diff --git a/drivers/gpu/drm/stm/drv.c b/drivers/gpu/drm/stm/drv.c
index 422220df7d8c..7a61a3c63469 100644
--- a/drivers/gpu/drm/stm/drv.c
+++ b/drivers/gpu/drm/stm/drv.c
@@ -180,7 +180,9 @@ static const struct dev_pm_ops drv_pm_ops = {
 static int stm_drm_platform_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
+	struct device_node *np = pdev->dev.of_node;
 	struct drm_device *ddev;
+	u32 fb_bpp = 16;
 	int ret;
 
 	DRM_DEBUG("%s\n", __func__);
@@ -203,7 +205,9 @@ static int stm_drm_platform_probe(struct platform_device *pdev)
 	if (ret)
 		goto err_put;
 
-	drm_fbdev_dma_setup(ddev, 16);
+	of_property_read_u32(np, "st,fb-bpp", &fb_bpp);
+
+	drm_fbdev_dma_setup(ddev, fb_bpp);
 
 	return 0;