[PATCH v2] arm64: dts: freescale: imx95-toradex-smarc: Support Cortex M7
From: Emanuele Ghidoli <ghidoliemanuele@gmail.com>
Date: 2026-03-03 21:01:43
Also in:
imx, linux-devicetree, lkml
Subsystem:
arm/freescale imx / mxc arm architecture, the rest · Maintainers:
Frank Li, Sascha Hauer, Linus Torvalds
From: Emanuele Ghidoli <redacted> Enable Cortex M7, the vring nodes, a mailbox and reserve DDR memory for the M7. The remoteproc framework is so capable to load and run the M7 firmware. Signed-off-by: Emanuele Ghidoli <redacted> --- Changes in v2: - Use necessary node names (rsc-table, vdev*) v1: https://lore.kernel.org/lkml/20260303121324.1576841-1-ghidoliemanuele@gmail.com/ (local) .../dts/freescale/imx95-toradex-smarc.dtsi | 50 +++++++++++++++++++ 1 file changed, 50 insertions(+)
diff --git a/arch/arm64/boot/dts/freescale/imx95-toradex-smarc.dtsi b/arch/arm64/boot/dts/freescale/imx95-toradex-smarc.dtsi
index 5932ba238a8a..748fd7d9e7e0 100644
--- a/arch/arm64/boot/dts/freescale/imx95-toradex-smarc.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx95-toradex-smarc.dtsi@@ -42,6 +42,16 @@ clk_serdes_eth_ref: clock-eth-ref { enable-gpios = <&som_gpio_expander_1 13 GPIO_ACTIVE_HIGH>; }; + cm7: remoteproc-cm7 { + compatible = "fsl,imx95-cm7"; + mbox-names = "tx", "rx", "rxdb"; + mboxes = <&mu7 0 1 + &mu7 1 1 + &mu7 3 1>; + memory-region = <&vdevbuffer>, <&vdev0vring0>, <&vdev0vring1>, + <&vdev1vring0>, <&vdev1vring1>, <&rsc_table>, <&m7_reserved>; + }; + connector { compatible = "gpio-usb-b-connector", "usb-b-connector"; /* SMARC P64 - USB0_OTG_ID */
@@ -156,6 +166,42 @@ linux_cma: linux,cma { alloc-ranges = <0 0x80000000 0 0x7f000000>; linux,cma-default; }; + + m7_reserved: memory@80000000 { + reg = <0 0x80000000 0 0x1000000>; + no-map; + }; + + rsc_table: rsc-table@88220000 { + reg = <0 0x88220000 0 0x1000>; + no-map; + }; + + vdev0vring0: vdev0vring0@88000000 { + reg = <0 0x88000000 0 0x8000>; + no-map; + }; + + vdev0vring1: vdev0vring1@88008000 { + reg = <0 0x88008000 0 0x8000>; + no-map; + }; + + vdev1vring0: vdev1vring0@88010000 { + reg = <0 0x88010000 0 0x8000>; + no-map; + }; + + vdev1vring1: vdev1vring1@88018000 { + reg = <0 0x88018000 0 0x8000>; + no-map; + }; + + vdevbuffer: vdevbuffer@88020000 { + compatible = "shared-dma-pool"; + reg = <0 0x88020000 0 0x100000>; + no-map; + }; }; };
@@ -572,6 +618,10 @@ &lpuart3 { pinctrl-0 = <&pinctrl_uart3>; }; +&mu7 { + status = "okay"; +}; + /* SMARC MDIO, shared between all ethernet ports */ &netc_emdio { pinctrl-names = "default";
--
2.43.0