Re: [PATCH] i2c: imx: add retries for i2c-0 on Ventana boards

From: Tim Harvey
Date: Fri Jul 08 2016 - 15:49:23 EST

On Thu, Jul 7, 2016 at 11:28 PM, Uwe Kleine-KÃnig
<u.kleine-koenig@xxxxxxxxxxxxxx> wrote:
> Hello Tim,
> On Thu, Jul 07, 2016 at 07:03:49AM -0700, Tim Harvey wrote:
>> Gateworks Ventana IMX6 based boards have a Gateworks System Controller [1]
>> (gsc) device that can NAK i2c transactions when its busy in an ADC loop. As
>> this is always on i2c-0 we will add retries for that bus for any Ventana
>> board.
> The right thing is to fix the drivers IMHO.

Hi Uwe,

Thanks for the feedack!

The issue I have is that the i2c device emulates several other devices
with existing drivers (pca953x, ds1672, at24) and those drivers don't
have any retry mechanism in place for a retry.

Maybe if I converted those drivers to use regmap I could implement a
regmap with retries in the mfd driver for my device?