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@xxxxxxxxxxx>
---
arch/riscv/boot/dts/thead/th1520.dtsi | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/arch/riscv/boot/dts/thead/th1520.dtsi b/arch/riscv/boot/dts/thead/th1520.dtsi
index d4cba0713cab..d6af27cbb786 100644
--- a/arch/riscv/boot/dts/thead/th1520.dtsi
+++ b/arch/riscv/boot/dts/thead/th1520.dtsi
@@ -6,6 +6,7 @@
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/clock/thead,th1520-clk-ap.h>
+#include <dt-bindings/firmware/thead,th1520-aon.h>
/ {
compatible = "thead,th1520";
@@ -229,6 +230,13 @@ stmmac_axi_config: stmmac-axi-config {
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>;
--
2.34.1
