diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.h b/drivers/gpu/nvgpu/gk20a/gk20a.h
index 62269f211..b1d3f3e30 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.h
@@ -588,6 +588,7 @@ struct gpu_ops {
 			void *lsfm,	u32 *p_bl_gen_desc_size);
 		int (*flcn_populate_bl_dmem_desc)(struct gk20a *g,
 			void *lsfm,	u32 *p_bl_gen_desc_size, u32 falconid);
+		int (*mclk_init)(struct gk20a *g);
 		u32  lspmuwprinitdone;
 		u32  lsfloadedfalconid;
 		bool fecsbootstrapdone;
diff --git a/drivers/gpu/nvgpu/gk20a/pmu_gk20a.c b/drivers/gpu/nvgpu/gk20a/pmu_gk20a.c
index a3898993e..539ad44e0 100644
--- a/drivers/gpu/nvgpu/gk20a/pmu_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/pmu_gk20a.c
@@ -3081,6 +3081,8 @@ void pmu_setup_hw(struct work_struct *work)
 		gk20a_dbg_pmu("pmu starting");
 		if (platform->can_elpg)
 			pmu_init_powergating(g);
+		if (g->ops.pmu.mclk_init)
+			g->ops.pmu.mclk_init(g);
 		break;
 	case PMU_STATE_ELPG_BOOTED:
 		gk20a_dbg_pmu("elpg booted");