diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c
index b06eac8ad70d..dbbd71f754d0 100644
--- a/drivers/usb/typec/tcpm/tcpm.c
+++ b/drivers/usb/typec/tcpm/tcpm.c
@@ -4113,6 +4113,9 @@ static int tcpm_pps_set_op_curr(struct tcpm_port *port, u16 op_curr)
 		goto port_unlock;
 	}
 
+	/* Round down operating current to align with PPS valid steps */
+	op_curr = op_curr - (op_curr % RDO_PROG_CURR_MA_STEP);
+
 	reinit_completion(&port->pps_complete);
 	port->pps_data.op_curr = op_curr;
 	port->pps_status = 0;
@@ -4166,6 +4169,9 @@ static int tcpm_pps_set_out_volt(struct tcpm_port *port, u16 out_volt)
 		goto port_unlock;
 	}
 
+	/* Round down output voltage to align with PPS valid steps */
+	out_volt = out_volt - (out_volt % RDO_PROG_VOLT_MV_STEP);
+
 	reinit_completion(&port->pps_complete);
 	port->pps_data.out_volt = out_volt;
 	port->pps_status = 0;