From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
To: Jiada Wang <jiada_wang@mentor.com>
Cc: nick@shmanahar.org, linux-input@vger.kernel.org,
linux-kernel@vger.kernel.org, digetx@gmail.com,
andy.shevchenko@gmail.com, erosca@de.adit-jv.com,
Andrew_Gabbasov@mentor.com
Subject: Re: [PATCH v4 1/1] Input: atmel_mxt_ts - implement I2C retries
Date: Sun, 13 Sep 2020 09:56:44 -0700 [thread overview]
Message-ID: <20200913165644.GF1665100@dtor-ws> (raw)
In-Reply-To: <20200912005521.26319-1-jiada_wang@mentor.com>
Hi Jiada,
On Sat, Sep 12, 2020 at 09:55:21AM +0900, Jiada Wang wrote:
> From: Nick Dyer <nick.dyer@itdev.co.uk>
>
> Some maXTouch chips (eg mXT1386) will not respond on the first I2C request
> when they are in a sleep state. It must be retried after a delay for the
> chip to wake up.
Do we know when the chip is in sleep state? Can we do a quick I2C
transaction in this case instead of adding retry logic to everything? Or
there is another benefit for having such retry logic?
Thanks.
--
Dmitry
next prev parent reply other threads:[~2020-09-13 16:56 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-12 0:55 [PATCH v4 1/1] Input: atmel_mxt_ts - implement I2C retries Jiada Wang
2020-09-13 8:43 ` Andy Shevchenko
2020-09-13 12:57 ` Dmitry Osipenko
2020-09-14 13:49 ` Andy Shevchenko
2020-09-14 15:26 ` Dmitry Osipenko
2020-09-14 15:50 ` Andy Shevchenko
2020-09-14 16:28 ` Dmitry Osipenko
2020-09-13 16:56 ` Dmitry Torokhov [this message]
2020-09-14 17:29 ` Dmitry Osipenko
2020-09-14 19:33 ` Dmitry Torokhov
2020-09-14 19:36 ` Dmitry Torokhov
2020-09-14 21:33 ` Dmitry Osipenko
2020-09-14 22:32 ` Dmitry Torokhov
2020-09-15 1:13 ` Rob Herring
2020-09-15 15:55 ` Wang, Jiada
2020-09-15 17:40 ` Dmitry Osipenko
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