ARM: dts: stm32: Add missing detach mailbox for DHCOM SoM

Add missing "detach" mailbox to this board to permit the CPU to inform
the remote processor on a detach. This signal allows the remote processor
firmware to stop IPC communication and to reinitialize the resources for
a re-attach.

Without this mailbox, detach is not possible and kernel log contains the
following warning to, so make sure all the STM32MP15xx platform DTs are
in sync regarding the mailboxes to fix the detach issue and the warning:
"
stm32-rproc 10000000.m4: mbox_request_channel_byname() could not locate channel named "detach"
"

Fixes: 6257dfc1c412 ("ARM: dts: stm32: Add coprocessor detach mbox on stm32mp15x-dkx boards")
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>

diff --git a/arch/arm/boot/dts/st/stm32mp15xx-dhcom-som.dtsi b/arch/arm/boot/dts/st/stm32mp15xx-dhcom-som.dtsi
index e61df23d361a764dd53d08fc86e476df2f9b5d7e..74a11ccc5333f849acf4ddc8e77f07b1a0f933f3 100644 (file)
--- a/arch/arm/boot/dts/st/stm32mp15xx-dhcom-som.dtsi
+++ b/arch/arm/boot/dts/st/stm32mp15xx-dhcom-som.dtsi
@@ -416,8 +416,8 @@
 &m4_rproc {
        memory-region = <&retram>, <&mcuram>, <&mcuram2>, <&vdev0vring0>,
                        <&vdev0vring1>, <&vdev0buffer>;
-       mboxes = <&ipcc 0>, <&ipcc 1>, <&ipcc 2>;
-       mbox-names = "vq0", "vq1", "shutdown";
+       mboxes = <&ipcc 0>, <&ipcc 1>, <&ipcc 2>, <&ipcc 3>;
+       mbox-names = "vq0", "vq1", "shutdown", "detach";
        interrupt-parent = <&exti>;
        interrupts = <68 1>;
        status = "okay";