Re: [PATCH v2] dt-bindings: interrupt-controller: loongson,liointc: Fix warnings about liointc-2.0

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Each IRQ source of liointc may be routed to different IRQ source of cpuintc, for implementing this, bit mapping between liointc and cpuintc is required, and the mapping information is used for liointc IRQ routing register setting. It seems that interrupt-map can not pass the mapping to driver in current driver/of code,  so the mapping is used in a non-standard way(of cause, underscore style may be changed in dts and driver).

IMO, hardcode routing completely in driver is not flexible and not recommended, and if possible, keep current map unchanged please.



On 2023/8/31 上午9:47, Binbin Zhou wrote:
cc Jianmin Lv.

Hi all:

Jianmin knows Loongson interrupt controllers well, he may have other


On Wed, Aug 30, 2023 at 11:31 PM Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx> wrote:

在 2023/8/30 22:35, Krzysztof Kozlowski 写道:
What's the best way, in your opinion, to overhaul this property? As we don't
really care backward compatibility of DTBs on those systems we can just
redesign it.
Deprecate the property in the bindings, allow driver to work with or
without it and finally drop it entirely from DTS.
I'd love to have such configuration flexibility so I'd be sad to see it go.
+ Huacai and Binbin, what's your opinion?

If dropping such functionality in kernel is a must go, we can hardcode
to route all downstream interrupt to the first pin that passed to DT.

- Jiaxun
Best regards,

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