From: Arnaud Pouliquen <arnaud.pouliquen@st.com>
To: Rob Herring <robh@kernel.org>,
Alexandre Torgue <alexandre.torgue@st.com>
Cc: <devicetree@vger.kernel.org>,
<linux-stm32@st-md-mailman.stormreply.com>,
<linux-arm-kernel@lists.infradead.org>,
<linux-remoteproc@vger.kernel.org>,
<linux-kernel@vger.kernel.org>,
Fabien Dessenne <fabien.dessenne@st.com>,
Arnaud Pouliquen <arnaud.pouliquen@st.com>,
Mathieu Poirier <mathieu.poirier@linaro.org>,
Ohad Ben-Cohen <ohad@wizery.com>,
Bjorn Andersson <bjorn.andersson@linaro.org>
Subject: [PATCH 3/3] ARM: dts: stm32: update stm32mp151 for remote proc synchronisation support
Date: Thu, 27 Aug 2020 09:21:01 +0200 [thread overview]
Message-ID: <20200827072101.26588-4-arnaud.pouliquen@st.com> (raw)
In-Reply-To: <20200827072101.26588-1-arnaud.pouliquen@st.com>
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 9276536f455b3
("remoteproc: stm32: Parse syscon that will manage M4 synchronisation").
Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
---
arch/arm/boot/dts/stm32mp151.dtsi | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/arch/arm/boot/dts/stm32mp151.dtsi b/arch/arm/boot/dts/stm32mp151.dtsi
index bfe29023fbd5..842ecffae73a 100644
--- a/arch/arm/boot/dts/stm32mp151.dtsi
+++ b/arch/arm/boot/dts/stm32mp151.dtsi
@@ -1541,6 +1541,11 @@
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.
@@ -1717,6 +1722,8 @@
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";
};
};
--
2.17.1
next prev parent reply other threads:[~2020-08-27 7:21 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-27 7:20 [PATCH 0/3] ARM: stm32: add DT properties for remote proc synchronisation Arnaud Pouliquen
2020-08-27 7:20 ` [PATCH 1/3] dt-bindings: arm: stm32: Add compatible for syscon tamp node Arnaud Pouliquen
2020-09-09 20:19 ` Rob Herring
2020-08-27 7:21 ` [PATCH 2/3] dt-bindings: remoteproc: stm32_rproc: update for firmware synchronization Arnaud Pouliquen
2020-09-09 20:22 ` Rob Herring
2020-09-11 13:49 ` Arnaud POULIQUEN
2020-09-23 14:30 ` Arnaud POULIQUEN
2020-08-27 7:21 ` Arnaud Pouliquen [this message]
2020-09-24 5:45 ` [Linux-stm32] [PATCH 3/3] ARM: dts: stm32: update stm32mp151 for remote proc synchronisation support Ahmad Fatoum
2020-09-24 8:02 ` Arnaud POULIQUEN
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