linuxppc-dev.lists.ozlabs.org archive mirror
 help / color / mirror / Atom feed
From: "Matvejchikov Ilya" <matvejchikov@gmail.com>
To: linuxppc-embedded@ozlabs.org
Subject: No output from SMC1 console with the 2.6.26 kernel (PQ2FADS based board)
Date: Mon, 28 Jul 2008 23:43:07 +0400	[thread overview]
Message-ID: <8496f91a0807281243y2193dad5hc758444fe0a10258@mail.gmail.com> (raw)

Hi all,

I'm working with PQ2FADS based board. When I started to use new 2.6.26
kernel my SMC1 console stopped working. I know that the cpm_uart
driver has been changed and the DTS file needs updating. Unfortunately
I failed to get it running. Could somebody help me solve this problem?

====
The cpm node of the DTS file:
.............................................
		cpm@119c0 {
			#address-cells = <1>;
			#size-cells = <1>;
			#interrupt-cells = <2>;
			compatible = "fsl,mpc8280-cpm", "fsl,cpm2";
			reg = <119c0 30>;
			ranges;

			muram {
				#address-cells = <1>;
				#size-cells = <1>;
				ranges = <0 0 10000>;

				data-only@0 {
					compatible = "fsl,cpm-muram-data";
					reg = <0 2000 9800 800>;
				};
			};

			brg@119f0 {
				compatible = "fsl,cpm-brg", "fsl,cpm2-brg";
				reg = <119f0 10 115f0 10>;
			};

			smc1: serial@11a80 {
				device_type = "serial";
				compatible = "fsl,cpm2-smc-uart";
				reg = <11a80 20 87fc 2>;
				interrupts = <4 8>;
				interrupt-parent = <&PIC>;
				fsl,cpm-brg = <7>;
				fsl,cpm-command = <1d000000>;
			};

		};
.............................................
	chosen {
		linux,stdout-path = &smc1;
		bootargs = "console=ttyCPM0";
	};
.............................................

The early debuging output:
Xid mach(): done
MMU:enter
MMU:hw init
MMU:mapin
MMU:setio
MMU:exit
Using Electronic Devices SPC826 (M82) machine description
Linux version 2.6.26 (ilya@westend) (gcc version 4.1.2) #83 Thu Jul 24
14:45:07 MSD 2008
console [udbg0] enabled
Entering add_active_range(0, 0, 4096) 0 entries of 256 used
setup_arch: bootmem
spc826_setup_arch()
spc826_setup_arch(), finish
arch: exit
Top of RAM: 0x1000000, Total RAM: 0x1000000
Memory hole size: 0MB
Zone PFN ranges:
  DMA             0 ->     4096
  Normal       4096 ->     4096
Movable zone start PFN for each node
early_node_map[1] active PFN ranges
    0:        0 ->     4096
On node 0 totalpages: 4096
  DMA zone: 32 pages used for memmap
  DMA zone: 0 pages reserved
  DMA zone: 4064 pages, LIFO batch:0
  Normal zone: 0 pages used for memmap
  Movable zone: 0 pages used for memmap
Built 1 zonelists in Zone order, mobility grouping off.  Total pages: 4064
Kernel command line: console=ttyCPM0
PID hash table entries: 64 (order: 6, 256 bytes)
time_init: decrementer frequency = 16.500000 MHz
time_init: processor frequency   = 264.000000 MHz
clocksource: timebase mult[f26c9b2] shift[22] registered
clockevent: decrementer mult[439] shift[16] cpu[0]
Console: colour dummy device 80x25
====

Thanks!

             reply	other threads:[~2008-07-28 19:43 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-07-28 19:43 Matvejchikov Ilya [this message]
2008-07-28 19:59 ` No output from SMC1 console with the 2.6.26 kernel (PQ2FADS based board) Scott Wood
2008-07-29  6:10   ` Matvejchikov Ilya
2008-07-29 15:33     ` No output from SMC1 console with the 2.6.26 kernel (8xx " Ben Gardiner
2008-07-29 18:36       ` Matvejchikov Ilya
2008-07-29 19:39         ` Scott Wood
2008-07-30  9:37           ` Matvejchikov Ilya
2008-07-30 15:45             ` Scott Wood
2008-08-19 11:13               ` Matvejchikov Ilya
2008-08-19 16:13                 ` Scott Wood
2008-08-21 13:04                   ` Matvejchikov Ilya
2008-07-29 19:36       ` Scott Wood
2008-07-30 13:36         ` Ben Gardiner

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=8496f91a0807281243y2193dad5hc758444fe0a10258@mail.gmail.com \
    --to=matvejchikov@gmail.com \
    --cc=linuxppc-embedded@ozlabs.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).