[PATCH v7 8/9] arm64: dts: cix: Add sky1 base dts initial support

Peter Chen
2025-05-06T09:07:59Z

CIX SKY1 SoC is high performance Armv9 SoC designed by Cixtech,
and Orion O6 is the motherboard launched by Radxa. See below for
detail:
https://docs.radxa.com/en/orion/o6/getting-started/introduction

In this commit, it only adds limited components for running initramfs
at Orion O6.

Tested-by: Enric Balletbo i Serra <eballetb@redhat.com>
Tested-by: Kajetan Puchalski <kajetan.puchalski@arm.com>
Signed-off-by: Peter Chen <peter.chen@cixtech.com>
Signed-off-by: Guomin Chen <Guomin.Chen@cixtech.com>
Signed-off-by: Gary Yang <gary.yang@cixtech.com>
---
Changes for v7:
- Refine *_scmi_mem nodes for their properties ordering
- Delete Krzysztof Kozlowski and Fugang Duan's tag due to substantial changes
- Add two Tested-by tags from Enric Balletbo i Serra and Kajetan Puchalski

Changes for v6:
- Add mailbox, scmi and uart support

Changes for v5:
- Delete pmu-spe node which need to refine, and add it in future

Changes for v4:
- Add ppi-partition entry for gic-v3 node, and let pmu-a520 and pmu-a720's interrupt entry
get its handle
- Remove gic-v3's #redistributor-regions and redistributor-stride properties
- Change gic-v3's #interrupt-cells as 4, and change all interrupt specifiers accordingly
- Remove "arm,no-tick-in-suspend" for timer due to global counter is at always-on power domain
- Remove timer's clock frequency due to firmware has already set it
- Add Krzysztof Kozlowski's reviewed-by

Changes for v3:
- Fix two dts coding sytle issues

Changes for v2:
- Corrects the SoF tag's name
- Fix several coding sytle issues
- move linux,cma node to dts file
- delete memory node, memory size is passed by firmware
- delete uart2 node which will be added in future patches
- Improve for pmu and cpu node to stands for more specific cpu model
- Improve the timer node and add hypervisor virtual timer irq
- Pass "make O=$OUTKNL CHECK_DTBS=y W=1 cix/sky1-orion-o6.dtb"

arch/arm64/boot/dts/Makefile | 1 +
arch/arm64/boot/dts/cix/Makefile | 2 +
arch/arm64/boot/dts/cix/sky1-orion-o6.dts | 39 +++
arch/arm64/boot/dts/cix/sky1.dtsi | 331 ++++++++++++++++++++++
4 files changed, 373 insertions(+)
create mode 100644 arch/arm64/boot/dts/cix/Makefile
create mode 100644 arch/arm64/boot/dts/cix/sky1-orion-o6.dts
create mode 100644 arch/arm64/boot/dts/cix/sky1.dtsi

diff --git a/arch/arm64/boot/dts/Makefile b/arch/arm64/boot/dts/Makefile
index 79b73a21ddc2..8e7ccd0027bd 100644
--- a/arch/arm64/boot/dts/Makefile
+++ b/arch/arm64/boot/dts/Makefile
@@ -13,6 +13,7 @@ subdir-y += bitmain
subdir-y += blaize
subdir-y += broadcom
subdir-y += cavium
+subdir-y += cix
subdir-y += exynos
subdir-y += freescale
subdir-y += hisilicon
diff --git a/arch/arm64/boot/dts/cix/Makefile b/arch/arm64/boot/dts/cix/Makefile
new file mode 100644
index 000000000000..ed3713982012
--- /dev/null
+++ b/arch/arm64/boot/dts/cix/Makefile
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0
+dtb-$(CONFIG_ARCH_CIX) += sky1-orion-o6.dtb
diff --git a/arch/arm64/boot/dts/cix/sky1-orion-o6.dts b/arch/arm64/boot/dts/cix/sky1-orion-o6.dts
new file mode 100644
index 000000000000..d74964d53c3b
--- /dev/null
+++ b/arch/arm64/boot/dts/cix/sky1-orion-o6.dts
@@ -0,0 +1,39 @@
+// SPDX-License-Identifier: BSD-3-Clause
+/*
+ * Copyright 2025 Cix Technology Group Co., Ltd.
+ *
+ */
+
+/dts-v1/;
+
+#include "sky1.dtsi"
+/ {
+ model = "Radxa Orion O6";
+ compatible = "radxa,orion-o6", "cix,sky1";
+
+ aliases {
+ serial2 = &uart2;
+ };
+
+ chosen {
+ stdout-path = &uart2;
+ };
+
+ reserved-memory {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+
+ linux,cma {
+ compatible = "shared-dma-pool";
+ reusable;
+ size = <0x0 0x28000000>;
+ linux,cma-default;
+ };
+ };
+
+};
+
+&uart2 {
+ status = "okay";
+};
diff --git a/arch/arm64/boot/dts/cix/sky1.dtsi b/arch/arm64/boot/dts/cix/sky1.dtsi
new file mode 100644
index 000000000000..9c723917d8ca
--- /dev/null
+++ b/arch/arm64/boot/dts/cix/sky1.dtsi
@@ -0,0 +1,331 @@
+// SPDX-License-Identifier: BSD-3-Clause
+/*
+ * Copyright 2025 Cix Technology Group Co., Ltd.
+ *
+ */
+
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/clock/cix,sky1.h>
+
+/ {
+ interrupt-parent = <&gic>;
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ cpus {
+ #address-cells = <2>;
+ #size-cells = <0>;
+
+ cpu0: cpu@0 {
+ compatible = "arm,cortex-a520";
+ enable-method = "psci";
+ reg = <0x0 0x0>;
+ device_type = "cpu";
+ capacity-dmips-mhz = <403>;
+ };
+
+ cpu1: cpu@100 {
+ compatible = "arm,cortex-a520";
+ enable-method = "psci";
+ reg = <0x0 0x100>;
+ device_type = "cpu";
+ capacity-dmips-mhz = <403>;
+ };
+
+ cpu2: cpu@200 {
+ compatible = "arm,cortex-a520";
+ enable-method = "psci";
+ reg = <0x0 0x200>;
+ device_type = "cpu";
+ capacity-dmips-mhz = <403>;
+ };
+
+ cpu3: cpu@300 {
+ compatible = "arm,cortex-a520";
+ enable-method = "psci";
+ reg = <0x0 0x300>;
+ device_type = "cpu";
+ capacity-dmips-mhz = <403>;
+ };
+
+ cpu4: cpu@400 {
+ compatible = "arm,cortex-a720";
+ enable-method = "psci";
+ reg = <0x0 0x400>;
+ device_type = "cpu";
+ capacity-dmips-mhz = <1024>;
+ };
+
+ cpu5: cpu@500 {
+ compatible = "arm,cortex-a720";
+ enable-method = "psci";
+ reg = <0x0 0x500>;
+ device_type = "cpu";
+ capacity-dmips-mhz = <1024>;
+ };
+
+ cpu6: cpu@600 {
+ compatible = "arm,cortex-a720";
+ enable-method = "psci";
+ reg = <0x0 0x600>;
+ device_type = "cpu";
+ capacity-dmips-mhz = <1024>;
+ };
+
+ cpu7: cpu@700 {
+ compatible = "arm,cortex-a720";
+ enable-method = "psci";
+ reg = <0x0 0x700>;
+ device_type = "cpu";
+ capacity-dmips-mhz = <1024>;
+ };
+
+ cpu8: cpu@800 {
+ compatible = "arm,cortex-a720";
+ enable-method = "psci";
+ reg = <0x0 0x800>;
+ device_type = "cpu";
+ capacity-dmips-mhz = <1024>;
+ };
+
+ cpu9: cpu@900 {
+ compatible = "arm,cortex-a720";
+ enable-method = "psci";
+ reg = <0x0 0x900>;
+ device_type = "cpu";
+ capacity-dmips-mhz = <1024>;
+ };
+
+ cpu10: cpu@a00 {
+ compatible = "arm,cortex-a720";
+ enable-method = "psci";
+ reg = <0x0 0xa00>;
+ device_type = "cpu";
+ capacity-dmips-mhz = <1024>;
+ };
+
+ cpu11: cpu@b00 {
+ compatible = "arm,cortex-a720";
+ enable-method = "psci";
+ reg = <0x0 0xb00>;
+ device_type = "cpu";
+ capacity-dmips-mhz = <1024>;
+ };
+
+ cpu-map {
+ cluster0 {
+ core0 {
+ cpu = <&cpu0>;
+ };
+ core1 {
+ cpu = <&cpu1>;
+ };
+ core2 {
+ cpu = <&cpu2>;
+ };
+ core3 {
+ cpu = <&cpu3>;
+ };
+ core4 {
+ cpu = <&cpu4>;
+ };
+ core5 {
+ cpu = <&cpu5>;
+ };
+ core6 {
+ cpu = <&cpu6>;
+ };
+ core7 {
+ cpu = <&cpu7>;
+ };
+ core8 {
+ cpu = <&cpu8>;
+ };
+ core9 {
+ cpu = <&cpu9>;
+ };
+ core10 {
+ cpu = <&cpu10>;
+ };
+ core11 {
+ cpu = <&cpu11>;
+ };
+ };
+ };
+ };
+
+ firmware {
+ ap_to_pm_scmi: scmi {
+ compatible = "arm,scmi";
+ mbox-names = "tx", "rx";
+ mboxes = <&mbox_ap2pm 8>, <&mbox_pm2ap 8>;
+ shmem = <&ap2pm_scmi_mem &pm2ap_scmi_mem>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ scmi_clk: protocol@14 {
+ reg = <0x14>;
+ #clock-cells = <1>;
+ };
+
+ };
+ };
+
+ pmu-a520 {
+ compatible = "arm,cortex-a520-pmu";
+ interrupts = <GIC_PPI 7 IRQ_TYPE_LEVEL_LOW &ppi_partition0>;
+ };
+
+ pmu-a720 {
+ compatible = "arm,cortex-a720-pmu";
+ interrupts = <GIC_PPI 7 IRQ_TYPE_LEVEL_LOW &ppi_partition1>;
+ };
+
+ psci {
+ compatible = "arm,psci-1.0";
+ method = "smc";
+ };
+
+ soc@0 {
+ compatible = "simple-bus";
+ ranges = <0 0 0 0 0x20 0>;
+ dma-ranges;
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ uart0: serial@40b0000 {
+ compatible = "arm,pl011", "arm,primecell";
+ reg = <0x0 0x040b0000 0x0 0x1000>;
+ interrupts = <GIC_SPI 296 IRQ_TYPE_LEVEL_HIGH 0>;
+ clocks = <&scmi_clk CLK_TREE_FCH_UART0_FUNC>, <&scmi_clk CLK_TREE_FCH_UART0_APB>;
+ clock-names = "uartclk", "apb_pclk";
+ status = "disabled";
+ };
+
+ uart1: serial@40c0000 {
+ compatible = "arm,pl011", "arm,primecell";
+ reg = <0x0 0x040c0000 0x0 0x1000>;
+ interrupts = <GIC_SPI 297 IRQ_TYPE_LEVEL_HIGH 0>;
+ clocks = <&scmi_clk CLK_TREE_FCH_UART1_FUNC>, <&scmi_clk CLK_TREE_FCH_UART1_APB>;
+ clock-names = "uartclk", "apb_pclk";
+ status = "disabled";
+ };
+
+ uart2: serial@40d0000 {
+ compatible = "arm,pl011", "arm,primecell";
+ reg = <0x0 0x040d0000 0x0 0x1000>;
+ interrupts = <GIC_SPI 298 IRQ_TYPE_LEVEL_HIGH 0>;
+ clocks = <&scmi_clk CLK_TREE_FCH_UART2_FUNC>, <&scmi_clk CLK_TREE_FCH_UART2_APB>;
+ clock-names = "uartclk", "apb_pclk";
+ status = "disabled";
+ };
+
+ uart3: serial@40e0000 {
+ compatible = "arm,pl011", "arm,primecell";
+ reg = <0x0 0x040e0000 0x0 0x1000>;
+ interrupts = <GIC_SPI 299 IRQ_TYPE_LEVEL_HIGH 0>;
+ clocks = <&scmi_clk CLK_TREE_FCH_UART3_FUNC>, <&scmi_clk CLK_TREE_FCH_UART3_APB>;
+ clock-names = "uartclk", "apb_pclk";
+ status = "disabled";
+ };
+
+ mbox_ap2se: mailbox@5060000 {
+ compatible = "cix,sky1-mbox";
+ reg = <0x0 0x05060000 0x0 0x10000>;
+ interrupts = <GIC_SPI 378 IRQ_TYPE_LEVEL_HIGH 0>;
+ #mbox-cells = <1>;
+ cix,mbox-dir = "tx";
+ };
+
+ mbox_se2ap: mailbox@5070000 {
+ compatible = "cix,sky1-mbox";
+ reg = <0x0 0x05070000 0x0 0x10000>;
+ interrupts = <GIC_SPI 379 IRQ_TYPE_LEVEL_HIGH 0>;
+ #mbox-cells = <1>;
+ cix,mbox-dir = "rx";
+ };
+
+ ap2pm_scmi_mem: ap2pm-shmem@6590000 {
+ compatible = "arm,scmi-shmem";
+ reg = <0x0 0x06590000 0x0 0x80>;
+ reg-io-width = <4>;
+ };
+
+ mbox_ap2pm: mailbox@6590080 {
+ compatible = "cix,sky1-mbox";
+ reg = <0x0 0x06590080 0x0 0xff80>;
+ interrupts = <GIC_SPI 363 IRQ_TYPE_LEVEL_HIGH 0>;
+ #mbox-cells = <1>;
+ cix,mbox-dir = "tx";
+ };
+
+ pm2ap_scmi_mem: pm2ap-shmem@65a0000 {
+ compatible = "arm,scmi-shmem";
+ reg = <0x0 0x065a0000 0x0 0x80>;
+ reg-io-width = <4>;
+ };
+
+ mbox_pm2ap: mailbox@65a0080 {
+ compatible = "cix,sky1-mbox";
+ reg = <0x0 0x065a0080 0x0 0xff80>;
+ interrupts = <GIC_SPI 359 IRQ_TYPE_LEVEL_HIGH 0>;
+ #mbox-cells = <1>;
+ cix,mbox-dir = "rx";
+ };
+
+ mbox_sfh2ap: mailbox@8090000 {
+ compatible = "cix,sky1-mbox";
+ reg = <0x0 0x08090000 0x0 0x10000>;
+ interrupts = <GIC_SPI 391 IRQ_TYPE_LEVEL_HIGH 0>;
+ #mbox-cells = <1>;
+ cix,mbox-dir = "rx";
+ };
+
+ mbox_ap2sfh: mailbox@80a0000 {
+ compatible = "cix,sky1-mbox";
+ reg = <0x0 0x080a0000 0x0 0x10000>;
+ interrupts = <GIC_SPI 392 IRQ_TYPE_LEVEL_HIGH 0>;
+ #mbox-cells = <1>;
+ cix,mbox-dir = "tx";
+ };
+
+ gic: interrupt-controller@e010000 {
+ compatible = "arm,gic-v3";
+ reg = <0x0 0x0e010000 0 0x10000>, /* GICD */
+ <0x0 0x0e090000 0 0x300000>; /* GICR * 12 */
+ interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_LOW 0>;
+ #interrupt-cells = <4>;
+ interrupt-controller;
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+
+ gic_its: msi-controller@e050000 {
+ compatible = "arm,gic-v3-its";
+ reg = <0x0 0x0e050000 0x0 0x30000>;
+ msi-controller;
+ #msi-cells = <1>;
+ };
+
+ ppi-partitions {
+ ppi_partition0: interrupt-partition-0 {
+ affinity = <&cpu0 &cpu1 &cpu2 &cpu3>;
+ };
+
+ ppi_partition1: interrupt-partition-1 {
+ affinity = <&cpu4 &cpu5 &cpu6 &cpu7 &cpu8 &cpu9 &cpu10 &cpu11>;
+ };
+ };
+ };
+ };
+
+ timer {
+ compatible = "arm,armv8-timer";
+ interrupt-names = "sec-phys", "phys", "virt", "hyp-phys", "hyp-virt";
+ interrupts = <GIC_PPI 13 IRQ_TYPE_LEVEL_LOW 0>,
+ <GIC_PPI 14 IRQ_TYPE_LEVEL_LOW 0>,
+ <GIC_PPI 11 IRQ_TYPE_LEVEL_LOW 0>,
+ <GIC_PPI 10 IRQ_TYPE_LEVEL_LOW 0>,
+ <GIC_PPI 12 IRQ_TYPE_LEVEL_LOW 0>;
+ };
+};
--
2.25.1