ARM: dts: keystone-k2l-evm: Add and enable common DSP CMA memory pool

A common CMA memory pool reserved memory node is added, and is attached
to all the DSP nodes through the 'memory-region' property on the 66AK2L
EVM board. This area will be used for allocating virtio rings and buffers.
The common node allows the DSP Memory Protection and Address Extension
(MPAX) module to be configured uniformly across all the DSP processors.

The reserved memory node and all the user DSP nodes are also marked okay
to enable the DSPs on the 66AK2L EVM board.

Signed-off-by: Sam Nelson <sam.nelson@ti.com>
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Santosh Shilimkar <ssantosh@kernel.org>

diff --git a/arch/arm/boot/dts/keystone-k2l-evm.dts b/arch/arm/boot/dts/keystone-k2l-evm.dts
index 056b42f99d7acabdf531af6654d282979ddebae7..528667618db45ee625916eb6d72d116a8e9e4aed 100644 (file)
--- a/arch/arm/boot/dts/keystone-k2l-evm.dts
+++ b/arch/arm/boot/dts/keystone-k2l-evm.dts
@@ -16,6 +16,19 @@
        compatible = "ti,k2l-evm", "ti,k2l", "ti,keystone";
        model = "Texas Instruments Keystone 2 Lamarr 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 {
                        refclksys: refclksys {
@@ -133,3 +146,23 @@
                reg = <1>;
        };
 };
+
+&dsp0 {
+       memory-region = <&dsp_common_memory>;
+       status = "okay";
+};
+
+&dsp1 {
+       memory-region = <&dsp_common_memory>;
+       status = "okay";
+};
+
+&dsp2 {
+       memory-region = <&dsp_common_memory>;
+       status = "okay";
+};
+
+&dsp3 {
+       memory-region = <&dsp_common_memory>;
+       status = "okay";
+};