diff --git a/src/soc/amd/glinda/cpu.c b/src/soc/amd/glinda/cpu.c
index 26380077f2..a7161270d2 100644
--- a/src/soc/amd/glinda/cpu.c
+++ b/src/soc/amd/glinda/cpu.c
@@ -7,16 +7,11 @@
 #include <cpu/amd/microcode.h>
 #include <cpu/cpu.h>
 #include <device/device.h>
-#include <smbios.h>
 #include <soc/cpu.h>
 
 _Static_assert(CONFIG_MAX_CPUS == 24, "Do not override MAX_CPUS. To reduce the number of "
 	"available cores, use the downcore_mode and disable_smt devicetree settings instead.");
 
-unsigned int smbios_processor_external_clock(void)
-{
-	return 100; // 100 MHz
-}
 static void zen_2_3_init(struct device *dev)
 {
 	check_mca();