From 776e25788c744fe91f7e720331a17ad0ff050480 Mon Sep 17 00:00:00 2001 From: Aswath Govindraju Date: Wed, 16 Jun 2021 22:08:21 +0530 Subject: [PATCH] arm: dts: k3-am64-main: Reserve OCMRAM for DMSC-lite and secure proxy communication 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 Signed-off-by: Lokesh Vutla Acked-by: Suman Anna Link: https://lore.kernel.org/r/20210616163821.20457-3-a-govindraju@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 f68b969..c5af2ff 100644 --- a/arch/arm/dts/k3-am64-main.dtsi +++ b/arch/arm/dts/k3-am64-main.dtsi @@ -16,6 +16,14 @@ tfa-sram@1c0000 { reg = <0x1c0000 0x20000>; }; + + dmsc-sram@1e0000 { + reg = <0x1e0000 0x1c000>; + }; + + sproxy-sram@1fc000 { + reg = <0x1fc000 0x4000>; + }; }; gic500: interrupt-controller@1800000 { -- 2.7.4