diff --git a/Documentation/devicetree/bindings/drm/tilcdc/panel.txt b/Documentation/devicetree/bindings/drm/tilcdc/panel.txt
index 4ab9e23..f2d7370 100644
--- a/Documentation/devicetree/bindings/drm/tilcdc/panel.txt
+++ b/Documentation/devicetree/bindings/drm/tilcdc/panel.txt
@@ -12,6 +12,7 @@ Required properties:
    - sync-ctrl: Horizontal and Vertical Sync: Control: 0=ignore
    - raster-order: Raster Data Order Select: 1=Most-to-least 0=Least-to-most
    - fifo-th: DMA FIFO threshold
+   - invert-ac-bias (optional): Invert Output Enable: 0=active high 1=active low
  - display-timings: typical videomode of lcd panel.  Multiple video modes
    can be listed if the panel supports multiple timings, but the 'native-mode'
    should be the preferred/default resolution.  Refer to
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
index 3a3f4c6..faed7b6 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
@@ -401,6 +401,11 @@ static int tilcdc_crtc_mode_set(struct drm_crtc *crtc,
 		tilcdc_set(dev, LCDC_RASTER_TIMING_2_REG, LCDC_INVERT_PIXEL_CLOCK);
 	else
 		tilcdc_clear(dev, LCDC_RASTER_TIMING_2_REG, LCDC_INVERT_PIXEL_CLOCK);
+ 
+	if (info->invert_ac_bias)
+		tilcdc_set(dev, LCDC_RASTER_TIMING_2_REG, LCDC_INVERT_AC_BIAS);
+	else
+		tilcdc_clear(dev, LCDC_RASTER_TIMING_2_REG, LCDC_INVERT_AC_BIAS);
 
 	if (info->sync_ctrl)
 		tilcdc_set(dev, LCDC_RASTER_TIMING_2_REG, LCDC_SYNC_CTRL);
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.h b/drivers/gpu/drm/tilcdc/tilcdc_drv.h
index 4c4aa4e..91bcfbd 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_drv.h
+++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.h
@@ -130,6 +130,9 @@ struct tilcdc_panel_info {
 	/* AC Bias Pin Transitions per Interrupt */
 	uint32_t ac_bias_intrpt;
 
+	/* Invert output enable */
+	uint32_t invert_ac_bias;
+
 	/* DMA burst size */
 	uint32_t dma_burst_sz;
 
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_panel.c b/drivers/gpu/drm/tilcdc/tilcdc_panel.c
index 7a03158..41cb645 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_panel.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_panel.c
@@ -334,6 +334,7 @@ static struct tilcdc_panel_info *of_get_panel_info(struct device_node *np)
 	/* optional: */
 	info->tft_alt_mode      = of_property_read_bool(info_np, "tft-alt-mode");
 	info->invert_pxl_clk    = of_property_read_bool(info_np, "invert-pxl-clk");
+	info->invert_ac_bias    = of_property_read_bool(info_np, "invert-ac-bias");
 
 	if (ret) {
 		pr_err("%s: error reading panel-info properties\n", __func__);
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_regs.h b/drivers/gpu/drm/tilcdc/tilcdc_regs.h
index 1bf5e25..7a0f42e 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_regs.h
+++ b/drivers/gpu/drm/tilcdc/tilcdc_regs.h
@@ -77,6 +77,7 @@
 #define LCDC_AC_BIAS_FREQUENCY(x)                ((x) << 8)
 #define LCDC_SYNC_CTRL                           BIT(25)
 #define LCDC_SYNC_EDGE                           BIT(24)
+#define LCDC_INVERT_AC_BIAS                      BIT(23)
 #define LCDC_INVERT_PIXEL_CLOCK                  BIT(22)
 #define LCDC_INVERT_HSYNC                        BIT(21)
 #define LCDC_INVERT_VSYNC                        BIT(20)