linux-kernel - Re: [PATCH 34/35] W1: Documentation/w1/masters/ds2490 update

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Message-ID: <20080330114335.GM15122@2ka.mipt.ru>
Date:	Sun, 30 Mar 2008 15:43:35 +0400
From:	Evgeniy Polyakov <johnpol@....mipt.ru>
To:	David Fries <david@...es.net>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 34/35] W1: Documentation/w1/masters/ds2490 update

On Fri, Mar 28, 2008 at 07:27:59AM -0500, David Fries (david@...es.net) wrote:
> Provide some additional details about the status of the driver.
> 
> Signed-off-by: David Fries <david@...es.net>
> ---
>  Documentation/w1/masters/ds2490 |   60 +++++++++++++++++++++++++++++++++++++++
>  1 files changed, 60 insertions(+), 0 deletions(-)
> 
> diff --git a/Documentation/w1/masters/ds2490 b/Documentation/w1/masters/ds2490
> index 239f9ae..4b7b8ee 100644
> --- a/Documentation/w1/masters/ds2490
> +++ b/Documentation/w1/masters/ds2490
> @@ -16,3 +16,63 @@ which allows to build USB <-> W1 bridges.
>  DS9490(R) is a USB <-> W1 bus master device
>  which has 0x81 family ID integrated chip and DS2490
>  low-level operational chip.
> +
> +Notes and limitations.
> +- The 5V strong pullup is supported.
> +- While the ds2490 supports a hardware search the code doesn't take
> +  advantage of it.

It does not actually - at least my hardware can only find first device
on the bus, so I dropped the implementation.

I generally ack whe whole ds2490 changes except pullup one - it has
to be turned off by default, presumably tested with multiple devices on
the same wire.

David, thanks a lot for your work on w1 drivers.

-- 
	Evgeniy Polyakov
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