linux-kernel - [PATCH 6/9] ARM: dts: sun8i-v3s: Add the V3s NMI IRQ controller

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Message-Id: <20201031182137.1879521-7-contact@paulk.fr>
Date:   Sat, 31 Oct 2020 19:21:34 +0100
From:   Paul Kocialkowski <contact@...lk.fr>
To:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Cc:     Rob Herring <robh+dt@...nel.org>,
        Maxime Ripard <mripard@...nel.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Matteo Scordino <matteo.scordino@...il.com>,
        Icenowy Zheng <icenowy@...c.io>,
        Paul Kocialkowski <contact@...lk.fr>
Subject: [PATCH 6/9] ARM: dts: sun8i-v3s: Add the V3s NMI IRQ controller

The V3s/V3 has a NMI interrupt controller, mainly used for the AXP209.
Its address follows the sytsem controller block, which was previously
incorrectly described as spanning over 0x1000 address bytes.

This reduces the system controller address span up to the NMI
controller and adds a node for the controller, with its dedicated
compatible.

While the interrupt number was found in Allwinner's documentation,
the address for the controller is specified in any Allwinner SDK
supporting sun8iw8 (V3/V3s) at:
drivers/power/axp_power/axp20/axp20-board.c

It was tested to work on a V3 board with an AXP209 connected to the
NMI interrupt line.

Signed-off-by: Paul Kocialkowski <contact@...lk.fr>
---
 arch/arm/boot/dts/sun8i-v3s.dtsi | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/sun8i-v3s.dtsi b/arch/arm/boot/dts/sun8i-v3s.dtsi
index 7b2d684aeb97..d2e2abd3869a 100644
--- a/arch/arm/boot/dts/sun8i-v3s.dtsi
+++ b/arch/arm/boot/dts/sun8i-v3s.dtsi
@@ -157,12 +157,20 @@ mixer0_out_tcon0: endpoint {
 		syscon: system-control@...0000 {
 			compatible = "allwinner,sun8i-v3s-system-control",
 				     "allwinner,sun8i-h3-system-control";
-			reg = <0x01c00000 0x1000>;
+			reg = <0x01c00000 0xd0>;
 			#address-cells = <1>;
 			#size-cells = <1>;
 			ranges;
 		};
 
+		nmi_intc: interrupt-controller@...00d0 {
+			compatible = "allwinner,sun8i-v3s-sc-nmi";
+			interrupt-controller;
+			#interrupt-cells = <2>;
+			reg = <0x01c000d0 0x0c>;
+			interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
+		};
+
 		tcon0: lcd-controller@...c000 {
 			compatible = "allwinner,sun8i-v3s-tcon";
 			reg = <0x01c0c000 0x1000>;
-- 
2.28.0