[PATCH 1/2] drm/kms: Make i2c buses faster
alexdeucher at gmail.com
Sat Oct 22 07:38:58 PDT 2011
On Fri, Oct 21, 2011 at 3:29 PM, Jean Delvare <jdelvare at suse.de> wrote:
> Hi Alex,
> On Friday 21 October 2011 08:05:48 pm Alex Deucher wrote:
>> On Fri, Oct 21, 2011 at 10:16 AM, Jean Delvare <jdelvare at suse.de>
>> > Does anyone know at which speed hardware I2C engines are running
>> > the DDC bus on various graphics cards?
>> IIRC, we generally target the radeon hw i2c engines to run at 50 khz.
> Then it doesn't seem unreasonable to try and achieve the same for bit-
> banged I2C. That's exactly what my patch is doing.
Seems fine to me then. I don't know why we set it so low to begin
with, but I'm certainly not an i2c expert.
> Jean Delvare
> Suse L3
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