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From: Karl Hiramoto <karl@hiramoto.org>
To: ath9k-devel@lists.ath9k.org
Subject: [ath9k-devel] PCI IRQ Pins
Date: Thu, 21 May 2009 21:12:21 +0200	[thread overview]
Message-ID: <4A15A795.4090100@hiramoto.org> (raw)
In-Reply-To: <m3r5yi9zkr.fsf@intrepid.localdomain>

Krzysztof Halasa wrote:
> Karl Hiramoto <karl@hiramoto.org> writes:
>
>   
>> Sorry, think i misspoke,  after reading the IXP4xx dev manual it says 
>> 66Mhz PCI version 2.2.
>>     
>
> Typically the PCI clock on IXP4xx is 33 MHz but your board can use any
> value from 0 to 66.666 MHz. Most wifi cards don't work with 66 MHz,
> though. The only card working @ 66 MHz for me is CM9 (all cards I have
> fail to connect the M66EN line to ground, so they simply don't work
> instead of forcing 33 MHz clock). They are all based on ath5 chips.
>   
checking IXP4XX_EXP_CFG0  bit 4 is 0  so PCI_CLK  should be 33mhz

So i shouldn't have to tie the M66EN to ground.

--
Karl

WARNING: multiple messages have this Message-ID (diff)
From: Karl Hiramoto <karl@hiramoto.org>
To: Krzysztof Halasa <khc@pm.waw.pl>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>,
	linux-ide@vger.kernel.org,
	"ath9k-devel@lists.ath9k.org" <ath9k-devel@lists.ath9k.org>,
	Russell King - ARM Linux <linux@arm.linux.org.uk>,
	linux-arm-kernel <linux-arm-kernel@lists.arm.linux.org.uk>
Subject: Re: PCI IRQ Pins
Date: Thu, 21 May 2009 21:12:21 +0200	[thread overview]
Message-ID: <4A15A795.4090100@hiramoto.org> (raw)
In-Reply-To: <m3r5yi9zkr.fsf@intrepid.localdomain>

Krzysztof Halasa wrote:
> Karl Hiramoto <karl@hiramoto.org> writes:
>
>   
>> Sorry, think i misspoke,  after reading the IXP4xx dev manual it says 
>> 66Mhz PCI version 2.2.
>>     
>
> Typically the PCI clock on IXP4xx is 33 MHz but your board can use any
> value from 0 to 66.666 MHz. Most wifi cards don't work with 66 MHz,
> though. The only card working @ 66 MHz for me is CM9 (all cards I have
> fail to connect the M66EN line to ground, so they simply don't work
> instead of forcing 33 MHz clock). They are all based on ath5 chips.
>   
checking IXP4XX_EXP_CFG0  bit 4 is 0  so PCI_CLK  should be 33mhz

So i shouldn't have to tie the M66EN to ground.

--
Karl

  reply	other threads:[~2009-05-21 19:12 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-05-20 11:41 [ath9k-devel] PCI IRQ Pins Karl Hiramoto
2009-05-20 12:39 ` Krzysztof Halasa
2009-05-20 20:51   ` Russell King - ARM Linux
2009-05-20 21:43     ` Krzysztof Halasa
2009-05-21  6:14       ` Karl Hiramoto
2009-05-21  6:14         ` Karl Hiramoto
2009-05-21  8:06         ` [ath9k-devel] " Karl Hiramoto
2009-05-21  8:06           ` Karl Hiramoto
2009-05-21 14:45           ` [ath9k-devel] " Sergei Shtylyov
2009-05-21 14:45             ` Sergei Shtylyov
2009-05-21 14:50             ` [ath9k-devel] " Karl Hiramoto
2009-05-21 14:50               ` Karl Hiramoto
2009-05-21 15:07               ` [ath9k-devel] " Karl Hiramoto
2009-05-21 15:07                 ` Karl Hiramoto
2009-05-21 16:43                 ` [ath9k-devel] " Krzysztof Halasa
2009-05-21 16:43                   ` Krzysztof Halasa
2009-05-21 19:12                   ` Karl Hiramoto [this message]
2009-05-21 19:12                     ` Karl Hiramoto
2009-05-21 16:44               ` [ath9k-devel] " Sergei Shtylyov
2009-05-21 16:44                 ` Sergei Shtylyov
2009-05-21 11:04         ` [ath9k-devel] " Krzysztof Halasa
2009-05-21 11:04           ` Krzysztof Halasa
2009-05-21 16:19           ` [ath9k-devel] " Karl Hiramoto
2009-05-21 16:19             ` Karl Hiramoto
2009-05-20 12:40 ` [ath9k-devel] " Michael Schwingen

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