On 21/09/2022 12:14, Robin Murphy wrote:
>> +#define SOC_PERIPHERAL_IRQ_NUMBER(na) (na + 32)
>> +#define SOC_PERIPHERAL_IRQ(nr, na) GIC_SPI nr SOC_PERIPHERAL_IRQ_NUMBER(na)
>> / {
>> compatible = "renesas,r9a07g043";
>> #address-cells = <2>;
>> @@ -128,7 +130,7 @@ ssi1: ssi@1004a000 {
>> compatible = "renesas,r9a07g043-ssi",
>> "renesas,rz-ssi";
>> reg = <0 0x1004a000 0 0x400>;
>> - interrupts = <GIC_SPI 330 IRQ_TYPE_LEVEL_HIGH>,
>> + interrupts = <SOC_PERIPHERAL_IRQ(330, IRQ_TYPE_LEVEL_HIGH)>,
>>
>>
>>
>> Or any other method like that....
>
> Which will generate the text:
>
> "interrupts = <GIC_SPI 330 (IRQ_TYPE_LEVEL_HIGH + 32)>,"
>
> (give or take some whitespace)
>
> CPP supports constant expressions in #if and #elif directives, but
> macros are purely literal text replacement. It might technically be
> achievable with some insane CPP metaprogramming, but for all practical
> purposes this is a non-starter unless dtc itself grows the ability to
> process arithmetic expressions.
Except I put it into flags, not to IRQ number, it works, so I am not
sure why do you call it non-starter?
Best regards,
Krzysztof
