diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dce60/dce60_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dce60/dce60_clk_mgr.c
index c11c6b3a787d21b2554bca144f6c9136fb9b9c55..0267644717b27ad4e7c0cf724180f0cd3178005e 100644
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dce60/dce60_clk_mgr.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dce60/dce60_clk_mgr.c
@@ -80,7 +80,7 @@ static const struct state_dependent_clocks dce60_max_clks_by_state[] = {
 /* ClocksStatePerformance */
 { .display_clk_khz = 600000, .pixel_clk_khz = 400000 } };
 
-int dce60_get_dp_ref_freq_khz(struct clk_mgr *clk_mgr_base)
+static int dce60_get_dp_ref_freq_khz(struct clk_mgr *clk_mgr_base)
 {
 	struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base);
 	int dprefclk_wdivider;