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The reserved memory includes firmware memory, virtio device vring buffers, a resource table and a shared DMA pool for inter-processor communication via the MU7 mailbox. Signed-off-by: Peng Fan --- arch/arm64/boot/dts/freescale/imx95-19x19-evk.dts | 46 +++++++++++++++++++= ++++ 1 file changed, 46 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx95-19x19-evk.dts b/arch/arm64= /boot/dts/freescale/imx95-19x19-evk.dts index 340ab0253ec21..e7d1afc6e1b8e 100644 --- a/arch/arm64/boot/dts/freescale/imx95-19x19-evk.dts +++ b/arch/arm64/boot/dts/freescale/imx95-19x19-evk.dts @@ -76,6 +76,42 @@ linux_cma: linux,cma { linux,cma-default; reusable; }; + + m7_reserved: memory@80000000 { + no-map; + reg =3D <0 0x80000000 0 0x1000000>; + }; + + vdev0vring0: vdev0vring0@88000000 { + reg =3D <0 0x88000000 0 0x8000>; + no-map; + }; + + vdev0vring1: vdev0vring1@88008000 { + reg =3D <0 0x88008000 0 0x8000>; + no-map; + }; + + vdev1vring0: vdev1vring0@88010000 { + reg =3D <0 0x88010000 0 0x8000>; + no-map; + }; + + vdev1vring1: vdev1vring1@88018000 { + reg =3D <0 0x88018000 0 0x8000>; + no-map; + }; + + rsc_table: rsc-table@88220000 { + reg =3D <0 0x88220000 0 0x1000>; + no-map; + }; + + vdevbuffer: vdevbuffer@88020000 { + compatible =3D "shared-dma-pool"; + reg =3D <0 0x88020000 0 0x100000>; + no-map; + }; }; =20 flexcan1_phy: can-phy0 { @@ -185,6 +221,16 @@ reg_usb_vbus: regulator-vbus { enable-active-high; }; =20 + remoteproc-cm7 { + compatible =3D "fsl,imx95-cm7"; + mbox-names =3D "tx", "rx", "rxdb"; + mboxes =3D <&mu7 0 1 + &mu7 1 1 + &mu7 3 1>; + memory-region =3D <&vdevbuffer>, <&vdev0vring0>, <&vdev0vring1>, + <&vdev1vring0>, <&vdev1vring1>, <&rsc_table>, <&m7_reserved>; + }; + sound-bt-sco { compatible =3D "simple-audio-card"; simple-audio-card,name =3D "bt-sco-audio"; --=20 2.34.1 From nobody Sat Jul 25 18:07:53 2026 Received: from PA4PR04CU001.outbound.protection.outlook.com (mail-francecentralazon11013061.outbound.protection.outlook.com [40.107.162.61]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2F48632E75A; Wed, 15 Jul 2026 07:07:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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The reserved memory includes firmware memory, virtio device vring buffers and a resource table for inter-processor communication via the MU7 mailbox. Signed-off-by: Peng Fan --- arch/arm64/boot/dts/freescale/imx952-evk.dts | 50 ++++++++++++++++++++++++= ++++ 1 file changed, 50 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx952-evk.dts b/arch/arm64/boot= /dts/freescale/imx952-evk.dts index 62d1c1c7c5013..fec851544fb11 100644 --- a/arch/arm64/boot/dts/freescale/imx952-evk.dts +++ b/arch/arm64/boot/dts/freescale/imx952-evk.dts @@ -82,6 +82,42 @@ linux_cma: linux,cma { linux,cma-default; reusable; }; + + m7_reserved: memory@80000000 { + no-map; + reg =3D <0 0x80000000 0 0x1000000>; + }; + + vdev0vring0: vdev0vring0@88000000 { + reg =3D <0 0x88000000 0 0x8000>; + no-map; + }; + + vdev0vring1: vdev0vring1@88008000 { + reg =3D <0 0x88008000 0 0x8000>; + no-map; + }; + + vdev1vring0: vdev1vring0@88010000 { + reg =3D <0 0x88010000 0 0x8000>; + no-map; + }; + + vdev1vring1: vdev1vring1@88018000 { + reg =3D <0 0x88018000 0 0x8000>; + no-map; + }; + + vdevbuffer: vdevbuffer@88020000 { + compatible =3D "shared-dma-pool"; + reg =3D <0 0x88020000 0 0x100000>; + no-map; + }; + + rsc_table: rsc-table@88220000 { + reg =3D <0 0x88220000 0 0x1000>; + no-map; + }; }; =20 flexcan1_phy: can-phy0 { @@ -151,6 +187,16 @@ reg_usb_vbus: regulator-vbus { enable-active-high; }; =20 + remoteproc-cm7 { + compatible =3D "fsl,imx95-cm7"; + mbox-names =3D "tx", "rx", "rxdb"; + mboxes =3D <&mu7 0 1 + &mu7 1 1 + &mu7 3 1>; + memory-region =3D <&vdevbuffer>, <&vdev0vring0>, <&vdev0vring1>, + <&vdev1vring0>, <&vdev1vring1>, <&rsc_table>, <&m7_reserved>; + }; + sound-bt-sco { compatible =3D "simple-audio-card"; simple-audio-card,bitclock-inversion; @@ -451,6 +497,10 @@ &micfil { status =3D "okay"; }; =20 +&mu7 { + status =3D "okay"; +}; + &sai1 { assigned-clocks =3D <&scmi_clk IMX952_CLK_AUDIOPLL1_VCO>, <&scmi_clk IMX952_CLK_AUDIOPLL2_VCO>, --=20 2.34.1 From nobody Sat Jul 25 18:07:53 2026 Received: from PA4PR04CU001.outbound.protection.outlook.com (mail-francecentralazon11013061.outbound.protection.outlook.com [40.107.162.61]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 85A60330B15; 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Enable the MU11, MU13 and MU15 mailbox units used for inter-processor communication with each remote processor. Signed-off-by: Peng Fan --- arch/arm64/boot/dts/freescale/imx943-evk.dts | 135 +++++++++++++++++++++++= ++++ 1 file changed, 135 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx943-evk.dts b/arch/arm64/boot= /dts/freescale/imx943-evk.dts index 674410e541cba..da7bfbd52e312 100644 --- a/arch/arm64/boot/dts/freescale/imx943-evk.dts +++ b/arch/arm64/boot/dts/freescale/imx943-evk.dts @@ -133,6 +133,36 @@ reg_audio_pwr: regulator-wm8962-pwr { enable-active-high; }; =20 + remoteproc-cm70 { + compatible =3D "fsl,imx94-cm70"; + mbox-names =3D "tx", "rx", "rxdb"; + mboxes =3D <&mu11 0 1 + &mu11 1 1 + &mu11 3 1>; + memory-region =3D <&cm70_vdevbuffer>, <&cm70_vdev0vring0>, <&cm70_vdev0v= ring1>, + <&cm70_vdev1vring0>, <&cm70_vdev1vring1>, <&cm70_rsc_table>; + }; + + remoteproc-cm71 { + compatible =3D "fsl,imx94-cm71"; + mbox-names =3D "tx", "rx", "rxdb"; + mboxes =3D <&mu13 0 1 + &mu13 1 1 + &mu13 3 1>; + memory-region =3D <&cm71_vdevbuffer>, <&cm71_vdev0vring0>, <&cm71_vdev0v= ring1>, + <&cm71_vdev1vring0>, <&cm71_vdev1vring1>, <&cm71_rsc_table>; + }; + + remoteproc-cm33s { + compatible =3D "fsl,imx94-cm33s"; + mbox-names =3D "tx", "rx", "rxdb"; + mboxes =3D <&mu15 0 1 + &mu15 1 1 + &mu15 3 1>; + memory-region =3D <&cm33s_vdevbuffer>, <&cm33s_vdev0vring0>, <&cm33s_vde= v0vring1>, + <&cm33s_vdev1vring0>, <&cm33s_vdev1vring1>, <&cm33s_rsc_table>; + }; + reserved-memory { ranges; #address-cells =3D <2>; @@ -145,6 +175,99 @@ linux,cma { size =3D <0 0x10000000>; linux,cma-default; }; + + cm33s_vdev0vring0: vdev0vring0@20800000 { + reg =3D <0 0x20800000 0 0x8000>; + no-map; + }; + + cm33s_vdev0vring1: vdev0vring1@20808000 { + reg =3D <0 0x20808000 0 0x8000>; + no-map; + }; + + cm33s_vdev1vring0: vdev1vring0@20810000 { + reg =3D <0 0x20810000 0 0x8000>; + no-map; + }; + + cm33s_vdev1vring1: vdev1vring1@20818000 { + reg =3D <0 0x20818000 0 0x8000>; + no-map; + }; + + cm33s_rsc_table: rsc-table@208a0000 { + reg =3D <0 0x208a0000 0 0x1000>; + no-map; + }; + + cm33s_vdevbuffer: vdevbuffer@20820000 { + compatible =3D "shared-dma-pool"; + reg =3D <0 0x20820000 0 0x80000>; + no-map; + }; + + cm70_vdev0vring0: vdev0vring0@82000000 { + reg =3D <0 0x82000000 0 0x8000>; + no-map; + }; + + cm70_vdev0vring1: vdev0vring1@82008000 { + reg =3D <0 0x82008000 0 0x8000>; + no-map; + }; + + cm70_vdev1vring0: vdev1vring0@82010000 { + reg =3D <0 0x82010000 0 0x8000>; + no-map; + }; + + cm70_vdev1vring1: vdev1vring1@82018000 { + reg =3D <0 0x82018000 0 0x8000>; + no-map; + }; + + cm70_rsc_table: rsc-table@82220000 { + reg =3D <0 0x82220000 0 0x1000>; + no-map; + }; + + cm70_vdevbuffer: vdevbuffer@82020000 { + compatible =3D "shared-dma-pool"; + reg =3D <0 0x82020000 0 0x100000>; + no-map; + }; + + cm71_vdev0vring0: vdev0vring0@84000000 { + reg =3D <0 0x84000000 0 0x8000>; + no-map; + }; + + cm71_vdev0vring1: vdev0vring1@84008000 { + reg =3D <0 0x84008000 0 0x8000>; + no-map; + }; + + cm71_vdev1vring0: vdev1vring0@84010000 { + reg =3D <0 0x84010000 0 0x8000>; + no-map; + }; + + cm71_vdev1vring1: vdev1vring1@84018000 { + reg =3D <0 0x84018000 0 0x8000>; + no-map; + }; + + cm71_rsc_table: rsc-table@84220000 { + reg =3D <0 0x84220000 0 0x1000>; + no-map; + }; + + cm71_vdevbuffer: vdevbuffer@84020000 { + compatible =3D "shared-dma-pool"; + reg =3D <0 0x84020000 0 0x100000>; + no-map; + }; }; =20 sound-bt-sco { @@ -592,6 +715,18 @@ &micfil { status =3D "okay"; }; =20 +&mu11 { + status =3D "okay"; +}; + +&mu13 { + status =3D "okay"; +}; + +&mu15 { + status =3D "okay"; +}; + &netc_blk_ctrl { assigned-clocks =3D <&scmi_clk IMX94_CLK_MAC4>, <&scmi_clk IMX94_CLK_MAC5>; --=20 2.34.1 From nobody Sat Jul 25 18:07:53 2026 Received: from MRWPR03CU001.outbound.protection.outlook.com (mail-francesouthazon11011056.outbound.protection.outlook.com [40.107.130.56]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B36A333C188; Wed, 15 Jul 2026 07:07:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.107.130.56 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784099266; cv=fail; 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However, this address is occupied by variables used in the MCU firmware, so copying the rsc table there corrupts those variables. Move the rsc-table reserved memory region from 0x1FFF8000 to 0x20000000 to avoid the conflict. The M33 firmware linker script has been updated accordingly to place the rpmsg resource table at 0x20000000 (DTCM m_rsc_tbl region). Signed-off-by: Biwen Li Signed-off-by: Peng Fan --- arch/arm64/boot/dts/freescale/imx8ulp-evk.dts | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts b/arch/arm64/boo= t/dts/freescale/imx8ulp-evk.dts index 5dea66c1e7aa0..0f9d55e811391 100644 --- a/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts +++ b/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts @@ -42,8 +42,8 @@ m33_reserved: noncacheable-section@a8600000 { no-map; }; =20 - rsc_table: rsc-table@1fff8000 { - reg =3D <0 0x1fff8000 0 0x1000>; + rsc_table: rsc-table@20000000 { + reg =3D <0 0x20000000 0 0x1000>; no-map; }; =20 --=20 2.34.1