From: Marek Vasut <marex@nabladev.com>
To: linux-arm-kernel@lists.infradead.org
Cc: Marek Vasut <marex@nabladev.com>,
Conor Dooley <conor+dt@kernel.org>,
Fabio Estevam <festevam@gmail.com>, Frank Li <Frank.Li@nxp.com>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Rob Herring <robh@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
devicetree@vger.kernel.org, imx@lists.linux.dev,
linux-kernel@vger.kernel.org
Subject: [PATCH v3 4/6] arm64: dts: imx8mm: imx8mp: Add CM DTOs for Data Modul i.MX8M Mini and Plus eDM SBC
Date: Tue, 7 Apr 2026 23:17:30 +0200 [thread overview]
Message-ID: <20260407211850.79881-4-marex@nabladev.com> (raw)
In-Reply-To: <20260407211850.79881-1-marex@nabladev.com>
Add DT overlay which adds CM4/CM7 extras so that CM4/CM7 firmware could
be used with remoteproc and rpmsg, but without imposing the overhead
on every user of the platform. The CM4 variant applies to i.MX8M Mini,
while the CM7 variant applies to i.MX8M Plus .
Signed-off-by: Marek Vasut <marex@nabladev.com>
---
Cc: Conor Dooley <conor+dt@kernel.org>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Frank Li <Frank.Li@nxp.com>
Cc: Krzysztof Kozlowski <krzk+dt@kernel.org>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Rob Herring <robh@kernel.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: devicetree@vger.kernel.org
Cc: imx@lists.linux.dev
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
V2: Deduplicate the DTOs further
V3: New patch split from the original megapatch
---
arch/arm64/boot/dts/freescale/Makefile | 12 ++++
...imx8mm-data-modul-edm-sbc-overlay-cm4.dtso | 56 ++++++++++++++++++
...imx8mp-data-modul-edm-sbc-overlay-cm7.dtso | 57 +++++++++++++++++++
3 files changed, 125 insertions(+)
create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-data-modul-edm-sbc-overlay-cm4.dtso
create mode 100644 arch/arm64/boot/dts/freescale/imx8mp-data-modul-edm-sbc-overlay-cm7.dtso
diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index 679346cd35d95..2dc1c1b6d81f8 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -116,6 +116,10 @@ dtb-$(CONFIG_ARCH_MXC) += imx8dxp-tqma8xdp-mba8xx.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8dxp-tqma8xdps-mb-smarc-2.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mm-beacon-kit.dtb
+imx8mm-data-modul-edm-sbc-overlay-cm4-dtbs := \
+ imx8mm-data-modul-edm-sbc.dtb \
+ imx8mm-data-modul-edm-sbc-overlay-cm4.dtbo
+
imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi-dtbs := \
imx8mm-data-modul-edm-sbc.dtb \
imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtbo
@@ -153,6 +157,8 @@ imx8mm-data-modul-edm-sbc-overlay-edm-sbc-imx8mm-rev900-dtbs := \
imx8mm-data-modul-edm-sbc-overlay-edm-sbc-imx8mm-rev900.dtbo
dtb-$(CONFIG_ARCH_MXC) += imx8mm-data-modul-edm-sbc.dtb \
+ imx8mm-data-modul-edm-sbc-overlay-cm4.dtb \
+ imx8mm-data-modul-edm-sbc-overlay-cm4.dtbo \
imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtb \
imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtbo \
imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-lvds-g070y2-l01.dtb \
@@ -294,6 +300,10 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mp-beacon-kit.dtb
DTC_FLAGS_imx8mp-cubox-m := -@
dtb-$(CONFIG_ARCH_MXC) += imx8mp-cubox-m.dtb
+imx8mp-data-modul-edm-sbc-overlay-cm7-dtbs := \
+ imx8mp-data-modul-edm-sbc.dtb \
+ imx8mp-data-modul-edm-sbc-overlay-cm7.dtbo
+
imx8mp-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi-dtbs := \
imx8mp-data-modul-edm-sbc.dtb \
imx8mp-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtbo
@@ -373,6 +383,8 @@ imx8mp-data-modul-edm-sbc-overlay-edm-sbc-imx8mp-rev902-dtbs := \
imx8mp-data-modul-edm-sbc-overlay-edm-sbc-imx8mp-rev902.dtbo
dtb-$(CONFIG_ARCH_MXC) += imx8mp-data-modul-edm-sbc.dtb \
+ imx8mp-data-modul-edm-sbc-overlay-cm7.dtb \
+ imx8mp-data-modul-edm-sbc-overlay-cm7.dtbo \
imx8mp-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtb \
imx8mp-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtbo \
imx8mp-data-modul-edm-sbc-overlay-edm-mod-imx8mm-lvds-g070y2-l01.dtb \
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-data-modul-edm-sbc-overlay-cm4.dtso b/arch/arm64/boot/dts/freescale/imx8mm-data-modul-edm-sbc-overlay-cm4.dtso
new file mode 100644
index 0000000000000..8d681c0eff0d4
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mm-data-modul-edm-sbc-overlay-cm4.dtso
@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (C) 2023-2026 Marek Vasut
+ */
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/clock/imx8mm-clock.h>
+
+&{/} {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ reserved-memory { /* CM4 reserved memory */
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+
+ m_core_reserved: m_core@b7000000 {
+ reg = <0 0xb7000000 0 0x1000000>;
+ no-map;
+ };
+
+ vdev0vring0: vdev0vring0@b8000000 {
+ reg = <0 0xb8000000 0 0x8000>;
+ no-map;
+ };
+
+ vdev0vring1: vdev0vring1@b8008000 {
+ reg = <0 0xb8008000 0 0x8000>;
+ no-map;
+ };
+
+ rsc_table: rsc-table@b80ff000 {
+ reg = <0 0xb80ff000 0 0x1000>;
+ no-map;
+ };
+
+ vdevbuffer: vdevbuffer@b8400000 {
+ compatible = "shared-dma-pool";
+ reg = <0 0xb8400000 0 0x100000>;
+ no-map;
+ };
+ };
+
+ imx8mm-cm4 {
+ compatible = "fsl,imx8mm-cm4";
+ clocks = <&clk IMX8MM_CLK_M4_CORE>;
+ mbox-names = "tx", "rx", "rxdb";
+ mboxes = <&mu 0 1
+ &mu 1 1
+ &mu 3 1>;
+ memory-region = <&vdevbuffer>, <&vdev0vring0>, <&vdev0vring1>, <&rsc_table>;
+ syscon = <&src>;
+ };
+};
diff --git a/arch/arm64/boot/dts/freescale/imx8mp-data-modul-edm-sbc-overlay-cm7.dtso b/arch/arm64/boot/dts/freescale/imx8mp-data-modul-edm-sbc-overlay-cm7.dtso
new file mode 100644
index 0000000000000..21e2a8c0bab0a
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mp-data-modul-edm-sbc-overlay-cm7.dtso
@@ -0,0 +1,57 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (C) 2023-2026 Marek Vasut
+ */
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/clock/imx8mp-clock.h>
+
+&{/} {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ reserved-memory { /* CM7 reserved memory */
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+
+ m_core_reserved: m_core@54000000 {
+ reg = <0 0x54000000 0 0x1000000>;
+ no-map;
+ };
+
+ vdev0vring0: vdev0vring0@55000000 {
+ reg = <0 0x55000000 0 0x8000>;
+ no-map;
+ };
+
+ vdev0vring1: vdev0vring1@55008000 {
+ reg = <0 0x55008000 0 0x8000>;
+ no-map;
+ };
+
+ rsc_table: rsc-table@550ff000 {
+ reg = <0 0x550ff000 0 0x1000>;
+ no-map;
+ };
+
+ vdevbuffer: vdevbuffer@55400000 {
+ compatible = "shared-dma-pool";
+ reg = <0 0x55400000 0 0x100000>;
+ no-map;
+ };
+ };
+
+ imx8mp-cm7 {
+ compatible = "fsl,imx8mp-cm7-mmio";
+ clocks = <&clk IMX8MP_CLK_M7_CORE>;
+ fsl,iomuxc-gpr = <&gpr>;
+ mbox-names = "tx", "rx", "rxdb";
+ mboxes = <&mu 0 1
+ &mu 1 1
+ &mu 3 1>;
+ memory-region = <&vdevbuffer>, <&vdev0vring0>, <&vdev0vring1>, <&rsc_table>;
+ syscon = <&src>;
+ };
+};
--
2.53.0
next prev parent reply other threads:[~2026-04-07 21:19 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-07 21:17 [PATCH v3 1/6] arm64: dts: imx8mm: imx8mp: Add LVDS DTOs for Data Modul i.MX8M Mini and Plus eDM SBC Marek Vasut
2026-04-07 21:17 ` [PATCH v3 2/6] arm64: dts: imx8mm: imx8mp: Add legacy board " Marek Vasut
2026-04-07 21:17 ` [PATCH v3 3/6] arm64: dts: imx8mm: imx8mp: Add HDMI " Marek Vasut
2026-04-07 21:17 ` Marek Vasut [this message]
2026-04-07 21:17 ` [PATCH v3 5/6] arm64: dts: imx8mm: imx8mp: Add FIO1 " Marek Vasut
2026-04-07 21:17 ` [PATCH v3 6/6] arm64: dts: imx8mm: imx8mp: Add FIO1-Audio " Marek Vasut
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