[linux-cirrus] Re: 2.6.20-rcX kernel status

Manfred Gruber <m.gruber@xxxxxxxxx> [2006-12-22 09:00:27]:

> * uart
> 
> -changing console dose not work on kernel boot

I'll try ttyAM1 as boot console on my ts7250 soon - too much parties
lately :8)

> - RS422/485 how to implement

That's probably question for linux-arm-kernel mailing list. There was some
recent thread about that, with response from RMK[1] that this should be done
in userspace so I give up submiting my ported RS485 driver[2] into mainline.
It's forward ported from Technologic System's 2.4.

> * 8x8 keymatrix

Don't know, but I think it's also meant to be driven from userspace.

> please tell me what you think about that... maybe someone is also working on 
> new things, maybe someone has already newest drivers...

You've forget Matthieu Crapet's CPLD watchdog driver[3] for ts72xx boards also.
I'm using it and it's working fine. I think, that this driver would be nice to
get mainline also.

There is also ported patch[4] for arch_reset() to use CPLD watchdog for board
reset on ts72xx boards instead of buggy EP93xx one. Maybe I should try to push 
this one mainline also?

I've also recently tested kexec support(linux booting linux) on my ts7250 using 
Richard Purdie's patch[5] on 2.6.20-rc1. One need userspace support also, I've
tested kexec in buildroot(added recently)[6], although there is kexec package in
OE[7] also.

-- ynezz

1. 
http://lists.arm.linux.org.uk/pipermail/linux-arm-kernel/2006-December/037678.html
2. http://ynezz.ibawizard.net/ts7250/ts72xx_rs485.diff.gz
3. http://ynezz.ibawizard.net/ts7250/watchdog-ts72xx-0.2.patch.gz
4. http://ynezz.ibawizard.net/ts7250/ts72xx_cpld_wdt_reset.diff.gz
5. http://www.rpsys.net/openzaurus/patches/kexec-arm-r3.patch
6. 
http://buildroot.uclibc.org/cgi-bin/viewcvs.cgi/trunk/buildroot/package/kexec/
7. 
http://lists.arm.linux.org.uk/pipermail/linux-arm-kernel/2006-December/037680.html

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