Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/clocksource/timer-versatile.c b/drivers/clocksource/timer-versatile.c
new file mode 100644
index 0000000..e4ebb65
--- /dev/null
+++ b/drivers/clocksource/timer-versatile.c
@@ -0,0 +1,37 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *
+ * Copyright (C) 2014 ARM Limited
+ */
+
+#include <linux/clocksource.h>
+#include <linux/io.h>
+#include <linux/of_address.h>
+#include <linux/sched_clock.h>
+
+#define SYS_24MHZ 0x05c
+
+static void __iomem *versatile_sys_24mhz;
+
+static u64 notrace versatile_sys_24mhz_read(void)
+{
+ return readl(versatile_sys_24mhz);
+}
+
+static int __init versatile_sched_clock_init(struct device_node *node)
+{
+ void __iomem *base = of_iomap(node, 0);
+
+ if (!base)
+ return -ENXIO;
+
+ versatile_sys_24mhz = base + SYS_24MHZ;
+
+ sched_clock_register(versatile_sys_24mhz_read, 32, 24000000);
+
+ return 0;
+}
+TIMER_OF_DECLARE(vexpress, "arm,vexpress-sysreg",
+ versatile_sched_clock_init);
+TIMER_OF_DECLARE(versatile, "arm,versatile-sysreg",
+ versatile_sched_clock_init);