Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1699155

[PATCH 6/6] ARM: dts: keystone-k2e-evm: Add and enable DSP CMA memory pool

Show all headers | View raw

From: Sam Nelson <sam.nelson@ti.com>

A CMA memory pool reserved memory node is added, and is attached to
the DSP node through the 'memory-region' property on the K2E EVM 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 66AK2E EVM board.

Signed-off-by: Sam Nelson <sam.nelson@ti.com>
Signed-off-by: Suman Anna <s-anna@ti.com>
---
 arch/arm/boot/dts/keystone-k2e-evm.dts | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/arch/arm/boot/dts/keystone-k2e-evm.dts b/arch/arm/boot/dts/keystone-k2e-evm.dts
index ae1ebe7ee021..f1f32c54e72f 100644
--- a/arch/arm/boot/dts/keystone-k2e-evm.dts
+++ b/arch/arm/boot/dts/keystone-k2e-evm.dts
@@ -16,6 +16,19 @@
 	compatible = "ti,k2e-evm", "ti,k2e", "ti,keystone";
 	model = "Texas Instruments Keystone 2 Edison EVM";
 
+	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";
+		};
+	};
+
 	soc {
 
 		clocks {
@@ -160,3 +173,8 @@
 		reg = <1>;
 	};
 };
+
+&dsp0 {
+	memory-region = <&dsp_common_memory>;
+	status = "okay";
+};
-- 
2.13.1

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

[PATCH 0/6] Add DSP DT nodes on Keystone platforms Suman Anna <s-anna@ti.com> - 2017-07-29 01:20 +0200
  [PATCH 6/6] ARM: dts: keystone-k2e-evm: Add and enable DSP CMA memory pool Suman Anna <s-anna@ti.com> - 2017-07-29 01:30 +0200
  [PATCH 1/6] ARM: dts: keystone-k2hk: Add DSP nodes Suman Anna <s-anna@ti.com> - 2017-07-29 01:30 +0200
  [PATCH 5/6] ARM: dts: keystone-k2l-evm: Add and enable common DSP CMA memory pool Suman Anna <s-anna@ti.com> - 2017-07-29 01:30 +0200
  [PATCH 2/6] ARM: dts: keystone-k2l: Add DSP nodes Suman Anna <s-anna@ti.com> - 2017-07-29 01:30 +0200
  [PATCH 4/6] ARM: dts: keystone-k2hk-evm: Add and enable common DSP CMA memory pool Suman Anna <s-anna@ti.com> - 2017-07-29 01:30 +0200
  [PATCH 3/6] ARM: dts: keystone-k2e: Add DSP node Suman Anna <s-anna@ti.com> - 2017-07-29 01:30 +0200
  Re: [PATCH 0/6] Add DSP DT nodes on Keystone platforms "santosh.shilimkar@oracle.com" <santosh.shilimkar@oracle.com> - 2017-07-31 06:00 +0200

csiph-web