Commit 4c903a94 authored by Arnaud Pouliquen's avatar Arnaud Pouliquen Committed by Alexandre Torgue
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ARM: dts: stm32: update stm32mp151 for remote proc synchronization support 



Two backup registers are used to store the Cortex-M4 state and the resource
table address.
Declare the tamp node and add associated properties in m4_rproc node
to allow Linux to attach to a firmware loaded by the first boot stages.

Associated driver implementation is available in commit 9276536f
("remoteproc: stm32: Parse syscon that will manage M4 synchronisation").

Signed-off-by: default avatarArnaud Pouliquen <arnaud.pouliquen@st.com>
Signed-off-by: default avatarAlexandre Torgue <alexandre.torgue@st.com>
parent d27209f0

arch/arm/boot/dts/stm32mp151.dtsi

+7 −0
Original line number Diff line number Diff line
@@ -1573,6 +1573,11 @@ i2c6: i2c@5c009000 { 
			status = "disabled";

		};



		tamp: tamp@5c00a000 {

			compatible = "st,stm32-tamp", "syscon";

			reg = <0x5c00a000 0x400>;

		};



		/*

		 * Break node order to solve dependency probe issue between

		 * pinctrl and exti.
@@ -1749,6 +1754,8 @@ m4_rproc: m4@10000000 { 
			st,syscfg-holdboot = <&rcc 0x10C 0x1>;

			st,syscfg-tz = <&rcc 0x000 0x1>;

			st,syscfg-pdds = <&pwr_mcu 0x0 0x1>;

			st,syscfg-rsc-tbl = <&tamp 0x144 0xFFFFFFFF>;

			st,syscfg-m4-state = <&tamp 0x148 0xFFFFFFFF>;

			status = "disabled";

		};

	};