From: Tomi Valkeinen <tomi.valkeinen@ti.com>
To: "J.D. Schroeder" <Linux.HWI@garmin.com>,
linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org,
linux-fbdev@vger.kernel.org, misael.lopez@ti.com
Cc: "Lodes, Jim" <jim.lodes@garmin.com>,
"J.D. Schroeder" <jay.schroeder@garmin.com>
Subject: Re: [PATCH] OMAPDSS: HDMI5: Change DDC timings
Date: Thu, 21 Apr 2016 14:38:43 +0000 [thread overview]
Message-ID: <5718E5F3.2080504@ti.com> (raw)
In-Reply-To: <1461196973-20370-1-git-send-email-Linux.HWI@garmin.com>
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Hi,
On 21/04/16 03:02, J.D. Schroeder wrote:
> From: "Lodes, Jim" <jim.lodes@garmin.com>
>
> The DDC scl high and low times were set to the minimum values
> from the i2c specification, but the i2c specification takes into
> account the rise time and fall time to calculate the frequency.
> To pass HDMI certification DDC can not exceed 100kHz therefore in
> a system where the rise times and fall times are negligible the high
> and low times for scl need to be 10us.
Thanks, makes sense. Did you measure the rise & fall times? Do you get
more or less exactly 100kHz with the new times?
> Signed-off-by: Lodes, Jim <jim.lodes@garmin.com>
The email format should be
Firstname Lastname <firstname.lastname@foo.bar>
Or something similar, but not "Lastname, Firstname"
Tomi
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next prev parent reply other threads:[~2016-04-21 14:38 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-21 0:02 [PATCH] OMAPDSS: HDMI5: Change DDC timings J.D. Schroeder
2016-04-21 14:38 ` Tomi Valkeinen [this message]
2016-04-21 16:04 ` J.D. Schroeder
2016-04-21 17:27 ` [PATCH v2] " J.D. Schroeder
2016-04-27 5:55 ` Tomi Valkeinen
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