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mirror of https://github.com/antonblanchard/microwatt.git synced 2026-01-23 02:38:06 +00:00
Benjamin Herrenschmidt bb54af59de xics: Add support for reduced priority field size
This makes the ICS support less than the 8 architected bits
and sets the soc to use 3 bits by default.

All the supported bits set translates to "masked" (and will read
back at 0xff), any small value is used as-is.

Linux doesn't use priorities above 5, so this is a way to save
silicon. The number of supported priority bits is exposed to the
OS via the config register.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2020-06-23 08:23:19 +10:00
..
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