linux-kernel - RE: [PATCH v3 1/2] dt-bindings: interrupt-controller: aspeed: Add parent node compatibles and refine documentation

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Message-ID:
 <OS8PR06MB7541F8D3AEE1A618DB31F07BF25FA@OS8PR06MB7541.apcprd06.prod.outlook.com>
Date: Wed, 23 Jul 2025 08:08:22 +0000
From: Ryan Chen <ryan_chen@...eedtech.com>
To: Krzysztof Kozlowski <krzk@...nel.org>, 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>, Kevin Chen
	<kevin_chen@...eedtech.com>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, "devicetree@...r.kernel.org"
	<devicetree@...r.kernel.org>, "linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>, "linux-aspeed@...ts.ozlabs.org"
	<linux-aspeed@...ts.ozlabs.org>
Subject: RE: [PATCH v3 1/2] dt-bindings: interrupt-controller: aspeed: Add
 parent node compatibles and refine documentation

> Subject: Re: [PATCH v3 1/2] dt-bindings: interrupt-controller: aspeed: Add
> parent node compatibles and refine documentation
> 
> On 22/07/2025 11:51, Ryan Chen wrote:
> > +  INTC0 is used to assert GIC if interrupt in INTC1 asserted.
> > +  INTC1 is used to assert INTC0 if interrupt of modules asserted.
> > +  +-----+   +---------+
> > +  | GIC |---|  INTC0  |
> > +  +-----+   +---------+
> > +            +---------+
> > +            |         |---module0
> > +            | INTC0_0 |---module1
> > +            |         |---...
> > +            +---------+---module31
> > +            |---....  |
> > +            +---------+
> > +            |         |     +---------+
> > +            | INTC0_11| +---| INTC1   |
> > +            |         |     +---------+
> > +            +---------+     +---------+---module0
> > +                            | INTC1_0 |---module1
> > +                            |         |---...
> > +                            +---------+---module31
> > +                            ...
> > +                            +---------+---module0
> > +                            | INTC1_5 |---module1
> > +                            |         |---...
> > +                            +---------+---module31
> 
> You binding also said intc1 is the parent of intc-ic, so where is here intc-ic?
> 
> This diagram and new binding do not match at all.

The corresponded compatible is following.

  +-----+   +---------+
  | GIC |---|  INTC0  | -> (parent : aspeed,ast2700-intc0)
  +-----+   +---------+
            +---------+
            |        |---module0
            | INTC0_0 |---module1
			(child : aspeed,ast2700-intc-ic)
            |        |---...
            +---------+---module31
            |---....  |
            +---------+
            |         |    					 +---------+
            | INTC0_11 | +----------------------------	| INTC1   |  -> -> (parent : aspeed,ast2700-intc1)
			(child : aspeed,ast2700-intc-ic)
            |         |     					+---------+
            +---------+     					+--------  -+---module0
                            				| INTC1_0 | --> (child : aspeed,ast2700-intc-ic)
                            				|        |---...
                            				+---------  +---module31
                            				...
                            				+---------  +---module0
                            				| INTC1_5 | --> ((child : aspeed,ast2700-intc-ic))
                            				|        |---...
                            				+---------  +---module31

> 
> 
> Best regards,
> Krzysztof