diff --git a/drivers/gpu/drm/omapdrm/displays/encoder-tfp410.c b/drivers/gpu/drm/omapdrm/displays/encoder-tfp410.c
index 13e32d02c884a469d2ad0f53087e194cfbb261a7..947295f9e30f0fc2d8a778ba1f3105a87d35a4cf 100644
--- a/drivers/gpu/drm/omapdrm/displays/encoder-tfp410.c
+++ b/drivers/gpu/drm/omapdrm/displays/encoder-tfp410.c
@@ -22,7 +22,6 @@ struct panel_drv_data {
 	struct omap_dss_device *in;
 
 	int pd_gpio;
-	int data_lines;
 
 	struct videomode vm;
 };
@@ -82,8 +81,6 @@ static int tfp410_enable(struct omap_dss_device *dssdev)
 		return 0;
 
 	in->ops.dpi->set_timings(in, &ddata->vm);
-	if (ddata->data_lines)
-		in->ops.dpi->set_data_lines(in, ddata->data_lines);
 
 	r = in->ops.dpi->enable(in);
 	if (r)
@@ -226,7 +223,6 @@ static int tfp410_probe(struct platform_device *pdev)
 	dssdev->type = OMAP_DISPLAY_TYPE_DPI;
 	dssdev->output_type = OMAP_DISPLAY_TYPE_DVI;
 	dssdev->owner = THIS_MODULE;
-	dssdev->phy.dpi.data_lines = ddata->data_lines;
 	dssdev->port_num = 1;
 
 	r = omapdss_register_output(dssdev);
diff --git a/drivers/gpu/drm/omapdrm/displays/panel-dpi.c b/drivers/gpu/drm/omapdrm/displays/panel-dpi.c
index ed618548e1183ca209dc402e9dc43a08722a021e..091f73246122d12ae75f38c726f927d0415859ea 100644
--- a/drivers/gpu/drm/omapdrm/displays/panel-dpi.c
+++ b/drivers/gpu/drm/omapdrm/displays/panel-dpi.c
@@ -25,8 +25,6 @@ struct panel_drv_data {
 	struct omap_dss_device dssdev;
 	struct omap_dss_device *in;
 
-	int data_lines;
-
 	struct videomode vm;
 
 	struct backlight_device *backlight;
@@ -76,8 +74,6 @@ static int panel_dpi_enable(struct omap_dss_device *dssdev)
 	if (omapdss_device_is_enabled(dssdev))
 		return 0;
 
-	if (ddata->data_lines)
-		in->ops.dpi->set_data_lines(in, ddata->data_lines);
 	in->ops.dpi->set_timings(in, &ddata->vm);
 
 	r = in->ops.dpi->enable(in);
@@ -253,7 +249,6 @@ static int panel_dpi_probe(struct platform_device *pdev)
 	dssdev->type = OMAP_DISPLAY_TYPE_DPI;
 	dssdev->owner = THIS_MODULE;
 	dssdev->panel.vm = ddata->vm;
-	dssdev->phy.dpi.data_lines = ddata->data_lines;
 
 	r = omapdss_register_display(dssdev);
 	if (r) {
diff --git a/drivers/gpu/drm/omapdrm/displays/panel-lgphilips-lb035q02.c b/drivers/gpu/drm/omapdrm/displays/panel-lgphilips-lb035q02.c
index 43d21edb51f5923332d7217e29ae016f9632adfc..451e1608a1dbbd109f3203b71c8b148633fdef25 100644
--- a/drivers/gpu/drm/omapdrm/displays/panel-lgphilips-lb035q02.c
+++ b/drivers/gpu/drm/omapdrm/displays/panel-lgphilips-lb035q02.c
@@ -49,8 +49,6 @@ struct panel_drv_data {
 
 	struct spi_device *spi;
 
-	int data_lines;
-
 	struct videomode vm;
 
 	struct gpio_desc *enable_gpio;
@@ -159,8 +157,6 @@ static int lb035q02_enable(struct omap_dss_device *dssdev)
 	if (omapdss_device_is_enabled(dssdev))
 		return 0;
 
-	if (ddata->data_lines)
-		in->ops.dpi->set_data_lines(in, ddata->data_lines);
 	in->ops.dpi->set_timings(in, &ddata->vm);
 
 	r = in->ops.dpi->enable(in);
@@ -289,7 +285,6 @@ static int lb035q02_panel_spi_probe(struct spi_device *spi)
 	dssdev->type = OMAP_DISPLAY_TYPE_DPI;
 	dssdev->owner = THIS_MODULE;
 	dssdev->panel.vm = ddata->vm;
-	dssdev->phy.dpi.data_lines = ddata->data_lines;
 
 	r = omapdss_register_display(dssdev);
 	if (r) {
diff --git a/drivers/gpu/drm/omapdrm/displays/panel-nec-nl8048hl11.c b/drivers/gpu/drm/omapdrm/displays/panel-nec-nl8048hl11.c
index 2de27ba01552533e0b45c7868a9ba50adc2fd48b..95f6702a7b4ff7756fed560b979ddd6b4253c5ab 100644
--- a/drivers/gpu/drm/omapdrm/displays/panel-nec-nl8048hl11.c
+++ b/drivers/gpu/drm/omapdrm/displays/panel-nec-nl8048hl11.c
@@ -25,8 +25,6 @@ struct panel_drv_data {
 
 	struct videomode vm;
 
-	int data_lines;
-
 	int res_gpio;
 	int qvga_gpio;
 
@@ -153,8 +151,6 @@ static int nec_8048_enable(struct omap_dss_device *dssdev)
 	if (omapdss_device_is_enabled(dssdev))
 		return 0;
 
-	if (ddata->data_lines)
-		in->ops.dpi->set_data_lines(in, ddata->data_lines);
 	in->ops.dpi->set_timings(in, &ddata->vm);
 
 	r = in->ops.dpi->enable(in);
diff --git a/drivers/gpu/drm/omapdrm/displays/panel-sharp-ls037v7dw01.c b/drivers/gpu/drm/omapdrm/displays/panel-sharp-ls037v7dw01.c
index 04fe235b7cacf2113b2ece26fec76797575e4680..b38c3df0532f88b70f3405d36534ad71d6a854b2 100644
--- a/drivers/gpu/drm/omapdrm/displays/panel-sharp-ls037v7dw01.c
+++ b/drivers/gpu/drm/omapdrm/displays/panel-sharp-ls037v7dw01.c
@@ -24,8 +24,6 @@ struct panel_drv_data {
 	struct omap_dss_device *in;
 	struct regulator *vcc;
 
-	int data_lines;
-
 	struct videomode vm;
 
 	struct gpio_desc *resb_gpio;	/* low = reset active min 20 us */
@@ -99,8 +97,6 @@ static int sharp_ls_enable(struct omap_dss_device *dssdev)
 	if (omapdss_device_is_enabled(dssdev))
 		return 0;
 
-	if (ddata->data_lines)
-		in->ops.dpi->set_data_lines(in, ddata->data_lines);
 	in->ops.dpi->set_timings(in, &ddata->vm);
 
 	if (ddata->vcc) {
@@ -289,7 +285,6 @@ static int sharp_ls_probe(struct platform_device *pdev)
 	dssdev->type = OMAP_DISPLAY_TYPE_DPI;
 	dssdev->owner = THIS_MODULE;
 	dssdev->panel.vm = ddata->vm;
-	dssdev->phy.dpi.data_lines = ddata->data_lines;
 
 	r = omapdss_register_display(dssdev);
 	if (r) {
diff --git a/drivers/gpu/drm/omapdrm/displays/panel-tpo-td028ttec1.c b/drivers/gpu/drm/omapdrm/displays/panel-tpo-td028ttec1.c
index f313dbfcbacbdaa993c24ffeb91daa66c64bf0d2..cbf4c67c493386261f7d540fc61fdd175d5ef713 100644
--- a/drivers/gpu/drm/omapdrm/displays/panel-tpo-td028ttec1.c
+++ b/drivers/gpu/drm/omapdrm/displays/panel-tpo-td028ttec1.c
@@ -35,8 +35,6 @@ struct panel_drv_data {
 	struct omap_dss_device dssdev;
 	struct omap_dss_device *in;
 
-	int data_lines;
-
 	struct videomode vm;
 
 	struct spi_device *spi_dev;
@@ -207,8 +205,6 @@ static int td028ttec1_panel_enable(struct omap_dss_device *dssdev)
 	if (omapdss_device_is_enabled(dssdev))
 		return 0;
 
-	if (ddata->data_lines)
-		in->ops.dpi->set_data_lines(in, ddata->data_lines);
 	in->ops.dpi->set_timings(in, &ddata->vm);
 
 	r = in->ops.dpi->enable(in);
@@ -423,7 +419,6 @@ static int td028ttec1_panel_probe(struct spi_device *spi)
 	dssdev->type = OMAP_DISPLAY_TYPE_DPI;
 	dssdev->owner = THIS_MODULE;
 	dssdev->panel.vm = ddata->vm;
-	dssdev->phy.dpi.data_lines = ddata->data_lines;
 
 	r = omapdss_register_display(dssdev);
 	if (r) {
diff --git a/drivers/gpu/drm/omapdrm/displays/panel-tpo-td043mtea1.c b/drivers/gpu/drm/omapdrm/displays/panel-tpo-td043mtea1.c
index 0787dba44faa3f8261ead6e18e03a84cbd2a0c19..da5ea2c378da08d2140ad465b6b2a78000609ffb 100644
--- a/drivers/gpu/drm/omapdrm/displays/panel-tpo-td043mtea1.c
+++ b/drivers/gpu/drm/omapdrm/displays/panel-tpo-td043mtea1.c
@@ -58,8 +58,6 @@ struct panel_drv_data {
 
 	struct videomode vm;
 
-	int data_lines;
-
 	struct spi_device *spi;
 	struct regulator *vcc_reg;
 	int nreset_gpio;
@@ -378,8 +376,6 @@ static int tpo_td043_enable(struct omap_dss_device *dssdev)
 	if (omapdss_device_is_enabled(dssdev))
 		return 0;
 
-	if (ddata->data_lines)
-		in->ops.dpi->set_data_lines(in, ddata->data_lines);
 	in->ops.dpi->set_timings(in, &ddata->vm);
 
 	r = in->ops.dpi->enable(in);
diff --git a/drivers/gpu/drm/omapdrm/dss/dpi.c b/drivers/gpu/drm/omapdrm/dss/dpi.c
index b387c2f1f3613aaaeb4e286784f717a5c87e1998..86dbb65a6c28d6155c7944a6222a15e4634c12c7 100644
--- a/drivers/gpu/drm/omapdrm/dss/dpi.c
+++ b/drivers/gpu/drm/omapdrm/dss/dpi.c
@@ -560,17 +560,6 @@ static int dpi_check_timings(struct omap_dss_device *dssdev,
 	return 0;
 }
 
-static void dpi_set_data_lines(struct omap_dss_device *dssdev, int data_lines)
-{
-	struct dpi_data *dpi = dpi_get_data_from_dssdev(dssdev);
-
-	mutex_lock(&dpi->lock);
-
-	dpi->data_lines = data_lines;
-
-	mutex_unlock(&dpi->lock);
-}
-
 static int dpi_verify_pll(struct dss_pll *pll)
 {
 	int r;
@@ -725,8 +714,6 @@ static const struct omapdss_dpi_ops dpi_ops = {
 	.check_timings = dpi_check_timings,
 	.set_timings = dpi_set_timings,
 	.get_timings = dpi_get_timings,
-
-	.set_data_lines = dpi_set_data_lines,
 };
 
 static void dpi_init_output_port(struct platform_device *pdev,
diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss.h b/drivers/gpu/drm/omapdrm/dss/omapdss.h
index 47f0205809a15a72644cb64c19db75b416cc62ff..3cbc9e49aa5abe5530676bc06662a0ea131d0502 100644
--- a/drivers/gpu/drm/omapdrm/dss/omapdss.h
+++ b/drivers/gpu/drm/omapdrm/dss/omapdss.h
@@ -471,8 +471,6 @@ struct omapdss_dpi_ops {
 			    struct videomode *vm);
 	void (*get_timings)(struct omap_dss_device *dssdev,
 			    struct videomode *vm);
-
-	void (*set_data_lines)(struct omap_dss_device *dssdev, int data_lines);
 };
 
 struct omapdss_sdi_ops {
@@ -625,10 +623,6 @@ struct omap_dss_device {
 	enum omap_display_type output_type;
 
 	union {
-		struct {
-			u8 data_lines;
-		} dpi;
-
 		struct {
 			u8 channel;
 			u8 data_lines;