From 6af5773700a2470a88a57d61ce55645323d20a0c Mon Sep 17 00:00:00 2001
From: Kedareswara rao Appana <appana.durga.rao@xilinx.com>
Date: Fri, 9 Sep 2016 12:36:01 +0530
Subject: [PATCH] ARM64: zynqmp: Add description for LPDDMA channel usage

LPDDMA default allows only secured access.
inorder to enable these dma channels,
one should ensure that it allows non secure access.
This patch updates the same.

Reported-by: Sai Pavan Boddu <saipava@xilinx.com>
Signed-off-by: Kedareswara rao Appana <appanad@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
---
 arch/arm/dts/zynqmp.dtsi | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/arch/arm/dts/zynqmp.dtsi b/arch/arm/dts/zynqmp.dtsi
index f67238e897..aeeccbf9e9 100644
--- a/arch/arm/dts/zynqmp.dtsi
+++ b/arch/arm/dts/zynqmp.dtsi
@@ -421,7 +421,10 @@
 			power-domains = <&pd_gpu>;
 		};
 
-		/* ADMA */
+		/* LPDDMA default allows only secured access. inorder to enable
+		 * These dma channels, Users should ensure that these dma
+		 * Channels are allowed for non secure access.
+		 */
 		lpd_dma_chan1: dma@ffa80000 {
 			status = "disabled";
 			compatible = "xlnx,zynqmp-dma-1.0";
-- 
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