CVS commit: src/sys/arch/sandpoint

["Rin Okuyama" <rin%netbsd.org@localhost>]

Module Name:    src
Committed By:   rin
Date:           Thu Mar 25 05:35:50 UTC 2021

Modified Files:
        src/sys/arch/sandpoint/conf: KUROBOX
        src/sys/arch/sandpoint/sandpoint: com_eumb.c

Log Message:
At least KuroBox Classic and HG seem to have buggy UART, for which
ETXRDY interrupts are sometimes (once per a few hours?) lost; TX stalls
until next RX arrives.

Since interrupt-based I/O works just fine for other devices, I believe
this problem is due to UART and not to PIC or its driver.

In order to work around this bug, enable COM_HW_BROKEN_ETXRDY bit, as
well as carry out polling once per 10 sec or 1k tics (arbitrary, but
1 min seems too long).

XXX
Apply this for other MPC824x-based boards?


To generate a diff of this commit:
cvs rdiff -u -r1.8 -r1.9 src/sys/arch/sandpoint/conf/KUROBOX
cvs rdiff -u -r1.11 -r1.12 src/sys/arch/sandpoint/sandpoint/com_eumb.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.