ARCv2: clocksource: Introduce 64bit local RTC counter

Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

1 files changed, 7 insertions, 2 deletions

diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c
index ca71cef4bafd..a3d186211ed3 100644
--- a/arch/arc/kernel/setup.c
+++ b/arch/arc/kernel/setup.c
@@ -200,9 +200,11 @@ static char *arc_cpu_mumbojumbo(int cpu_id, char *buf, int len)
                        (unsigned int)(arc_get_core_freq() / 1000000),
                        (unsigned int)(arc_get_core_freq() / 10000) % 100);
 
-        n += scnprintf(buf + n, len - n, "Timers\t\t: %s%s\nISA Extn\t: ",
+        n += scnprintf(buf + n, len - n, "Timers\t\t: %s%s%s%s\nISA Extn\t: ",
                        IS_AVAIL1(cpu->timers.t0, "Timer0 "),
-                       IS_AVAIL1(cpu->timers.t1, "Timer1 "));
+                       IS_AVAIL1(cpu->timers.t1, "Timer1 "),
+                       IS_AVAIL2(cpu->timers.rtc, "64-bit RTC ",
+                                 CONFIG_ARC_HAS_RTC));
 
         n += i = scnprintf(buf + n, len - n, "%s%s%s%s%s",
                            IS_AVAIL2(atomic, "atomic ", CONFIG_ARC_HAS_LLSC),
@@ -290,6 +292,9 @@ static void arc_chk_core_config(void)
         if (!cpu->timers.t1)
                 panic("Timer1 is not present!\n");
 
+        if (IS_ENABLED(CONFIG_ARC_HAS_RTC) && !cpu->timers.rtc)
+                panic("RTC is not present\n");
+
 #ifdef CONFIG_ARC_HAS_DCCM
         /*
          * DCCM can be arbit placed in hardware.