[PATCH v2 2/2] arm: dts: k3-am64-main: Reserve OCMRAM for DMSC-lite and secure proxy communication

[Aswath Govindraju]

The final 128KB in SRAM is reserved by default for DMSC-lite code and
secure proxy communication buffer. The memory region used for DMSC-lite
code can be optionally freed up by secure firmware API[1]. However, the
buffer for secure proxy communication is not configurable. This default
hardware configuration is unique for AM64.

Therefore, indicate the area reserved for DMSC-lite code and secure proxy
communication buffer in the oc_sram device tree node.

[1] - http://downloads.ti.com/tisci/esd/latest/6_topic_user_guides/security_handover.html#triggering-security-handover

Signed-off-by: Aswath Govindraju <a-govindraju at ti.com>
---
 arch/arm/dts/k3-am64-main.dtsi | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm/dts/k3-am64-main.dtsi b/arch/arm/dts/k3-am64-main.dtsi
index f68b969a2e9b..c5af2ffb8ee1 100644
--- a/arch/arm/dts/k3-am64-main.dtsi
+++ b/arch/arm/dts/k3-am64-main.dtsi
@@ -16,6 +16,14 @@
 		tfa-sram at 1c0000 {
 			reg = <0x1c0000 0x20000>;
 		};
+
+		dmsc-sram at 1e0000 {
+			reg = <0x1e0000 0x1c000>;
+		};
+
+		sproxy-sram at 1fc000 {
+			reg = <0x1fc000 0x4000>;
+		};
 	};
 
 	gic500: interrupt-controller at 1800000 {
-- 
2.17.1