diff --git a/drivers/gpu/drm/nouveau/include/nvkm/subdev/clk.h b/drivers/gpu/drm/nouveau/include/nvkm/subdev/clk.h
index fb54417bc458898e6304b480bf58d4d783aa82e4..70c8665756ca0c0e9350e744c385bb9bd97c181f 100644
--- a/drivers/gpu/drm/nouveau/include/nvkm/subdev/clk.h
+++ b/drivers/gpu/drm/nouveau/include/nvkm/subdev/clk.h
@@ -52,6 +52,7 @@ struct nvkm_cstate {
 	struct list_head head;
 	u8  voltage;
 	u32 domain[nv_clk_src_max];
+	u8  id;
 };
 
 struct nvkm_pstate {
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/clk/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/clk/base.c
index 9ee24ec2869b654cd0d90de5424c67e42ea40912..23cc04c37c07c90ff183c163d54ffeab9958f176 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/clk/base.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/clk/base.c
@@ -160,6 +160,7 @@ nvkm_cstate_new(struct nvkm_clk *clk, int idx, struct nvkm_pstate *pstate)
 
 	*cstate = pstate->base;
 	cstate->voltage = cstepX.voltage;
+	cstate->id = idx;
 
 	while (domain && domain->name != nv_clk_src_max) {
 		if (domain->flags & NVKM_CLK_DOM_FLAG_CORE) {