From: Tony Lindgren <tony@atomide.com>
To: "H. Nikolaus Schaller" <hns@goldelico.com>
Cc: Andreas Kemnade <andreas@kemnade.info>,
Evgeniy Polyakov <zbr@ioremap.net>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-omap <linux-omap@vger.kernel.org>,
Adam Ford <aford173@gmail.com>, "Andrew F . Davis" <afd@ti.com>,
Vignesh R <vigneshr@ti.com>
Subject: Re: [PATCHv3] w1: omap-hdq: Simplify driver with PM runtime autosuspend
Date: Mon, 20 Apr 2020 08:08:02 -0700 [thread overview]
Message-ID: <20200420150802.GR37466@atomide.com> (raw)
In-Reply-To: <8E062482-5D5D-4837-9980-D6C708DD24D4@goldelico.com>
* H. Nikolaus Schaller <hns@goldelico.com> [200417 21:04]:
> To me it looks as if reading hqd too quickly after omap_hdq_runtime_resume()
> may be part of the problem, although it is 0.4 seconds between [ 18.355163]
> and [ 18.745269]. So I am not sure about my interpretation.
>
> A different attempt for interpretation may be that trying to read the
> slave triggers omap_hdq_runtime_resume() just before doing the
> first hdq_read_byte().
Hmm so I wonder if adding msleep(100) at the end of
omap_hdq_runtime_resume() might help?
Regards,
Tony
next prev parent reply other threads:[~2020-04-20 15:08 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-17 0:40 [PATCHv3] w1: omap-hdq: Simplify driver with PM runtime autosuspend Tony Lindgren
2020-04-16 15:02 ` H. Nikolaus Schaller
2020-04-16 18:46 ` Tony Lindgren
2020-04-16 20:04 ` Andreas Kemnade
2020-04-16 20:33 ` Tony Lindgren
2020-04-17 14:21 ` H. Nikolaus Schaller
2020-04-17 14:22 ` H. Nikolaus Schaller
2020-04-17 14:43 ` Andreas Kemnade
2020-04-17 14:52 ` H. Nikolaus Schaller
2020-04-17 15:07 ` Tony Lindgren
2020-04-17 15:14 ` Tony Lindgren
2020-04-17 15:36 ` Andreas Kemnade
2020-04-17 21:03 ` H. Nikolaus Schaller
2020-04-20 15:08 ` Tony Lindgren [this message]
2020-04-20 21:11 ` H. Nikolaus Schaller
2020-04-21 6:53 ` Andreas Kemnade
2020-04-21 18:02 ` Tony Lindgren
2020-04-21 18:13 ` H. Nikolaus Schaller
2020-04-21 18:20 ` Tony Lindgren
2020-04-21 18:24 ` Andreas Kemnade
2020-04-21 20:40 ` H. Nikolaus Schaller
2020-04-22 10:04 ` Andreas Kemnade
2020-04-22 16:06 ` H. Nikolaus Schaller
[not found] ` <A2AC3E81-49B2-4CF2-A7CF-6075AEB1B72D@goldelico.com>
2020-04-25 10:29 ` H. Nikolaus Schaller
2020-04-25 10:37 ` H. Nikolaus Schaller
2020-04-29 21:34 ` H. Nikolaus Schaller
2020-04-29 21:38 ` Tony Lindgren
2020-05-09 11:47 ` H. Nikolaus Schaller
2020-05-09 13:59 ` Tony Lindgren
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