check_timing的warning，请帮忙分析。

arm_user · 发表于 2012-4-22 21:26:27

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sta时，check_timing出很多warning，命令返回0，如何逐个debug？我贴出log信息：

pt_shell> check_timing
Information: Checking 'no_driving_cell'.
Information: Checking 'unconstrained_endpoints'.
Warning: There are 25 endpoints which are not constrained for maximum delay.

Information: Checking 'unexpandable_clocks'.
Warning: There is 1 clock set for which periods were not expandable.

Information: Checking 'latch_fanout'.
Information: Checking 'no_clock'.
Warning: There are 7 register clock pins with no clock.

Information: Checking 'partial_input_delay'.
Warning: There are 34 ports with partially defined input delays.

Information: Checking 'generic'.
Information: Checking 'loops'.
Warning: There are 57 timing loops in the design.

Information: Checking 'generated_clocks'.
Information: Checking 'pulse_clock_non_pulse_clock_merge'.
Information: Checking 'pll_configuration'.
0
pt_shell>

陈涛 · 发表于 2012-4-23 00:19:40

这一条条说得够清楚了，加-verbose选项看详细的list，照着改就是了

icfbicfb · 发表于 2012-4-25 17:23:50

据经验来，基本上就是看看，很少有实质上的作用

vinous1983 · 发表于 2012-4-26 01:34:59

那个warning 也会导致返回值是0吗

[求助] check_timing的warning，请帮忙分析。

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