From ffe8d06bd3a5796cdfa33c979c1ec57b65703f08 Mon Sep 17 00:00:00 2001
From: zhouji <956133287@qq.com>
Date: Wed, 5 May 2021 23:13:10 +0800
Subject: [PATCH] =?UTF-8?q?[update]=20=E5=A2=9E=E5=8A=A0=E8=8E=B7=E5=8F=96?=
 =?UTF-8?q?cortex-a=20generic=20timer=E9=A2=91=E7=8E=87=E6=8E=A5=E5=8F=A3?=
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---
 libcpu/arm/cortex-a/gtimer.c | 8 ++++++++
 libcpu/arm/cortex-a/gtimer.h | 1 +
 2 files changed, 9 insertions(+)

diff --git a/libcpu/arm/cortex-a/gtimer.c b/libcpu/arm/cortex-a/gtimer.c
index b193a1593d..b35acc6e6f 100644
--- a/libcpu/arm/cortex-a/gtimer.c
+++ b/libcpu/arm/cortex-a/gtimer.c
@@ -110,6 +110,14 @@ void gtimer_set_counter_frequency(rt_uint32_t value)
     __asm__ volatile ("isb 0xF":::"memory");
 }
 
+/** Get the frequency the timer shall run at.
+ *  return timer frequency in Hz.
+ */
+rt_uint32_t gtimer_get_counter_frequency(void)
+{
+    return(__get_cntfrq());
+}
+
 /** Sets the reset value of the timer.
  *  param value: The value the timer is loaded with.
  */
diff --git a/libcpu/arm/cortex-a/gtimer.h b/libcpu/arm/cortex-a/gtimer.h
index 160d0cefde..ec5d54127e 100644
--- a/libcpu/arm/cortex-a/gtimer.h
+++ b/libcpu/arm/cortex-a/gtimer.h
@@ -14,6 +14,7 @@
 #include <rtdef.h>
 
 void gtimer_set_counter_frequency(rt_uint32_t value);
+rt_uint32_t gtimer_get_counter_frequency(void);
 void gtimer_set_load_value(rt_uint32_t value);
 rt_uint32_t gtimer_get_current_value(void);
 rt_uint64_t gtimer_get_current_physical_value(void);
-- 
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