linux-kernel - [PATCH 5/5] ARM: dts: stm32: fix m4

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Date:   Fri, 31 Mar 2023 17:46:51 +0200
From:   Arnaud Pouliquen <arnaud.pouliquen@...s.st.com>
To:     Bjorn Andersson <andersson@...nel.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>
CC:     <linux-remoteproc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <devicetree@...r.kernel.org>, <arnaud.pouliquen@...s.st.com>
Subject: [PATCH 5/5] ARM: dts: stm32: fix m4_rproc references to use scmi

Fixes stm32mp15*-scmi DTS files introduced in [1]:
This patch fixes the node which uses the MCU reset and adds the
missing HOLD_BOOT which is also handled by the SCMI reset service.

This change cannot be applied as a fix on commit [1], the management
of the hold boot impacts also the stm32_rproc driver.

[1] 'commit 5b7e58313a77 ("ARM: dts: stm32: Add SCMI version of STM32 boards (DK1/DK2/ED1/EV1)")'

Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@...s.st.com>
---
 arch/arm/boot/dts/stm32mp157a-dk1-scmi.dts | 6 ++++--
 arch/arm/boot/dts/stm32mp157c-dk2-scmi.dts | 6 ++++--
 arch/arm/boot/dts/stm32mp157c-ed1-scmi.dts | 6 ++++--
 arch/arm/boot/dts/stm32mp157c-ev1-scmi.dts | 6 ++++--
 4 files changed, 16 insertions(+), 8 deletions(-)

diff --git a/arch/arm/boot/dts/stm32mp157a-dk1-scmi.dts b/arch/arm/boot/dts/stm32mp157a-dk1-scmi.dts
index e539cc80bef8..134788e64265 100644
--- a/arch/arm/boot/dts/stm32mp157a-dk1-scmi.dts
+++ b/arch/arm/boot/dts/stm32mp157a-dk1-scmi.dts
@@ -55,8 +55,10 @@ &mdma1 {
 	resets = <&scmi_reset RST_SCMI_MDMA>;
 };
 
-&mlahb {
-	resets = <&scmi_reset RST_SCMI_MCU>;
+&m4_rproc {
+	resets = <&scmi_reset RST_SCMI_MCU>,
+		 <&scmi_reset RST_SCMI_MCU_HOLD_BOOT>;
+	reset-names =  "mcu_rst", "hold_boot";
 };
 
 &rcc {
diff --git a/arch/arm/boot/dts/stm32mp157c-dk2-scmi.dts b/arch/arm/boot/dts/stm32mp157c-dk2-scmi.dts
index 97e4f94b0a24..c42e658debfb 100644
--- a/arch/arm/boot/dts/stm32mp157c-dk2-scmi.dts
+++ b/arch/arm/boot/dts/stm32mp157c-dk2-scmi.dts
@@ -61,8 +61,10 @@ &mdma1 {
 	resets = <&scmi_reset RST_SCMI_MDMA>;
 };
 
-&mlahb {
-	resets = <&scmi_reset RST_SCMI_MCU>;
+&m4_rproc {
+	resets = <&scmi_reset RST_SCMI_MCU>,
+		 <&scmi_reset RST_SCMI_MCU_HOLD_BOOT>;
+	reset-names =  "mcu_rst", "hold_boot";
 };
 
 &rcc {
diff --git a/arch/arm/boot/dts/stm32mp157c-ed1-scmi.dts b/arch/arm/boot/dts/stm32mp157c-ed1-scmi.dts
index 9cf0a44d2f47..7a56ff2d4185 100644
--- a/arch/arm/boot/dts/stm32mp157c-ed1-scmi.dts
+++ b/arch/arm/boot/dts/stm32mp157c-ed1-scmi.dts
@@ -60,8 +60,10 @@ &mdma1 {
 	resets = <&scmi_reset RST_SCMI_MDMA>;
 };
 
-&mlahb {
-	resets = <&scmi_reset RST_SCMI_MCU>;
+&m4_rproc {
+	resets = <&scmi_reset RST_SCMI_MCU>,
+		 <&scmi_reset RST_SCMI_MCU_HOLD_BOOT>;
+	reset-names =  "mcu_rst", "hold_boot";
 };
 
 &rcc {
diff --git a/arch/arm/boot/dts/stm32mp157c-ev1-scmi.dts b/arch/arm/boot/dts/stm32mp157c-ev1-scmi.dts
index 3b9dd6f4ccc9..119874dd91e4 100644
--- a/arch/arm/boot/dts/stm32mp157c-ev1-scmi.dts
+++ b/arch/arm/boot/dts/stm32mp157c-ev1-scmi.dts
@@ -66,8 +66,10 @@ &mdma1 {
 	resets = <&scmi_reset RST_SCMI_MDMA>;
 };
 
-&mlahb {
-	resets = <&scmi_reset RST_SCMI_MCU>;
+&m4_rproc {
+	resets = <&scmi_reset RST_SCMI_MCU>,
+		 <&scmi_reset RST_SCMI_MCU_HOLD_BOOT>;
+	reset-names =  "mcu_rst", "hold_boot";
 };
 
 &rcc {
-- 
2.25.1