v4.19.13 snapshot.
diff --git a/drivers/clocksource/timer-of.h b/drivers/clocksource/timer-of.h
new file mode 100644
index 0000000..a5478f3
--- /dev/null
+++ b/drivers/clocksource/timer-of.h
@@ -0,0 +1,74 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __TIMER_OF_H__
+#define __TIMER_OF_H__
+
+#include <linux/clockchips.h>
+
+#define TIMER_OF_BASE 0x1
+#define TIMER_OF_CLOCK 0x2
+#define TIMER_OF_IRQ 0x4
+
+struct of_timer_irq {
+ int irq;
+ int index;
+ int percpu;
+ const char *name;
+ unsigned long flags;
+ irq_handler_t handler;
+};
+
+struct of_timer_base {
+ void __iomem *base;
+ const char *name;
+ int index;
+};
+
+struct of_timer_clk {
+ struct clk *clk;
+ const char *name;
+ int index;
+ unsigned long rate;
+ unsigned long period;
+};
+
+struct timer_of {
+ unsigned int flags;
+ struct device_node *np;
+ struct clock_event_device clkevt;
+ struct of_timer_base of_base;
+ struct of_timer_irq of_irq;
+ struct of_timer_clk of_clk;
+ void *private_data;
+};
+
+static inline struct timer_of *to_timer_of(struct clock_event_device *clkevt)
+{
+ return container_of(clkevt, struct timer_of, clkevt);
+}
+
+static inline void __iomem *timer_of_base(struct timer_of *to)
+{
+ return to->of_base.base;
+}
+
+static inline int timer_of_irq(struct timer_of *to)
+{
+ return to->of_irq.irq;
+}
+
+static inline unsigned long timer_of_rate(struct timer_of *to)
+{
+ return to->of_clk.rate;
+}
+
+static inline unsigned long timer_of_period(struct timer_of *to)
+{
+ return to->of_clk.period;
+}
+
+extern int __init timer_of_init(struct device_node *np,
+ struct timer_of *to);
+
+extern void __init timer_of_cleanup(struct timer_of *to);
+
+#endif