From f741ee5cab042b7e9d403fcde7f9c0857efb997b Mon Sep 17 00:00:00 2001
From: Mark Yao <mark.yao@rock-chips.com>
Date: Thu, 23 Nov 2017 14:22:33 +0800
Subject: [PATCH] drm/rockchip: support using reserved memory region for cma

Change-Id: I829162c21748052525b0583185db67015f24141d
Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
---
 drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
index 6f34b0613568..299c28a9140d 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
@@ -34,6 +34,7 @@
 #include <linux/fence.h>
 #include <linux/console.h>
 #include <linux/iommu.h>
+#include <linux/of_reserved_mem.h>
 
 #include <drm/rockchip_drm.h>
 
@@ -1324,6 +1325,9 @@ static int rockchip_drm_bind(struct device *dev)
 #ifndef MODULE
 	show_loader_logo(drm_dev);
 #endif
+	ret = of_reserved_mem_device_init(drm_dev->dev);
+	if (ret)
+		DRM_DEBUG_KMS("No reserved memory region assign to drm\n");
 
 	ret = rockchip_drm_fbdev_init(drm_dev);
 	if (ret)