Page MenuHomeFreeBSD
Differential D47077

uart/pl011: Add support for computing rclk
Needs ReviewPublic
Actions

Authored by imp on Fri, Oct 11, 9:54 PM.
Tags
None
Referenced Files
Unknown Object (File)
Sun, Oct 13, 2:17 AM
Unknown Object (File)
Sat, Oct 12, 4:39 PM
Subscribers
None

Details

Reviewers
markj
andrew
adrian
jhb
jrtc27
bz
marius
oh
manu
kevans
cperciva
mhorne
mw
mmel
Summary

When instructed to do so, compute the rclk (baud rate generator clock)
based on the currently programmed divisor and the communicated baud
rate. We only do this once and only for consoles that tell us the
configured rate and flag we can likely safely compute rclk.

Sponsored by: Netflix

Diff Detail

Repository
rG FreeBSD src repository
Lint
Lint Skipped
Unit
Tests Skipped
Build Status
Buildable 59980
Build 56865: arc lint + arc unit

Event Timeline

imp requested review of this revision.Fri, Oct 11, 9:54 PM
imp created this revision.
Harbormaster completed remote builds in B59924: Diff 144681.Fri, Oct 11, 9:54 PM
imp added a parent revision: D47076: uart/ns8250: Add support for computing rclk.Fri, Oct 11, 9:54 PM
imp added a child revision: D47078: uart: uart_getenv: check for NULL class last, not first.
andrew added inline comments.Mon, Oct 14, 11:43 AM
sys/dev/uart/uart_dev_pl011.c
247

Why & ~3?

imp updated this revision to Diff 144834.Mon, Oct 14, 5:14 PM

Update to use proper constants for this computation. Don't know what I was
thinking before.

Harbormaster completed remote builds in B59980: Diff 144834.Mon, Oct 14, 5:14 PM

Revision Contents
Changeset List

PathSize
sys/
dev/
uart/
18 lines

Diff 144834

View Options

sys/dev/uart/uart_dev_pl011.c

Loading...