Enable FIFO on pl011 uart
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Authored by jchandra on Dec 16 2016, 4:37 PM.

Details

Reviewers

gonzo
andrew

Group Reviewers

ARM

Commits

rS314318: Enable pl011 UART FIFOs

Summary

Enable Tx and Rx FIFOs of the pl011 uart in attach method. Update uart functions to handle this change.

Test Plan

Tested only on QEMU which does really emulate the hardware, especially on transmit. So any tests results from anyone with access to real hardware would be appreciated.

There should be significant reduction in the number of uart interrupts when dumping a lot of text to screen...

Diff Detail

Repository

rS FreeBSD src repository - subversion

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Event Timeline

jchandra updated this revision to Diff 23001.Dec 16 2016, 4:37 PM

jchandra retitled this revision from to Enable FIFO on pl011 uart.

jchandra updated this object.

jchandra edited the test plan for this revision. (Show Details)

jchandra set the repository for this revision to rS FreeBSD src repository - subversion.

Herald added a subscriber: imp. · View Herald TranscriptDec 16 2016, 4:37 PM

jchandra added reviewers: andrew, gonzo, ARM.Dec 16 2016, 4:38 PM

andrew accepted this revision.Feb 21 2017, 5:05 PM

andrew edited edge metadata.

This revision is now accepted and ready to land.Feb 21 2017, 5:05 PM

Closed by commit rS314318: Enable pl011 UART FIFOs (authored by jchandra). · Explain WhyFeb 26 2017, 10:05 PM

This revision was automatically updated to reflect the committed changes.

Revision Contents
Changeset List

Path

Size

head/

sys/

dev/

uart/

uart_dev_pl011.c

24 lines

Diff 25729

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head/sys/dev/uart/uart_dev_pl011.c

Enable FIFO on pl011 uartClosedPublicActions