Docs: dt: rockchip: add rockchip,disable-mmu-reset property

Add rockchip,disable-mmu-reset property to disable some mmu
reset operation

Signed-off-by: Simon Xue <xxm@rock-chips.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

diff --git a/Documentation/devicetree/bindings/iommu/rockchip,iommu.txt b/Documentation/devicetree/bindings/iommu/rockchip,iommu.txt
index 9a55ac3735e541360287125dbcd2876212fa8264..2098f7732264e41fddb8e58c22a309f2693715e7 100644 (file)
--- a/Documentation/devicetree/bindings/iommu/rockchip,iommu.txt
+++ b/Documentation/devicetree/bindings/iommu/rockchip,iommu.txt
@@ -15,6 +15,11 @@ Required properties:
                     to associate with its master device.  See:
                     Documentation/devicetree/bindings/iommu/iommu.txt
 
+Optional properties:
+- rockchip,disable-mmu-reset : Don't use the mmu reset operation.
+                              Some mmu instances may produce unexpected results
+                              when the reset operation is used.
+
 Example:
 
        vopl_mmu: iommu@ff940300 {