From: Valentine Barshak <vbarshak@ru•mvista.com>
To: Josh Boyer <jwboyer@linux•vnet.ibm.com>
Cc: linuxppc-dev@ozlabs•org, David Gibson <david@gibson•dropbear.id.au>
Subject: Re: [PATCH 2/2] PowerPC: Fix Sequoia MAL0 and EMAC dts entries.
Date: Thu, 20 Sep 2007 22:55:54 +0400 [thread overview]
Message-ID: <46F2C23A.40001@ru.mvista.com> (raw)
In-Reply-To: <20070920135153.588cfd61@weaponx.rchland.ibm.com>
Josh Boyer wrote:
> On Thu, 20 Sep 2007 22:46:18 +0400
> Valentine Barshak <vbarshak@ru•mvista.com> wrote:
>
>> Valentine Barshak wrote:
>>> David Gibson wrote:
>>>> On Tue, Sep 18, 2007 at 09:29:13PM +0400, Valentine Barshak wrote:
>>>>> According to PowerPC 440EPx documentation,
>>>>> MAL0 is comprised of four channels (two transmit and two receive).
>>>>> Each channel is dedicated to one of two EMAC cores.
>>>>> This patch fixes Sequoia DTS MAL0 entry and EMAC entries,
>>>>> assigning correct channel numbers to EMACs.
>>>> Hrm.. did they change the EMAC in 440EPx to only use one MAL
>>>> tx-channel? All the older ones could use two (for no readily apparent
>>>> reason, IMO).
>>>>
>>> Yes, they did.
>>> Just 1 tx and 1 rx-channel per EMAC. Just 2 bits to select channels,
>>> while all other bits in MAL registers are reserved.
>>> I'm not sure why they did it (possible bus bandwidth problems), but it's
>>> impossible to set more than 1 rx/tx channel for each EMAC in 440EPx.
>> Josh, David, is this patch OK?
>
> Yeah. I applied it to my tree and asked Paul to pull. Same for the
> Bamboo one.
>
> josh
OK thanks :)
prev parent reply other threads:[~2007-09-20 18:56 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-18 17:25 [PATCH 0/2] PowerPC: Fix MAL0 DTS entries for Bamboo and Sequoia Valentine Barshak
2007-09-18 17:27 ` [PATCH 1/2] PowerPC: Fix Bamboo MAL0 dts entry Valentine Barshak
2007-09-18 17:29 ` [PATCH 2/2] PowerPC: Fix Sequoia MAL0 and EMAC dts entries Valentine Barshak
2007-09-19 1:05 ` David Gibson
2007-09-19 11:14 ` Valentine Barshak
2007-09-20 18:46 ` Valentine Barshak
2007-09-20 18:51 ` Josh Boyer
2007-09-20 18:55 ` Valentine Barshak [this message]
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