[PATCH v6 4/5] arm64: dts: freescale: Add NXP S32N79 SoC support
Ciprian Marian Costea
ciprianmarian.costea at oss.nxp.com
Thu Mar 12 05:46:58 PDT 2026
On 3/11/2026 10:11 AM, Ciprian Costea wrote:
> From: Ciprian Marian Costea <ciprianmarian.costea at oss.nxp.com>
>
> Add device tree support for the NXP S32N79 automotive SoC [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 <larisa.grigore at nxp.com>
> Signed-off-by: Larisa Grigore <larisa.grigore at nxp.com>
> Co-developed-by: Andra-Teodora Ilie <andra.ilie at nxp.com>
> Signed-off-by: Andra-Teodora Ilie <andra.ilie at nxp.com>
> Co-developed-by: Andrei Cherechesu <andrei.cherechesu at nxp.com>
> Signed-off-by: Andrei Cherechesu <andrei.cherechesu at nxp.com>
> Signed-off-by: Ciprian Marian Costea <ciprianmarian.costea at oss.nxp.com>
> ---
> arch/arm64/boot/dts/freescale/s32n79.dtsi | 362 ++++++++++++++++++++++
> 1 file changed, 362 insertions(+)
> create mode 100644 arch/arm64/boot/dts/freescale/s32n79.dtsi
>
Hello Frank,
Sorry for reaching out again. Did you have a change to look at the
latest dtsi & dts patches from V6 ? I've addressed your previous
comments. Are they acceptable in the current state ?
Best Regards,
Ciprian
> 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 at 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 at 4f240000 {
> + compatible = "arm,gic-v3-its";
> + reg = <0x4f240000 0x20000>;
> + #msi-cells = <1>;
> + msi-controller;
> + };
> + };
> +
> + smmu: iommu at 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 at 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 at 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 at 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 at 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 at 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 at 0 {
> + compatible = "arm,cortex-a78ae";
> + reg = <0x0>;
> + device_type = "cpu";
> + enable-method = "psci";
> + next-level-cache = <&l2_0>;
> + };
> +
> + cpu1: cpu at 100 {
> + compatible = "arm,cortex-a78ae";
> + reg = <0x100>;
> + device_type = "cpu";
> + enable-method = "psci";
> + next-level-cache = <&l2_0>;
> + };
> +
> + cpu2: cpu at 10000 {
> + compatible = "arm,cortex-a78ae";
> + reg = <0x10000>;
> + device_type = "cpu";
> + enable-method = "psci";
> + next-level-cache = <&l2_1>;
> + };
> +
> + cpu3: cpu at 10100 {
> + compatible = "arm,cortex-a78ae";
> + reg = <0x10100>;
> + device_type = "cpu";
> + enable-method = "psci";
> + next-level-cache = <&l2_1>;
> + };
> +
> + cpu4: cpu at 20000 {
> + compatible = "arm,cortex-a78ae";
> + reg = <0x20000>;
> + device_type = "cpu";
> + enable-method = "psci";
> + next-level-cache = <&l2_2>;
> + };
> +
> + cpu5: cpu at 20100 {
> + compatible = "arm,cortex-a78ae";
> + reg = <0x20100>;
> + device_type = "cpu";
> + enable-method = "psci";
> + next-level-cache = <&l2_2>;
> + };
> +
> + cpu6: cpu at 30000 {
> + compatible = "arm,cortex-a78ae";
> + reg = <0x30000>;
> + device_type = "cpu";
> + enable-method = "psci";
> + next-level-cache = <&l2_3>;
> + };
> +
> + cpu7: cpu at 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 at 14 {
> + reg = <0x14>;
> + #clock-cells = <1>;
> + };
> + };
> + };
> +
> + fss-bus {
> + compatible = "simple-bus";
> + ranges = <0x5b490000 0x0 0x5b490000 0x1000>;
> + #address-cells = <1>;
> + #size-cells = <1>;
> +
> + usdhc0: mmc at 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>;
> + };
> +};
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