gowin: Himbaechel. Extend clock router #1208
Merged
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Now the clock router can place a buffer into the specified network, which divides the network into two parts: from the source to the buffer, routing occurs through any available PIPs, and after the buffer to the sink, only through a dedicated global clock network. This is made specifically for the Tangnano20k where the external oscillator is soldered to a regular non-clock pin. But it can be used for other purposes, you just need to remember that the recipient must be a CLK input or output pin. The port/network to set the buffer to is specified in the .CST file: CLOCK_LOC "name" BUFG; Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
gatecat
reviewed
Sep 7, 2023
himbaechel/uarch/gowin/pack.cc
Outdated
| ctx->createCell(buf_name, id_BUFG); | ||
| CellInfo *buf_ci = ctx->cells.at(buf_name).get(); | ||
| buf_ci->addInput(id_I); | ||
| auto s_net = std::make_unique<NetInfo>(ctx->idf("$PACKER_BUF_%s", net.first.c_str(ctx))); |
There was a problem hiding this comment.
can you use ctx->createNet here?
Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Now the clock router can place a buffer into the specified network, which divides the network into two parts: from the source to the buffer, routing occurs through any available PIPs, and after the buffer to the sink, only through a dedicated global clock network.
This is made specifically for the Tangnano20k where the external oscillator is soldered to a regular non-clock pin. But it can be used for other purposes, you just need to remember that the recipient must be a CLK input or output pin.
The port/network to set the buffer to is specified in the .CST file:
CLOCK_LOC "name" BUFG;