From 644b213ccced83495eb54dd48764f7e963bcc1c0 Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@gmail.com>
Date: Fri, 4 Nov 2016 14:44:22 -0700
Subject: [PATCH] xtensa: configure shared DMA pool reservation in kc705 DTS

Add example 64MByte long reservation in the first 512MBytes of physical
memory used as shared DMA pool.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
---
 arch/xtensa/boot/dts/kc705.dts | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/arch/xtensa/boot/dts/kc705.dts b/arch/xtensa/boot/dts/kc705.dts
index b1f4ee8c9a22..6106bdc097ad 100644
--- a/arch/xtensa/boot/dts/kc705.dts
+++ b/arch/xtensa/boot/dts/kc705.dts
@@ -11,4 +11,20 @@
 		device_type = "memory";
 		reg = <0x00000000 0x38000000>;
 	};
+
+	reserved-memory {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		/* global autoconfigured region for contiguous allocations */
+		linux,cma {
+			compatible = "shared-dma-pool";
+			reusable;
+			size = <0x04000000>;
+			alignment = <0x2000>;
+			alloc-ranges = <0x00000000 0x20000000>;
+			linux,cma-default;
+		};
+	};
 };