[PATCH v2 7/7] arm64: dts: freescale: Add minimal support for S32N79
From: Ciprian Costea <ciprianmarian.costea@oss.nxp.com>
Date: 2026-02-25 13:39:18
Also in:
imx, linux-devicetree, linux-mmc, lkml
Subsystem:
arm/freescale imx / mxc arm architecture, the rest · Maintainers:
Frank Li, Sascha Hauer, Linus Torvalds
From: Ciprian Marian Costea <ciprianmarian.costea@oss.nxp.com> Add device tree support for the NXP S32N79 automotive SoC and the S32N79 Reference Design Board (RDB) [1]. The S32N79 features eight Arm Cortex-A78AE cores organized in four dual-core clusters, with a three-level cache hierarchy (L1/L2 per core, L3 per dual-core cluster) and 32GB of DRAM memory. It includes an SMMUv3 for IOMMU functionality. On S32N79 SoC, peripherals are organized into subsystems, such as: - CIS (Coherent Interconnect Subsystem). - COSS (Connectivity Subsystem) - FSS (Foundation Subsystem) This initial support includes basic peripherals: - GICv3, SMMUv3 from CIS Subsystem - PL011 UARTs and IRQ steering controller from COSS Subsystem - uSDHC from FSS Subsystem Clock and Pin multiplexing settings for the chip are managed over SCMI. [1] https://www.nxp.com/products/processors-and-microcontrollers/s32-automotive-platform/s32n-vehicle-super-integration-processors:S32N Co-developed-by: Larisa Grigore <redacted> Signed-off-by: Larisa Grigore <redacted> Co-developed-by: Andra-Teodora Ilie <redacted> Signed-off-by: Andra-Teodora Ilie <redacted> Co-developed-by: Andrei Cherechesu <redacted> Signed-off-by: Andrei Cherechesu <redacted> Signed-off-by: Ciprian Marian Costea <ciprianmarian.costea@oss.nxp.com> --- arch/arm64/boot/dts/freescale/Makefile | 1 + arch/arm64/boot/dts/freescale/s32n79-rdb.dts | 70 ++++ arch/arm64/boot/dts/freescale/s32n79.dtsi | 362 +++++++++++++++++++ 3 files changed, 433 insertions(+) create mode 100644 arch/arm64/boot/dts/freescale/s32n79-rdb.dts create mode 100644 arch/arm64/boot/dts/freescale/s32n79.dtsi
diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index 700bab4d3e60..e79807bf1820 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile@@ -501,4 +501,5 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mm-phygate-tauri-l-rs232-rs485.dtb dtb-$(CONFIG_ARCH_S32) += s32g274a-evb.dtb dtb-$(CONFIG_ARCH_S32) += s32g274a-rdb2.dtb dtb-$(CONFIG_ARCH_S32) += s32g399a-rdb3.dtb +dtb-$(CONFIG_ARCH_S32) += s32n79-rdb.dtb dtb-$(CONFIG_ARCH_S32) += s32v234-evb.dtb
diff --git a/arch/arm64/boot/dts/freescale/s32n79-rdb.dts b/arch/arm64/boot/dts/freescale/s32n79-rdb.dts
new file mode 100644
index 000000000000..d13eb3a0666b
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/s32n79-rdb.dts@@ -0,0 +1,70 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) +/* + * Copyright 2026 NXP + * + * NXP S32N79 Reference Design Board (S32N79-RDB) + */ + +/dts-v1/; +#include "s32n79.dtsi" + +/ { + compatible = "nxp,s32n79-rdb", "nxp,s32n79"; + model = "NXP S32N79-RDB"; + + aliases { + serial0 = &uart0; + serial1 = &uart5; + serial2 = &uart6; + serial3 = &uart7; + }; + + chosen { + stdout-path = "serial0:115200n8"; + }; + + reserved-memory { + ranges; + #address-cells = <2>; + #size-cells = <2>; + + scmi_shbuf: shm@93000000 { + compatible = "arm,scmi-shmem"; + reg = <0x0 0x93000000 0x0 0x80>; + no-map; + }; + }; + + memory@80000000 { + reg = <0x00 0x80000000 0x00 0x80000000>, + <0x88 0x00000000 0x03 0x40000000>, + <0xc0 0x00000000 0x03 0x40000000>; + device_type = "memory"; + }; +}; + +&irqsteer_coss { + status = "okay"; +}; + +&uart0 { + status = "okay"; +}; + +&uart5 { + status = "okay"; +}; + +&uart6 { + status = "okay"; +}; + +&uart7 { + status = "okay"; +}; + +&usdhc0 { + disable-wp; + no-sdio; + status = "okay"; +};
diff --git a/arch/arm64/boot/dts/freescale/s32n79.dtsi b/arch/arm64/boot/dts/freescale/s32n79.dtsi
new file mode 100644
index 000000000000..94ab58783fdc
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/s32n79.dtsi@@ -0,0 +1,362 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) +/* + * NXP S32N79 SoC + * + * Copyright 2026 NXP + */ + +#include <dt-bindings/interrupt-controller/arm-gic.h> + +/ { + interrupt-parent = <&gic>; + #address-cells = <2>; + #size-cells = <2>; + + cis-bus { + compatible = "simple-bus"; + ranges = <0x4f200000 0x0 0x4f200000 0xc00000>; + #address-cells = <1>; + #size-cells = <1>; + + gic: interrupt-controller@4f200000 { + compatible = "arm,gic-v3"; + reg = <0x4f200000 0x10000>, /* GIC Dist */ + <0x4f260000 0x100000>; + #interrupt-cells = <3>; + interrupt-controller; + interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>; + #address-cells = <1>; + #size-cells = <1>; + /* GICR (RD_base + SGI_base) */ + ranges; + + its: msi-controller@4f240000 { + compatible = "arm,gic-v3-its"; + reg = <0x4f240000 0x20000>; + #msi-cells = <1>; + msi-controller; + }; + }; + + smmu: iommu@4fc00000 { + compatible = "arm,smmu-v3"; + reg = <0x4fc00000 0x200000>; + interrupt-parent = <&gic>; + interrupts = <GIC_SPI 1 IRQ_TYPE_EDGE_RISING>, + <GIC_SPI 4 IRQ_TYPE_EDGE_RISING>, + <GIC_SPI 8 IRQ_TYPE_EDGE_RISING>, + <GIC_SPI 2 IRQ_TYPE_EDGE_RISING>; + interrupt-names = "eventq", "gerror", "priq", "cmdq-sync"; + #iommu-cells = <1>; + dma-coherent; + status = "disabled"; + }; + }; + + coss-bus { + compatible = "simple-bus"; + ranges = <0x4a000000 0x0 0x4a000000 0xff0000>, + <0x4e000000 0x0 0x4e000000 0x1000000>; + #address-cells = <1>; + #size-cells = <1>; + + uart0: serial@4a030000 { + compatible = "arm,pl011", "arm,primecell"; + reg = <0x4a030000 0x1000>; + interrupt-parent = <&irqsteer_coss>; + interrupts = <264>; + clocks = <&clks 0x9a>, <&clks 0x9a>; + clock-names = "uartclk", "apb_pclk"; + status = "disabled"; + }; + + uart5: serial@4a060000 { + compatible = "arm,pl011", "arm,primecell"; + reg = <0x4a060000 0x1000>; + interrupt-parent = <&irqsteer_coss>; + interrupts = <269>; + clocks = <&clks 0x9a>, <&clks 0x9a>; + clock-names = "uartclk", "apb_pclk"; + status = "disabled"; + }; + + uart6: serial@4aa30000 { + compatible = "arm,pl011", "arm,primecell"; + reg = <0x4aa30000 0x1000>; + interrupt-parent = <&irqsteer_coss>; + interrupts = <270>; + clocks = <&clks 0x9a>, <&clks 0x9a>; + clock-names = "uartclk", "apb_pclk"; + status = "disabled"; + }; + + uart7: serial@4aa40000 { + compatible = "arm,pl011", "arm,primecell"; + reg = <0x4aa40000 0x1000>; + interrupt-parent = <&irqsteer_coss>; + interrupts = <271>; + clocks = <&clks 0x9a>, <&clks 0x9a>; + clock-names = "uartclk", "apb_pclk"; + status = "disabled"; + }; + + irqsteer_coss: interrupt-controller@4ed00000 { + compatible = "nxp,s32n79-irqsteer"; + reg = <0x4ed00000 0x10000>; + #interrupt-cells = <1>; + interrupt-controller; + interrupt-parent = <&gic>; + interrupts = <GIC_SPI 527 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 528 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 529 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 530 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 531 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 532 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 533 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 534 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&clks 0x9a>; + clock-names = "ipg"; + fsl,channel = <0>; + fsl,num-irqs = <512>; + status = "disabled"; + }; + }; + + cpus { + #address-cells = <1>; + #size-cells = <0>; + + cpu-map { + cluster0 { + core0 { + cpu = <&cpu0>; + }; + + core1 { + cpu = <&cpu1>; + }; + }; + + cluster1 { + core0 { + cpu = <&cpu2>; + }; + + core1 { + cpu = <&cpu3>; + }; + }; + + cluster2 { + core0 { + cpu = <&cpu4>; + }; + + core1 { + cpu = <&cpu5>; + }; + }; + + cluster3 { + core0 { + cpu = <&cpu6>; + }; + + core1 { + cpu = <&cpu7>; + }; + }; + }; + + l2_0: l2-cache0 { + compatible = "cache"; + cache-level = <2>; + cache-line-size = <64>; + cache-sets = <512>; + cache-size = <524288>; + cache-unified; + next-level-cache = <&l3_0>; + }; + + l2_1: l2-cache1 { + compatible = "cache"; + cache-level = <2>; + cache-line-size = <64>; + cache-sets = <512>; + cache-size = <524288>; + cache-unified; + next-level-cache = <&l3_1>; + }; + + l2_2: l2-cache2 { + compatible = "cache"; + cache-level = <2>; + cache-line-size = <64>; + cache-sets = <512>; + cache-size = <524288>; + cache-unified; + next-level-cache = <&l3_2>; + }; + + l2_3: l2-cache3 { + compatible = "cache"; + cache-level = <2>; + cache-line-size = <64>; + cache-sets = <512>; + cache-size = <524288>; + cache-unified; + next-level-cache = <&l3_3>; + }; + + l3_0: l3-cache0 { + compatible = "cache"; + cache-level = <3>; + cache-line-size = <64>; + cache-sets = <1024>; + cache-size = <1048576>; + cache-unified; + }; + + l3_1: l3-cache1 { + compatible = "cache"; + cache-level = <3>; + cache-line-size = <64>; + cache-sets = <1024>; + cache-size = <1048576>; + cache-unified; + }; + + l3_2: l3-cache2 { + compatible = "cache"; + cache-level = <3>; + cache-line-size = <64>; + cache-sets = <1024>; + cache-size = <1048576>; + cache-unified; + }; + + l3_3: l3-cache3 { + compatible = "cache"; + cache-level = <3>; + cache-line-size = <64>; + cache-sets = <1024>; + cache-size = <1048576>; + cache-unified; + }; + + cpu0: cpu@0 { + compatible = "arm,cortex-a78ae"; + reg = <0x0>; + device_type = "cpu"; + enable-method = "psci"; + next-level-cache = <&l2_0>; + }; + + cpu1: cpu@100 { + compatible = "arm,cortex-a78ae"; + reg = <0x100>; + device_type = "cpu"; + enable-method = "psci"; + next-level-cache = <&l2_0>; + }; + + cpu2: cpu@10000 { + compatible = "arm,cortex-a78ae"; + reg = <0x10000>; + device_type = "cpu"; + enable-method = "psci"; + next-level-cache = <&l2_1>; + }; + + cpu3: cpu@10100 { + compatible = "arm,cortex-a78ae"; + reg = <0x10100>; + device_type = "cpu"; + enable-method = "psci"; + next-level-cache = <&l2_1>; + }; + + cpu4: cpu@20000 { + compatible = "arm,cortex-a78ae"; + reg = <0x20000>; + device_type = "cpu"; + enable-method = "psci"; + next-level-cache = <&l2_2>; + }; + + cpu5: cpu@20100 { + compatible = "arm,cortex-a78ae"; + reg = <0x20100>; + device_type = "cpu"; + enable-method = "psci"; + next-level-cache = <&l2_2>; + }; + + cpu6: cpu@30000 { + compatible = "arm,cortex-a78ae"; + reg = <0x30000>; + device_type = "cpu"; + enable-method = "psci"; + next-level-cache = <&l2_3>; + }; + + cpu7: cpu@30100 { + compatible = "arm,cortex-a78ae"; + reg = <0x30100>; + device_type = "cpu"; + enable-method = "psci"; + next-level-cache = <&l2_3>; + }; + }; + + firmware { + psci { + compatible = "arm,psci-1.0"; + method = "smc"; + }; + + scmi: scmi { + compatible = "arm,scmi-smc"; + #address-cells = <1>; + #size-cells = <0>; + shmem = <&scmi_shbuf>; + arm,smc-id = <0xc20000fe>; + status = "okay"; + + clks: protocol@14 { + reg = <0x14>; + #clock-cells = <1>; + }; + }; + }; + + fss-bus { + compatible = "simple-bus"; + ranges = <0x5b490000 0x0 0x5b490000 0x1000>; + #address-cells = <1>; + #size-cells = <1>; + + usdhc0: mmc@5b490000 { + compatible = "nxp,s32n79-usdhc"; + reg = <0x5b490000 0x1000>; + interrupts = <GIC_SPI 472 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&clks 0x58>, <&clks 0x50>, <&clks 0x5f>; + clock-names = "ipg", "ahb", "per"; + bus-width = <8>; + status = "disabled"; + }; + }; + + pmu: pmu { + compatible = "arm,armv8-pmuv3"; + interrupts = <GIC_PPI 7 IRQ_TYPE_LEVEL_HIGH>; + }; + + timer: timer { + compatible = "arm,armv8-timer"; + interrupts = <GIC_PPI 13 IRQ_TYPE_LEVEL_LOW>, + <GIC_PPI 14 IRQ_TYPE_LEVEL_LOW>, + <GIC_PPI 11 IRQ_TYPE_LEVEL_LOW>, + <GIC_PPI 10 IRQ_TYPE_LEVEL_LOW>; + }; +};
--
2.43.0