linux-kernel - [PATCH v2 4/7] ARM: dts: rockchip: add virtual iommu for display

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Date:	Wed,  8 Jun 2016 21:26:29 +0800
From:	Shunqian Zheng <zhengsq@...k-chips.com>
To:	joro@...tes.org, heiko@...ech.de, robh+dt@...nel.org,
	mark.rutland@....com, linux@...linux.org.uk,
	mark.yao@...k-chips.com, airlied@...ux.ie, tfiga@...gle.com,
	xxm@...k-chips.com
Cc:	linux-arm-kernel@...ts.infradead.org,
	iommu@...ts.linux-foundation.org, devicetree@...r.kernel.org,
	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	linux-rockchip@...ts.infradead.org,
	Shunqian Zheng <zhengsq@...k-chips.com>
Subject: [PATCH v2 4/7] ARM: dts: rockchip: add virtual iommu for display

An virtual iommu without reg or interrupts for display.
Adding this according to iommu driver changes.

Signed-off-by: Shunqian Zheng <zhengsq@...k-chips.com>
---
 arch/arm/boot/dts/rk3288.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm/boot/dts/rk3288.dtsi b/arch/arm/boot/dts/rk3288.dtsi
index 7fa932f..4cd535f 100644
--- a/arch/arm/boot/dts/rk3288.dtsi
+++ b/arch/arm/boot/dts/rk3288.dtsi
@@ -219,9 +219,15 @@
 		clock-names = "timer", "pclk";
 	};
 
+	display_mmu: virtual-iommu {
+		compatible = "rockchip,iommu";
+		#iommu-cells = <0>;
+	};
+
 	display-subsystem {
 		compatible = "rockchip,display-subsystem";
 		ports = <&vopl_out>, <&vopb_out>;
+		iommus = <&display_mmu>;
 	};
 
 	sdmmc: dwmmc@...c0000 {
-- 
1.9.1