Re: [PATCH 5/8] altera_uart: Make it possible to use Altera UART and 8250 ports together

Anton Vorontsov
2010-10-01T13:53:01Z

On Fri, Oct 01, 2010 at 01:41:38PM +0100, Alan Cox wrote:
> On Fri, 1 Oct 2010 17:22:07 +0400
> Anton Vorontsov <cbouatmailru@gmail.com> wrote:
>
> > This fixes tty name and major number conflicts. The major number
> > 204 is used across many platform-specific serial drivers, so we
> > use that.
>
> 204 is allocated in small chunks to specific low volume devices so you
> need a proper minor allocation
>
> At this point that would be 204,213 for whatever tiny range you need.
>
> Please send me a patch for devices.txt and update accordingly,
> otherwise no objections.

Sure thing. Will this work?

Thanks!

- - -
From: Anton Vorontsov <cbouatmailru@gmail.com>
Subject: lanana: Assign a device name and numbering for Altera UART

Note that Altera UART is usually found on an FPGA solutions, so there
could be quite a lot of ports (expanded as needed).

I guess the sane maximum number of ports would be 8, but it is still
possible to do hundreds of them.

Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
---
Documentation/devices.txt | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/Documentation/devices.txt b/Documentation/devices.txt
index d0d1df6..984cf24 100644
--- a/Documentation/devices.txt
+++ b/Documentation/devices.txt
@@ -2805,6 +2805,9 @@ Your cooperation is appreciated.
210 = /dev/ttyMAX1 MAX3100 serial port 1
211 = /dev/ttyMAX2 MAX3100 serial port 2
212 = /dev/ttyMAX3 MAX3100 serial port 3
+ 213 = /dev/ttyAL0 Altera UART port 0
+ ...
+ 221 = /dev/ttyAL7 Altera UART port 7

205 char Low-density serial ports (alternate device)
0 = /dev/culu0 Callout device for ttyLU0
--
1.7.0.5