public inbox for u-boot@lists.denx.de
 help / color / mirror / Atom feed
From: Nishanth Menon <menon.nishanth@gmail.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] DeAsserting UART Interrupt line on OMAP3530 for uboot
Date: Thu, 05 Mar 2009 16:34:25 +0200	[thread overview]
Message-ID: <49AFE2F1.10609@gmail.com> (raw)
In-Reply-To: <VSNLCHNFE001biP2rv8000720db@VSNLCHNFE001.VSNLXCHANGE.COM>

Rahanesh said the following on 03/05/2009 04:21 PM:
> Can anyone help me to de-assert  the uart interrupt line.
>   
Please read the OMAP3530 TRM. it explains how to handle the UART registers.
> I have enabled the UART interrupt only for reception of data.
>
> Processor get the interrupt and data is read to a local buffer. Since the
> Interrupt line is not deasserted , i keep on getting the same interrupt. 
>
> How can i deassert the UART interrupt in OMAP 3530? Is it in the UART side
> or Interrupt Controller Side?
>
> How does Ubot handle this? How is the Interrupt line cleared in Uboot?
>
>   
I would recommend doing the following:
git clone  git://git.denx.de/u-boot.git
vim drivers/serial/ns16550.c
You'd see that it is not using interrupts, it does a poll on interrupt
status register..

Regards,
Nishanth Menon

      reply	other threads:[~2009-03-05 14:34 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-03-05 14:21 [U-Boot] DeAsserting UART Interrupt line on OMAP3530 for uboot Rahanesh
2009-03-05 14:34 ` Nishanth Menon [this message]

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=49AFE2F1.10609@gmail.com \
    --to=menon.nishanth@gmail.com \
    --cc=u-boot@lists.denx.de \
    /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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox