[PATCH v2 7/7] arm64: dts: allwinner: add a523 msgbox and remoteproc nodes
From: Tim Michals
Date: Sat Sep 26 2026 - 20:23:24 EST
Add the hardware mailbox (CPUX_MSGBOX) node and the XuanTie E907 RISC-V
remoteproc node for Allwinner A523/A527/T527 SoCs.
Connect the remoteproc node to the MCU CCU clocks (bus, core, sram,
msgbox) and resets (cfg, core, sram, msgbox) and mailbox channels 8 & 9
for bidirectional host-coprocessor IPC.
Signed-off-by: Tim Michals <tcmichals@xxxxxxxxx>
---
.../arm64/boot/dts/allwinner/sun55i-a523.dtsi | 39 +++++++++++++++++++
1 file changed, 39 insertions(+)
diff --git a/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi b/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi
index 85ef492ffeae..b4699c4df5e9 100644
--- a/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi
@@ -605,6 +605,23 @@ dma: dma-controller@3002000 {
#dma-cells = <1>;
};
+ msgbox: mailbox@3003000 {
+ compatible = "allwinner,sun55i-a523-msgbox";
+ reg = <0x03003000 0x1000>,
+ <0x07094000 0x1000>,
+ <0x07120000 0x1000>,
+ <0x07136000 0x1000>;
+ reg-names = "arm", "dsp", "cpus", "rv";
+ clocks = <&ccu CLK_BUS_MSGBOX>;
+ resets = <&ccu RST_BUS_MSGBOX>;
+ interrupts = <GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 181 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 174 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "arm", "dsp", "cpus", "rv";
+ #mbox-cells = <1>;
+ };
+
sid: efuse@3006000 {
compatible = "allwinner,sun55i-a523-sid",
"allwinner,sun50i-a64-sid";
@@ -1144,5 +1161,27 @@ npu: npu@7122000 {
resets = <&mcu_ccu RST_BUS_MCU_NPU>;
power-domains = <&ppu PD_NPU>;
};
+
+ rproc: remoteproc@7130000 {
+ compatible = "allwinner,sun55i-a523-rproc";
+ reg = <0x07130000 0x1000>,
+ <0x07280000 0x40000>,
+ <0x072c0000 0x40000>,
+ <0x07010364 0x4>;
+ reg-names = "cfg", "r_sram", "r_sram1", "remap";
+ clocks = <&mcu_ccu CLK_BUS_MCU_RISCV_CFG>,
+ <&mcu_ccu CLK_MCU_RISCV>,
+ <&mcu_ccu CLK_BUS_MCU_PUBSRAM>,
+ <&mcu_ccu CLK_BUS_MCU_RISCV_MSGBOX>;
+ clock-names = "bus", "core", "sram", "msgbox";
+ resets = <&mcu_ccu RST_BUS_MCU_RISCV_CFG>,
+ <&mcu_ccu RST_BUS_MCU_RISCV_CORE>,
+ <&mcu_ccu RST_BUS_MCU_PUBSRAM>,
+ <&mcu_ccu RST_BUS_MCU_RISCV_MSGBOX>;
+ reset-names = "cfg", "core", "sram", "msgbox";
+ mboxes = <&msgbox 8>, <&msgbox 9>;
+ mbox-names = "rx", "tx";
+ status = "disabled";
+ };
};
};
--
2.43.0