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[U-Boot,25/27] ARM64: zynqmp: Add description for LPDDMA channel usage

Message ID 5e74a10e24f065d4da2a133b50e849de3a5ecb4a.1478871698.git.michal.simek@xilinx.com
State Accepted
Commit 6af5773700a2470a88a57d61ce55645323d20a0c
Delegated to: Michal Simek
Headers show

Commit Message

Michal Simek Nov. 11, 2016, 1:41 p.m. UTC 
From: Kedareswara rao Appana <appana.durga.rao@xilinx.com>

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(-)
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Patch

diff --git a/arch/arm/dts/zynqmp.dtsi b/arch/arm/dts/zynqmp.dtsi
index f67238e89725..aeeccbf9e9d0 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";