From: Colin.Tuckley@arm.com (Colin Tuckley)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/3] ARM: driver for the character LCD found in ARM refdesigns
Date: Wed, 7 Jul 2010 09:47:54 +0100 [thread overview]
Message-ID: <F01D8B85CFF58440B2A13965FBA90CA42DA39B5220@GEORGE.Emea.Arm.com> (raw)
In-Reply-To: <1278429668-4564-1-git-send-email-triad@df.lth.se>
> -----Original Message-----
> kernel-bounces at lists.infradead.org] On Behalf Of Linus Walleij
> This adds a driver for the character LCD found on the ARM Versatile
> and RealView Platform Baseboards. It doesn't do very much more than
> display the text "ARM Linux" on the first line and the linux banner
> on the second line, but that's still useful.
> The 4bit mode is the only one that seems to work. I tried putting
> the display into 8bit mode and failed miserably.
I've had a check with the hardware guys. Our self-test software uses the 4-bit mode, the 8-bit mode is untested.
> The IRQ is stated in the reference manual as "don't use" because it
> is "reserved for future use" but I implemented it anyway.
The answer seems to be that "future use" means "for an OS".
Colin
--
Colin Tuckley - ARM Ltd.
110 Fulbourn Rd
Cambridge, CB1 9NJ
Tel: +44 1223 400536
-- IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you.
next prev parent reply other threads:[~2010-07-07 8:47 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-06 15:21 [PATCH 1/3] ARM: driver for the character LCD found in ARM refdesigns Linus Walleij
2010-07-07 8:47 ` Colin Tuckley [this message]
2010-07-07 12:32 ` Linus Walleij
2010-07-15 10:22 ` Russell King - ARM Linux
2010-07-15 11:49 ` Linus Walleij
2010-07-15 11:53 ` Russell King - ARM Linux
2010-07-15 16:32 ` H Hartley Sweeten
2010-07-16 9:19 ` Arnd Bergmann
2010-07-16 9:25 ` Russell King - ARM Linux
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=F01D8B85CFF58440B2A13965FBA90CA42DA39B5220@GEORGE.Emea.Arm.com \
--to=colin.tuckley@arm.com \
--cc=linux-arm-kernel@lists.infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.