2 files changed, 16 insertions, 3 deletions

diff --git a/sys/powerpc/mpc85xx/mpc85xx.c b/sys/powerpc/mpc85xx/mpc85xx.c
index 1ab14e61af28..bb422c026a82 100644
--- a/sys/powerpc/mpc85xx/mpc85xx.c
+++ b/sys/powerpc/mpc85xx/mpc85xx.c
@@ -438,16 +438,28 @@ err:
 }
 
 uint32_t
-mpc85xx_get_system_clock(void)
+mpc85xx_get_platform_clock(void)
 {
 	phandle_t soc;
-	uint32_t freq;
+	static uint32_t freq;
+
+	if (freq != 0)
+		return (freq);
 
 	soc = OF_finddevice("/soc");
-	freq = 0;
 
 	/* freq isn't modified on error. */
 	OF_getencprop(soc, "bus-frequency", (void *)&freq, sizeof(freq));
 
+	return (freq);
+}
+
+uint32_t
+mpc85xx_get_system_clock(void)
+{
+	uint32_t freq;
+
+	freq = mpc85xx_get_platform_clock();
+
 	return (freq / 2);
 }
diff --git a/sys/powerpc/mpc85xx/mpc85xx.h b/sys/powerpc/mpc85xx/mpc85xx.h
index 692f70ca7018..20fff6496bc1 100644
--- a/sys/powerpc/mpc85xx/mpc85xx.h
+++ b/sys/powerpc/mpc85xx/mpc85xx.h
@@ -171,6 +171,7 @@ void mpc85xx_enable_l3_cache(void);
 void mpc85xx_fix_errata(vm_offset_t);
 void dataloss_erratum_access(vm_offset_t, uint32_t);
 int mpc85xx_is_qoriq(void);
+uint32_t mpc85xx_get_platform_clock(void);
 uint32_t mpc85xx_get_system_clock(void);
 
 #endif /* _MPC85XX_H_ */