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Add attributes/contraints to a module #396

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ydnatag opened this issue Jun 3, 2020 · 2 comments
Closed

Add attributes/contraints to a module #396

ydnatag opened this issue Jun 3, 2020 · 2 comments
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@ydnatag
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ydnatag commented Jun 3, 2020

Hi,

In order to add PS8 instance (for ZynqMP devices) to nMigen project, i need to add the following constraint:

set_property DONT_TOUCH true [get_cells  "ps/PS8_i"]

The only way i found was:

core = Test()
plat = MyPlatform()
constraints = '''
set_property DONT_TOUCH true [get_cells  "ps/PS8_i"]
'''
plat.build(core, add_constraints=constraints)

Is there any other way to do this? How can i add a constraint/attribute to a module in the elaborate method?
@whitequark
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Do you actually want to add the attribute to an instance? In that case try Instance("PS8", a_DONT_TOUCH="true", ...).

@ydnatag
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ydnatag commented Jun 3, 2020

Works like a charm. Thanks you!

@ydnatag ydnatag closed this as completed Jun 3, 2020
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@whitequark @ydnatag