linux-kernel - [PATCH v5 3/3] irqchip: aspeed: add compatible strings for ast2700-intc0-ic and ast2700-intc1-ic

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Message-ID: <20251022065507.1152071-4-ryan_chen@aspeedtech.com>
Date: Wed, 22 Oct 2025 14:55:07 +0800
From: Ryan Chen <ryan_chen@...eedtech.com>
To: ryan_chen <ryan_chen@...eedtech.com>, Thomas Gleixner
	<tglx@...utronix.de>, Rob Herring <robh@...nel.org>, Krzysztof Kozlowski
	<krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, Joel Stanley
	<joel@....id.au>, Andrew Jeffery <andrew@...econstruct.com.au>,
	<jk@...econstruct.com.au>, Kevin Chen <kevin_chen@...eedtech.com>,
	<linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-aspeed@...ts.ozlabs.org>
Subject: [PATCH v5 3/3] irqchip: aspeed: add compatible strings for ast2700-intc0-ic and ast2700-intc1-ic

The AST2700 SoC defines two parent interrupt controller blocks
(INTC0 and INTC1), each containing multiple interrupt-controller
child instances ("*-intc-ic"). The existing irqchip driver
(irq-aspeed-intc.c) currently only registers a single compatible
string: "aspeed,ast2700-intc-ic"

To support device trees that describe the INTC0 and INTC1
hierarchy more precisely, this patch adds two additional
compatible strings:
 - "aspeed,ast2700-intc0-ic"
 - "aspeed,ast2700-intc1-ic"

Both map to the same initialization function
`aspeed_intc_ic_of_init()`.

This allows DTS bindings and drivers for AST2700 INTC0/INTC1
to be matched correctly, while maintaining backward compatibility
with the original compatible string.

Signed-off-by: Ryan Chen <ryan_chen@...eedtech.com>
---
 drivers/irqchip/irq-aspeed-intc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/irqchip/irq-aspeed-intc.c b/drivers/irqchip/irq-aspeed-intc.c
index 8330221799a0..a40b406dc8fa 100644
--- a/drivers/irqchip/irq-aspeed-intc.c
+++ b/drivers/irqchip/irq-aspeed-intc.c
@@ -137,3 +137,5 @@ static int __init aspeed_intc_ic_of_init(struct device_node *node,
 }
 
 IRQCHIP_DECLARE(ast2700_intc_ic, "aspeed,ast2700-intc-ic", aspeed_intc_ic_of_init);
+IRQCHIP_DECLARE(ast2700_intc0_ic, "aspeed,ast2700-intc0-ic", aspeed_intc_ic_of_init);
+IRQCHIP_DECLARE(ast2700_intc1_ic, "aspeed,ast2700-intc1-ic", aspeed_intc_ic_of_init);
-- 
2.34.1