1 files changed, 50 insertions, 0 deletions
diff --git a/arch/arm/mach-keystone/pm_domain.c b/arch/arm/mach-keystone/pm_domain.c
new file mode 100644
index 000000000..5eea01cbe
--- /dev/null
+++ b/arch/arm/mach-keystone/pm_domain.c
@@ -0,0 +1,50 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * PM domain driver for Keystone2 devices
+ *
+ * Copyright 2013 Texas Instruments, Inc.
+ *	Santosh Shilimkar <santosh.shillimkar@ti.com>
+ *
+ * Based on Kevins work on DAVINCI SOCs
+ *	Kevin Hilman <khilman@linaro.org>
+ */
+
+#include <linux/init.h>
+#include <linux/pm_runtime.h>
+#include <linux/pm_clock.h>
+#include <linux/platform_device.h>
+#include <linux/of.h>
+
+#include "keystone.h"
+
+static struct dev_pm_domain keystone_pm_domain = {
+	.ops = {
+		USE_PM_CLK_RUNTIME_OPS
+		USE_PLATFORM_PM_SLEEP_OPS
+	},
+};
+
+static struct pm_clk_notifier_block platform_domain_notifier = {
+	.pm_domain = &keystone_pm_domain,
+	.con_ids = { NULL },
+};
+
+static const struct of_device_id of_keystone_table[] = {
+	{.compatible = "ti,k2hk"},
+	{.compatible = "ti,k2e"},
+	{.compatible = "ti,k2l"},
+	{ /* end of list */ },
+};
+
+int __init keystone_pm_runtime_init(void)
+{
+	struct device_node *np;
+
+	np = of_find_matching_node(NULL, of_keystone_table);
+	if (!np)
+		return 0;
+
+	pm_clk_add_notifier(&platform_bus_type, &platform_domain_notifier);
+
+	return 0;
+}