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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 9276536f45
("remoteproc: stm32: Parse syscon that will manage M4 synchronisation").

Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
This commit is contained in:
Arnaud Pouliquen 2020-10-14 14:54:41 +02:00 committed by Alexandre Torgue
parent d27209f04d
commit 4c903a9464
1 changed files with 7 additions and 0 deletions
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7
arch/arm/boot/dts/stm32mp151.dtsi
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@ -1573,6 +1573,11 @@
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 @@
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";
};
};