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Make the CUT_OUP_POP_INP_GNT ID queue parameter user visible and bump common cells #38

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merged 3 commits into from
Aug 26, 2024

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@ricted98 ricted98 commented Aug 22, 2024

The use of FULL_BANDWIDTH=1 ID queues paired with CUT_OUP_POP_INP_GNT=0 (default value) might lead to combinational loops with downstream IPs. Cutting the combinational path between input and output solves the problem.

This PR extends #34 to make the CUT_OUP_POP_INP_GNT parameter user visible and bumps the common_cells dependency.

Would it be better to allow more granularity, i.e. allowing for individual ID queues tuning?

@ricted98 ricted98 self-assigned this Aug 22, 2024
@ricted98 ricted98 marked this pull request as ready for review August 22, 2024 10:15
@ricted98 ricted98 marked this pull request as draft August 22, 2024 10:52
@ricted98 ricted98 force-pushed the rt/id-queue-cut-oup-pop-inp-gnt branch from 47706fa to 6aeedaa Compare August 22, 2024 10:55
@ricted98 ricted98 marked this pull request as ready for review August 22, 2024 14:23
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LGTM. Thanks. Would it make sense to set the default to 1 directly since the FULL_BANDWIDTH is also set to 1 by default?

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I defaulted it to 0 for backward compatibility since the ID queues without this parameter implicitly behave as if it was set to 0. However, I do not have a strong opinion about it.

@SamuelRiedel SamuelRiedel merged commit 062bc36 into master Aug 26, 2024
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@SamuelRiedel SamuelRiedel deleted the rt/id-queue-cut-oup-pop-inp-gnt branch August 26, 2024 14:15
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3 participants