diff --git a/drivers/staging/hikey9xx/hi6421v600-regulator.c b/drivers/staging/hikey9xx/hi6421v600-regulator.c
index 5ddaf7f8cacc..21467fce9980 100644
--- a/drivers/staging/hikey9xx/hi6421v600-regulator.c
+++ b/drivers/staging/hikey9xx/hi6421v600-regulator.c
@@ -267,6 +267,9 @@ static int hi6421_spmi_dt_parse(struct platform_device *pdev,
 		return ret;
 	}
 
+	/* FIXME: are there a better value for this? */
+	rdesc->ramp_delay = rdesc->enable_time;
+
 	/* parse .eco_uA */
 	ret = of_property_read_u32(np, "eco-microamp",
 				   &sreg->eco_uA);