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Message-ID: <20200918112202.3418-5-thunder.leizhen@huawei.com>
Date: Fri, 18 Sep 2020 19:22:00 +0800
From: Zhen Lei <thunder.leizhen@...wei.com>
To: Thomas Gleixner <tglx@...utronix.de>,
Jason Cooper <jason@...edaemon.net>,
Marc Zyngier <maz@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
"Alexey Brodkin" <abrodkin@...opsys.com>,
Vineet Gupta <vgupta@...opsys.com>,
devicetree <devicetree@...r.kernel.org>,
linux-snps-arc <linux-snps-arc@...ts.infradead.org>,
linux-kernel <linux-kernel@...r.kernel.org>
CC: Zhen Lei <thunder.leizhen@...wei.com>,
Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
Haoyu Lv <lvhaoyu@...wei.com>, Libin <huawei.libin@...wei.com>,
Kefeng Wang <wangkefeng.wang@...wei.com>
Subject: [PATCH v5 4/6] dt-bindings: dw-apb-ictl: support hierarchy irq domain
Add support to use dw-apb-ictl as primary interrupt controller.
Signed-off-by: Zhen Lei <thunder.leizhen@...wei.com>
---
.../bindings/interrupt-controller/snps,dw-apb-ictl.txt | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/interrupt-controller/snps,dw-apb-ictl.txt b/Documentation/devicetree/bindings/interrupt-controller/snps,dw-apb-ictl.txt
index 086ff08322db94f..2db59df9408f4c6 100644
--- a/Documentation/devicetree/bindings/interrupt-controller/snps,dw-apb-ictl.txt
+++ b/Documentation/devicetree/bindings/interrupt-controller/snps,dw-apb-ictl.txt
@@ -2,7 +2,8 @@ Synopsys DesignWare APB interrupt controller (dw_apb_ictl)
Synopsys DesignWare provides interrupt controller IP for APB known as
dw_apb_ictl. The IP is used as secondary interrupt controller in some SoCs with
-APB bus, e.g. Marvell Armada 1500.
+APB bus, e.g. Marvell Armada 1500. It can also be used as primary interrupt
+controller in some SoCs, e.g. Hisilicon SD5203.
Required properties:
- compatible: shall be "snps,dw-apb-ictl"
@@ -10,6 +11,8 @@ Required properties:
region starting with ENABLE_LOW register
- interrupt-controller: identifies the node as an interrupt controller
- #interrupt-cells: number of cells to encode an interrupt-specifier, shall be 1
+
+Additional required property when it's used as secondary interrupt controller:
- interrupts: interrupt reference to primary interrupt controller
The interrupt sources map to the corresponding bits in the interrupt
@@ -21,6 +24,7 @@ registers, i.e.
- (optional) fast interrupts start at 64.
Example:
+ /* dw_apb_ictl is used as secondary interrupt controller */
aic: interrupt-controller@...0 {
compatible = "snps,dw-apb-ictl";
reg = <0x3000 0xc00>;
@@ -29,3 +33,11 @@ Example:
interrupt-parent = <&gic>;
interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>;
};
+
+ /* dw_apb_ictl is used as primary interrupt controller */
+ vic: interrupt-controller@...30000 {
+ compatible = "snps,dw-apb-ictl";
+ reg = <0x10130000 0x1000>;
+ interrupt-controller;
+ #interrupt-cells = <1>;
+ };
--
1.8.3
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