From: Mathieu Poirier <mathieu.poirier@linaro.org>
To: Arnaud Pouliquen <arnaud.pouliquen@st.com>
Cc: Ohad Ben-Cohen <ohad@wizery.com>, Rob Herring <robh@kernel.org>,
Ahmad Fatoum <a.fatoum@pengutronix.de>,
Alexandre Torgue <alexandre.torgue@st.com>,
devicetree@vger.kernel.org, linux-remoteproc@vger.kernel.org,
linux-kernel@vger.kernel.org,
Bjorn Andersson <bjorn.andersson@linaro.org>,
linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2 4/4] ARM: dts: stm32: update stm32mp151 for remote proc synchronization support
Date: Wed, 14 Oct 2020 10:51:21 -0600 [thread overview]
Message-ID: <20201014165121.GA1406857@xps15> (raw)
In-Reply-To: <20201014125441.2457-5-arnaud.pouliquen@st.com>
On Wed, Oct 14, 2020 at 02:54:41PM +0200, Arnaud Pouliquen wrote:
> 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>;
Tested-by: Mathieu Poirier <mathieu.poirier@linaro.org>
> status = "disabled";
> };
> };
> --
> 2.17.1
>
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next prev parent reply other threads:[~2020-10-14 16:52 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-14 12:54 [PATCH v2 0/4] ARM: stm32: add DT properties for remote proc synchronisation Arnaud Pouliquen
2020-10-14 12:54 ` [PATCH v2 1/4] dt-bindings: arm: stm32: Add compatible for syscon tamp node Arnaud Pouliquen
2020-10-14 12:54 ` [PATCH v2 2/4] dt-bindings: remoteproc: stm32_rproc: update for firmware synchronization Arnaud Pouliquen
2020-10-19 20:26 ` Rob Herring
2020-10-14 12:54 ` [PATCH v2 3/4] dt-bindings: remoteproc: stm32_rproc: update syscon descriptions Arnaud Pouliquen
2020-10-19 20:27 ` Rob Herring
2020-10-14 12:54 ` [PATCH v2 4/4] ARM: dts: stm32: update stm32mp151 for remote proc synchronization support Arnaud Pouliquen
2020-10-14 16:51 ` Mathieu Poirier [this message]
2020-10-26 15:49 ` [PATCH v2 0/4] ARM: stm32: add DT properties for remote proc synchronisation Bjorn Andersson
2020-11-17 11:18 ` Alexandre Torgue
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