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riscv: dts: thead: Introduce power domain nodes with aon firmware

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The DRM Imagination GPU requires a power-domain driver. In the T-HEAD
TH1520 SoC implements power management capabilities through the E902
core, which can be communicated with through the mailbox, using firmware
protocol.

Add AON node, which servers as a power-domain controller.

Signed-off-by: Michal Wilczynski <m.wilczynski@samsung.com>
Reviewed-by: Drew Fustini <drew@pdp7.com>
Signed-off-by: Drew Fustini <drew@pdp7.com>
This commit is contained in:
Michal Wilczynski 2025-02-19 15:02:37 +01:00 • committed by Drew Fustini
parent 0af2f6be1b
commit 2bae46e3de
1 changed files with 8 additions and 0 deletions
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8
arch/riscv/boot/dts/thead/th1520.dtsi
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@ -6,6 +6,7 @@
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/clock/thead,th1520-clk-ap.h>
#include <dt-bindings/power/thead,th1520-power.h>
/ {
compatible = "thead,th1520";
@ -229,6 +230,13 @@
snps,blen = <0 0 64 32 0 0 0>;
};
aon: aon {
compatible = "thead,th1520-aon";
mboxes = <&mbox_910t 1>;
mbox-names = "aon";
#power-domain-cells = <1>;
};
soc {
compatible = "simple-bus";
interrupt-parent = <&plic>;