Re: [RFC part2 PATCH 8/9] ACPI / ARM64: Update acpi_register_gsi to register with the core IRQ subsystem

Arnd Bergmann
2013-12-05T03:48:58Z

On Tuesday 03 December 2013, Hanjun Guo wrote:
> + /*
> + * ACPI have no bindings to indicate SPI or PPI, so we
> + * use different mappings from DT in ACPI.
> + *
> + * For FDT
> + * PPI interrupt: in the range [0, 15];
> + * SPI interrupt: in the range [0, 987];
> + *
> + * For ACPI, using identity mapping for hwirq:
> + * PPI interrupt: in the range [16, 31];
> + * SPI interrupt: in the range [32, 1019];

This difference might cause endless confusion. Can't you register PPI and SPI as
separate IRQ controllers to have the same number space that we normally have?

Arnd