In order to give firmware full access to r_intc, Linux needs to avoid
using it in the device tree. Most IRQ lines attached to r_intc are also
attached to the GIC. Unfortunately, the NMI is not. For it to be used in
Linux, we have to forward it in firmware over the mailbox.
Add a node representing this virtual interrupt controller.
Signed-off-by: Samuel Holland <sam...@sholland.org>
---
arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
index 29ee8f0f833a..63e33215dea0 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
@@ -128,6 +128,14 @@
status = "disabled";
};
+ msgbox_intc: interrupt-controller {
+ compatible = "allwinner,sunxi-msgbox-intc";
+ interrupt-controller;
+ #interrupt-cells = <1>;
+ mboxes = <&msgbox 6>, <&msgbox 7>;
+ mbox-names = "tx", "rx";
+ };
+
osc24M: osc24M_clk {
#clock-cells = <0>;
compatible = "fixed-clock";
--
2.19.2
