From: Stephen Warren <swarren@wwwdotorg.org>
To: Nicola Corna <nicola@corna.info>, Eric Anholt <eric@anholt.net>
Cc: Wolfram Sang <wsa@the-dreams.de>, Lee Jones <lee@kernel.org>,
Jonathan Cameron <jic23@kernel.org>,
linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
Hartmut Knaack <knaack.h@gmx.de>,
Lars-Peter Clausen <lars@metafoo.de>,
Peter Meerwald <pmeerw@pmeerw.net>,
linux-iio@vger.kernel.org
Subject: Re: [PATCH 3/4] i2c: added I2C_AQ_NO_CLK_STRETCH to i2c-bcm2835.c
Date: Wed, 28 Oct 2015 22:10:53 -0600 [thread overview]
Message-ID: <56319C4D.9020807@wwwdotorg.org> (raw)
In-Reply-To: <1445976718-7449-3-git-send-email-nicola@corna.info>
On 10/27/2015 02:11 PM, Nicola Corna wrote:
> As reported here
> http://www.advamation.com/knowhow/raspberrypi/rpi-i2c-bug.html
> the BCM2835 has a bug in its i2c implementation which prevents a correct
> clock stretching.
I was going to ask for some more official confirmation of this bug (e.g.
update to BCM2835_Peripherals.pdf), but it looks like it's already been
confirmed; check Gert van Loo's responses at:
https://www.raspberrypi.org/forums/viewtopic.php?p=146272
It might be useful to add this link into the patch description.
WARNING: multiple messages have this Message-ID (diff)
From: swarren@wwwdotorg.org (Stephen Warren)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 3/4] i2c: added I2C_AQ_NO_CLK_STRETCH to i2c-bcm2835.c
Date: Wed, 28 Oct 2015 22:10:53 -0600 [thread overview]
Message-ID: <56319C4D.9020807@wwwdotorg.org> (raw)
In-Reply-To: <1445976718-7449-3-git-send-email-nicola@corna.info>
On 10/27/2015 02:11 PM, Nicola Corna wrote:
> As reported here
> http://www.advamation.com/knowhow/raspberrypi/rpi-i2c-bug.html
> the BCM2835 has a bug in its i2c implementation which prevents a correct
> clock stretching.
I was going to ask for some more official confirmation of this bug (e.g.
update to BCM2835_Peripherals.pdf), but it looks like it's already been
confirmed; check Gert van Loo's responses at:
https://www.raspberrypi.org/forums/viewtopic.php?p=146272
It might be useful to add this link into the patch description.
next prev parent reply other threads:[~2015-10-29 4:10 UTC|newest]
Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-27 20:11 [PATCH 1/4] i2c: added i2c quirk flag for unsupported clock stretching Nicola Corna
2015-10-27 20:11 ` Nicola Corna
2015-10-27 20:11 ` Nicola Corna
2015-10-27 20:11 ` [PATCH 2/4] i2c: added I2C_AQ_NO_CLK_STRETCH to i2c-algo-bit.c Nicola Corna
2015-10-27 20:11 ` Nicola Corna
2015-10-27 20:11 ` Nicola Corna
2015-10-27 20:11 ` [PATCH 3/4] i2c: added I2C_AQ_NO_CLK_STRETCH to i2c-bcm2835.c Nicola Corna
2015-10-27 20:11 ` Nicola Corna
2015-10-27 20:11 ` Nicola Corna
[not found] ` <1445976718-7449-3-git-send-email-nicola-V0pQiMyom5mh6J55Ss3d3w@public.gmane.org>
2015-10-28 19:16 ` Eric Anholt
2015-10-28 19:16 ` Eric Anholt
2015-10-28 19:16 ` Eric Anholt
2015-10-29 4:10 ` Stephen Warren [this message]
2015-10-29 4:10 ` Stephen Warren
2015-10-27 20:11 ` [PATCH v3 4/4] iio: humidity: si7020: added No Hold read mode Nicola Corna
2015-10-27 20:11 ` Nicola Corna
2015-10-27 20:11 ` Nicola Corna
2015-10-27 23:30 ` Wolfram Sang
2015-10-27 23:30 ` Wolfram Sang
2015-10-28 6:46 ` Nicola Corna
2015-10-28 6:46 ` Nicola Corna
2015-10-28 6:46 ` Nicola Corna
2015-10-28 6:58 ` [PATCH v4 " Nicola Corna
2015-10-28 6:58 ` Nicola Corna
2015-10-28 6:58 ` Nicola Corna
[not found] ` <1446015506-21371-1-git-send-email-nicola-V0pQiMyom5mh6J55Ss3d3w@public.gmane.org>
2015-10-28 9:38 ` Lars-Peter Clausen
2015-10-28 9:38 ` Lars-Peter Clausen
2015-10-28 9:38 ` Lars-Peter Clausen
2015-10-28 18:35 ` Nicola Corna
2015-10-28 18:35 ` Nicola Corna
2015-10-28 18:46 ` Lars-Peter Clausen
2015-10-28 18:46 ` Lars-Peter Clausen
2015-10-28 20:17 ` Nicola Corna
2015-10-28 20:17 ` Nicola Corna
2015-10-28 20:17 ` Nicola Corna
[not found] ` <563117FB.5030506-Qo5EllUWu/uELgA04lAiVw@public.gmane.org>
2015-10-28 20:19 ` Nicola Corna
2015-10-28 20:19 ` Nicola Corna
2015-10-28 20:19 ` Nicola Corna
2015-10-29 9:17 ` Lars-Peter Clausen
2015-10-29 9:17 ` Lars-Peter Clausen
2015-10-29 11:34 ` [PATCH v2 1/5] i2c: add i2c quirk flag for unsupported clock stretching Nicola Corna
2015-10-29 11:34 ` Nicola Corna
2015-10-29 11:34 ` Nicola Corna
2015-10-29 11:34 ` [PATCH v2 2/5] i2c: add I2C_AQ_NO_CLK_STRETCH to i2c-algo-bit.c Nicola Corna
2015-10-29 11:34 ` Nicola Corna
2015-10-29 11:34 ` Nicola Corna
[not found] ` <1446118467-26453-2-git-send-email-nicola-V0pQiMyom5mh6J55Ss3d3w@public.gmane.org>
2015-11-30 17:26 ` Wolfram Sang
2015-11-30 17:26 ` Wolfram Sang
2015-11-30 17:26 ` Wolfram Sang
2015-10-29 11:34 ` [PATCH v2 3/5] i2c: add I2C_AQ_NO_CLK_STRETCH to i2c-bcm2835.c Nicola Corna
2015-10-29 11:34 ` Nicola Corna
2015-10-29 11:34 ` Nicola Corna
2015-11-30 17:27 ` Wolfram Sang
2015-11-30 17:27 ` Wolfram Sang
2015-10-29 11:34 ` [PATCH 4/5] i2c: add i2c_check_quirks helper function Nicola Corna
2015-10-29 11:34 ` Nicola Corna
2015-10-29 11:34 ` Nicola Corna
[not found] ` <1446118467-26453-4-git-send-email-nicola-V0pQiMyom5mh6J55Ss3d3w@public.gmane.org>
2015-10-31 10:18 ` Jonathan Cameron
2015-10-31 10:18 ` Jonathan Cameron
2015-10-31 10:18 ` Jonathan Cameron
[not found] ` <56349581.8070900-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2015-11-30 17:28 ` Wolfram Sang
2015-11-30 17:28 ` Wolfram Sang
2015-11-30 17:28 ` Wolfram Sang
2015-11-30 17:30 ` Wolfram Sang
2015-11-30 17:30 ` Wolfram Sang
2015-10-29 11:34 ` [PATCH v5 5/5] iio: humidity: si7020: add No Hold read mode Nicola Corna
2015-10-29 11:34 ` Nicola Corna
2015-10-29 11:34 ` Nicola Corna
2015-10-31 10:21 ` Jonathan Cameron
2015-10-31 10:21 ` Jonathan Cameron
[not found] ` <56349644.2060308-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2015-11-30 17:33 ` Wolfram Sang
2015-11-30 17:33 ` Wolfram Sang
2015-11-30 17:33 ` Wolfram Sang
2015-12-05 18:24 ` Jonathan Cameron
2015-12-05 18:24 ` Jonathan Cameron
2015-12-05 19:01 ` Wolfram Sang
2015-12-05 19:01 ` Wolfram Sang
2017-05-10 14:46 ` Andrea Galbusera
2015-11-30 17:24 ` [PATCH v2 1/5] i2c: add i2c quirk flag for unsupported clock stretching Wolfram Sang
2015-11-30 17:24 ` Wolfram Sang
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