[3/3] ARM: dts: keystone-k2g-ice: Add and enable DSP CMA memory pool

Message ID 20170810235245.30316-4-s-anna@ti.com
State Accepted
Commit 6794d3771c319bd67f95575f11846a0fe86105c5
Headers show
Series
  • Add DSP DT nodes on Keystone 66AK2G platforms
Related show

Commit Message

Suman Anna Aug. 10, 2017, 11:52 p.m.
A CMA memory pool reserved memory node is added, and is attached
to the DSP node through the 'memory-region' property on the K2G
ICE board. This area will be used for allocating virtio rings and
buffers. This node allows the DSP Memory Protection and Address
Extension (MPAX) module to be configured properly for the DSP
processor, and matches the values used on the other Keystone 2
boards for software compatibility.

The reserved memory node and the user DSP node are also marked
okay to enable the DSP on the K2G ICE board.

Signed-off-by: Suman Anna <s-anna@ti.com>

---
 arch/arm/boot/dts/keystone-k2g-ice.dts | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

-- 
2.13.1

Patch

diff --git a/arch/arm/boot/dts/keystone-k2g-ice.dts b/arch/arm/boot/dts/keystone-k2g-ice.dts
index d820d37b5148..78692745e0af 100644
--- a/arch/arm/boot/dts/keystone-k2g-ice.dts
+++ b/arch/arm/boot/dts/keystone-k2g-ice.dts
@@ -17,6 +17,19 @@ 
 		device_type = "memory";
 		reg = <0x00000008 0x00000000 0x00000000 0x20000000>;
 	};
+
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		dsp_common_memory: dsp-common-memory@81f800000 {
+			compatible = "shared-dma-pool";
+			reg = <0x00000008 0x1f800000 0x00000000 0x800000>;
+			reusable;
+			status = "okay";
+		};
+	};
 };
 
 &k2g_pinctrl {
@@ -33,3 +46,8 @@ 
 	pinctrl-0 = <&uart0_pins>;
 	status = "okay";
 };
+
+&dsp0 {
+	memory-region = <&dsp_common_memory>;
+	status = "okay";
+};