diff --git a/drivers/gpu/drm/rcar-du/rcar_du_group.c b/drivers/gpu/drm/rcar-du/rcar_du_group.c
index 7e440f61977f9fd61c7771d8857901cd1f247249..9eee47969e77818805ba5b9baf595eab05f9dc67 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_group.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_group.c
@@ -287,6 +287,47 @@ int rcar_du_set_dpad0_vsp1_routing(struct rcar_du_device *rcdu)
 	return 0;
 }
 
+static void rcar_du_group_set_dpad_levels(struct rcar_du_group *rgrp)
+{
+	static const u32 doflr_values[2] = {
+		DOFLR_HSYCFL0 | DOFLR_VSYCFL0 | DOFLR_ODDFL0 |
+		DOFLR_DISPFL0 | DOFLR_CDEFL0  | DOFLR_RGBFL0,
+		DOFLR_HSYCFL1 | DOFLR_VSYCFL1 | DOFLR_ODDFL1 |
+		DOFLR_DISPFL1 | DOFLR_CDEFL1  | DOFLR_RGBFL1,
+	};
+	static const u32 dpad_mask = BIT(RCAR_DU_OUTPUT_DPAD1)
+				   | BIT(RCAR_DU_OUTPUT_DPAD0);
+	struct rcar_du_device *rcdu = rgrp->dev;
+	u32 doflr = DOFLR_CODE;
+	unsigned int i;
+
+	if (rcdu->info->gen < 2)
+		return;
+
+	/*
+	 * The DPAD outputs can't be controlled directly. However, the parallel
+	 * output of the DU channels routed to DPAD can be set to fixed levels
+	 * through the DOFLR group register. Use this to turn the DPAD on or off
+	 * by driving fixed low-level signals at the output of any DU channel
+	 * not routed to a DPAD output. This doesn't affect the DU output
+	 * signals going to other outputs, such as the internal LVDS and HDMI
+	 * encoders.
+	 */
+
+	for (i = 0; i < rgrp->num_crtcs; ++i) {
+		struct rcar_du_crtc_state *rstate;
+		struct rcar_du_crtc *rcrtc;
+
+		rcrtc = &rcdu->crtcs[rgrp->index * 2 + i];
+		rstate = to_rcar_crtc_state(rcrtc->crtc.state);
+
+		if (!(rstate->outputs & dpad_mask))
+			doflr |= doflr_values[i];
+	}
+
+	rcar_du_group_write(rgrp, DOFLR, doflr);
+}
+
 int rcar_du_group_set_routing(struct rcar_du_group *rgrp)
 {
 	struct rcar_du_device *rcdu = rgrp->dev;
@@ -306,5 +347,7 @@ int rcar_du_group_set_routing(struct rcar_du_group *rgrp)
 
 	rcar_du_group_write(rgrp, DORCR, dorcr);
 
+	rcar_du_group_set_dpad_levels(rgrp);
+
 	return rcar_du_set_dpad0_vsp1_routing(rgrp->dev);
 }