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From: Laurent Pinchart <laurentp@cse-semaphore.com>
To: linuxppc-embedded@ozlabs.org
Subject: Re: 8270 & Watchdog - early start - II
Date: Thu, 20 Sep 2007 13:22:07 +0200
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On Thursday 20 September 2007 12:06, Matias Sundman wrote:
> Hi Guys,
> The Software Service Register (SWSR) is 16-bit wide which Laurent
> Pinchart [laurentp@cse-semaphore.com] so nicely pointed out for me.
> So it actually works with;
> *((volatile unsigned short*)(0xf001000e))=3D0x556c;
> *((volatile unsigned short*)(0xf001000e))=3D0xaa39;

You still shouldn't use direct access with MMU enabled. Use the global CPM=
=20
mapping and the I/O access macros.

out_be16(&cpm2_immr->im_siu_conf.siu_82xx.sc_swsr, 0x556c);
out_be16(&cpm2_immr->im_siu_conf.siu_82xx.sc_swsr, 0xaa39);

Best regards,

=2D-=20
Laurent Pinchart
CSE Semaphore Belgium

Chauss=C3=A9e de Bruxelles, 732A
B-1410 Waterloo
Belgium

T +32 (2) 387 42 59
=46 +32 (2) 387 42 75