diff --git a/drivers/soc/rockchip/pm_domains.c b/drivers/soc/rockchip/pm_domains.c
index ad96ddeaeb78..53efc386b1ad 100644
--- a/drivers/soc/rockchip/pm_domains.c
+++ b/drivers/soc/rockchip/pm_domains.c
@@ -402,11 +402,16 @@ static int rockchip_pm_add_one_domain(struct rockchip_pmu *pmu,
 
 	pd->num_clks = of_count_phandle_with_args(node, "clocks",
 						  "#clock-cells");
-
-	pd->clks = devm_kcalloc(pmu->dev, pd->num_clks, sizeof(*pd->clks),
-				GFP_KERNEL);
-	if (!pd->clks)
-		return -ENOMEM;
+	if (pd->num_clks > 0) {
+		pd->clks = devm_kcalloc(pmu->dev, pd->num_clks,
+					sizeof(*pd->clks), GFP_KERNEL);
+		if (!pd->clks)
+			return -ENOMEM;
+	} else {
+		dev_dbg(pmu->dev, "%s: doesn't have clocks: %d\n",
+			node->name, pd->num_clks);
+		pd->num_clks = 0;
+	}
 
 	for (i = 0; i < pd->num_clks; i++) {
 		pd->clks[i].clk = of_clk_get(node, i);