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authorVineet Gupta <vgupta@synopsys.com>2016-09-30 16:13:28 -0700
committerVineet Gupta <vgupta@synopsys.com>2016-12-14 09:23:46 -0800
commit107177b14d8179f864315fc4daed9da777ed30c2 (patch)
treebf549522914db856961b39e9e12e3fc8654db3d9 /Documentation/features
parent78833e79d516901413d6e9278cbebf6116d62c78 (diff)
ARCv2: intc: default all interrupts to priority 1
ARC HS Cores support configurable multiple interrupt priorities of upto 16 levels. In commit dec2b2849cfcc ("ARCv2: intc: Allow interruption by lowest priority interrupt") we switched to 15 which seems a bit excessive given that there would be rare hardware implementing so many preemption levels AND running Linux. It would seem that 2 levels will be more common so switch to 1 as the default priority level. This will be the "lower" priority level saving 0 for implementing NMI style support. This scheme also works in systems with more than 2 prioity levels as well. Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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