYSRESET_SYSCON) += sysreset_syscon.o
 obj-$(CONFIG_SYSRESET_WATCHDOG) += sysreset_watchdog.o
diff --git a/drivers/sysreset/sysreset_socfpga_s10.c b/drivers/sysreset/sysreset_socfpga_s10.c
new file mode 100644
index 0000000..9837aad
--- /dev/null
+++ b/drivers/sysreset/sysreset_socfpga_s10.c
@@ -0,0 +1,29 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019 Pepperl+Fuchs
+ * Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <sysreset.h>
+#include <asm/arch/mailbox_s10.h>
+
+static int socfpga_sysreset_request(struct udevice *dev,
+				    enum sysreset_t type)
+{
+	puts("Mailbox: Issuing mailbox cmd REBOOT_HPS\n");
+	mbox_reset_cold();
+	return -EINPROGRESS;
+}
+
+static struct sysreset_ops socfpga_sysreset = {
+	.request = socfpga_sysreset_request,
+};
+
+U_BOOT_DRIVER(sysreset_socfpga) = {
+	.id	= UCLASS_SYSRESET,
+	.name	= "socfpga_sysreset",
+	.ops	= &socfpga_sysreset,
+};