From: Wolfram Sang <wsa-z923LK4zBo2bacvFa/9K2g@public.gmane.org>
To: Doug Anderson <dianders-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Cc: "Uwe Kleine-König"
<u.kleine-koenig-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>,
"Addy Ke" <addy.ke-TNX95d0MmH7DzftRWevZcw@public.gmane.org>,
"Max Schwarz"
<max.schwarz-BGeptl67XyCzQB+pC5nmwQ@public.gmane.org>,
"Heiko Stübner" <heiko-4mtYJXux2i+zQB+pC5nmwQ@public.gmane.org>,
"Olof Johansson" <olof-nZhT3qVonbNeoWH0uzbU5w@public.gmane.org>,
"Rob Herring" <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
"Pawel Moll" <pawel.moll-5wv7dgnIgG8@public.gmane.org>,
"Ian Campbell"
<ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org>,
"Kumar Gala" <galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>,
"Tao Huang" <huangtao-TNX95d0MmH7DzftRWevZcw@public.gmane.org>,
"Lin Huang" <hl-TNX95d0MmH7DzftRWevZcw@public.gmane.org>,
姚智情 <yzq-TNX95d0MmH7DzftRWevZcw@public.gmane.org>,
Chris <zyw-TNX95d0MmH7DzftRWevZcw@public.gmane.org>,
"linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"Kever Yang" <kever.yang-TNX95d0MmH7DzftRWevZcw@public.gmane.org>,
"open list:ARM/Rockchip SoC..."
<linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>,
"Jianqun Xu" <xjq-TNX95d0MmH7DzftRWevZcw@public.gmane.org>,
"linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
caesar <caesar.wang-TNX95d0MmH7DzftRWevZcw@public.gmane.org>,
"Eddie Cai" <cf-TNX95d0MmH7DzftRWevZcw@public.gmane.org>,
"Han Jiang" <hj-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
Subject: Re: [PATCH v3] i2c: rk3x: fix bug that cause measured high_ns doesn't meet I2C spec
Date: Mon, 8 Dec 2014 18:34:32 +0100 [thread overview]
Message-ID: <20141208173432.GA5732@katana> (raw)
In-Reply-To: <CAD=FV=V=PDPiDhDmd+j8ePsF43EvuFP-LxKgMKo7ZRBzSMyOJA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
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> > There are different capitalisation of i2c in the patch and the commit log. I
> > don't know what Wolfram prefers here, but using the same spelling
> > everywhere would be nice.
>
> Can you please point out? IIRC you should always capitalize I2C in
> prose (descriptions, comments, documentation, etc). However when used
> in places which specific capitalization standards it should be
> lowercase. That means file names, directory names, device tree
> property names, etc should be lower case.
This is what I prefer, too. However, I am not too strict about it.
I mean, both are readable.
> >> + /* Read rise and fall ns; if not there use the default max from spec */
> >> + if (of_property_read_u32(pdev->dev.of_node, "i2c-scl-rising-time-ns",
> >> + &i2c->rise_ns)) {
> >> + if (i2c->scl_frequency <= 100000)
> >> + i2c->rise_ns = 1000;
> >> + else
> >> + i2c->rise_ns = 300;
> >> + }
> >> + if (of_property_read_u32(pdev->dev.of_node, "i2c-scl-falling-time-ns",
> >> + &i2c->fall_ns))
> >> + i2c->fall_ns = 300;
> >> +
> > I don't know if other drivers do the same (I assume they should). If so,
> > moving this logic into the core would be nice. I guess this can still be
> > done later.
Let's leave that for later. If we do it, we should start with bus speed
setting first, probably.
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WARNING: multiple messages have this Message-ID (diff)
From: wsa@the-dreams.de (Wolfram Sang)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3] i2c: rk3x: fix bug that cause measured high_ns doesn't meet I2C spec
Date: Mon, 8 Dec 2014 18:34:32 +0100 [thread overview]
Message-ID: <20141208173432.GA5732@katana> (raw)
In-Reply-To: <CAD=FV=V=PDPiDhDmd+j8ePsF43EvuFP-LxKgMKo7ZRBzSMyOJA@mail.gmail.com>
> > There are different capitalisation of i2c in the patch and the commit log. I
> > don't know what Wolfram prefers here, but using the same spelling
> > everywhere would be nice.
>
> Can you please point out? IIRC you should always capitalize I2C in
> prose (descriptions, comments, documentation, etc). However when used
> in places which specific capitalization standards it should be
> lowercase. That means file names, directory names, device tree
> property names, etc should be lower case.
This is what I prefer, too. However, I am not too strict about it.
I mean, both are readable.
> >> + /* Read rise and fall ns; if not there use the default max from spec */
> >> + if (of_property_read_u32(pdev->dev.of_node, "i2c-scl-rising-time-ns",
> >> + &i2c->rise_ns)) {
> >> + if (i2c->scl_frequency <= 100000)
> >> + i2c->rise_ns = 1000;
> >> + else
> >> + i2c->rise_ns = 300;
> >> + }
> >> + if (of_property_read_u32(pdev->dev.of_node, "i2c-scl-falling-time-ns",
> >> + &i2c->fall_ns))
> >> + i2c->fall_ns = 300;
> >> +
> > I don't know if other drivers do the same (I assume they should). If so,
> > moving this logic into the core would be nice. I guess this can still be
> > done later.
Let's leave that for later. If we do it, we should start with bus speed
setting first, probably.
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WARNING: multiple messages have this Message-ID (diff)
From: Wolfram Sang <wsa@the-dreams.de>
To: Doug Anderson <dianders@chromium.org>
Cc: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>,
"Addy Ke" <addy.ke@rock-chips.com>,
"Max Schwarz" <max.schwarz@online.de>,
"Heiko Stübner" <heiko@sntech.de>,
"Olof Johansson" <olof@lixom.net>,
"Rob Herring" <robh+dt@kernel.org>,
"Pawel Moll" <pawel.moll@arm.com>,
"Ian Campbell" <ijc+devicetree@hellion.org.uk>,
"Kumar Gala" <galak@codeaurora.org>,
"Tao Huang" <huangtao@rock-chips.com>,
"Lin Huang" <hl@rock-chips.com>, 姚智情 <yzq@rock-chips.com>,
Chris <zyw@rock-chips.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"Kever Yang" <kever.yang@rock-chips.com>,
"open list:ARM/Rockchip SoC..."
<linux-rockchip@lists.infradead.org>,
"Jianqun Xu" <xjq@rock-chips.com>,
"linux-i2c@vger.kernel.org" <linux-i2c@vger.kernel.org>,
caesar <caesar.wang@rock-chips.com>,
"Eddie Cai" <cf@rock-chips.com>, "Han Jiang" <hj@rock-chips.com>,
"Shunqian Zheng" <zhengsq@rock-chips.com>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH v3] i2c: rk3x: fix bug that cause measured high_ns doesn't meet I2C spec
Date: Mon, 8 Dec 2014 18:34:32 +0100 [thread overview]
Message-ID: <20141208173432.GA5732@katana> (raw)
In-Reply-To: <CAD=FV=V=PDPiDhDmd+j8ePsF43EvuFP-LxKgMKo7ZRBzSMyOJA@mail.gmail.com>
[-- Attachment #1: Type: text/plain, Size: 1484 bytes --]
> > There are different capitalisation of i2c in the patch and the commit log. I
> > don't know what Wolfram prefers here, but using the same spelling
> > everywhere would be nice.
>
> Can you please point out? IIRC you should always capitalize I2C in
> prose (descriptions, comments, documentation, etc). However when used
> in places which specific capitalization standards it should be
> lowercase. That means file names, directory names, device tree
> property names, etc should be lower case.
This is what I prefer, too. However, I am not too strict about it.
I mean, both are readable.
> >> + /* Read rise and fall ns; if not there use the default max from spec */
> >> + if (of_property_read_u32(pdev->dev.of_node, "i2c-scl-rising-time-ns",
> >> + &i2c->rise_ns)) {
> >> + if (i2c->scl_frequency <= 100000)
> >> + i2c->rise_ns = 1000;
> >> + else
> >> + i2c->rise_ns = 300;
> >> + }
> >> + if (of_property_read_u32(pdev->dev.of_node, "i2c-scl-falling-time-ns",
> >> + &i2c->fall_ns))
> >> + i2c->fall_ns = 300;
> >> +
> > I don't know if other drivers do the same (I assume they should). If so,
> > moving this logic into the core would be nice. I guess this can still be
> > done later.
Let's leave that for later. If we do it, we should start with bus speed
setting first, probably.
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next prev parent reply other threads:[~2014-12-08 17:34 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-06 8:11 [PATCH] i2c: rk3x: fix bug that cause measured high_ns doesn't meet I2C spec Addy Ke
2014-11-06 8:11 ` Addy Ke
2014-11-06 8:11 ` Addy Ke
2014-12-02 23:02 ` Doug Anderson
2014-12-02 23:02 ` Doug Anderson
[not found] ` <1415261514-4051-1-git-send-email-addy.ke-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
2014-12-03 2:37 ` [PATCH v2] " Addy Ke
2014-12-03 2:37 ` Addy Ke
2014-12-03 2:37 ` Addy Ke
[not found] ` <1417574237-4328-1-git-send-email-addy.ke-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
2014-12-03 5:13 ` Doug Anderson
2014-12-03 5:13 ` Doug Anderson
2014-12-03 5:13 ` Doug Anderson
2014-12-03 11:15 ` Wolfram Sang
2014-12-03 11:15 ` Wolfram Sang
2014-12-03 11:15 ` Wolfram Sang
2014-12-03 17:53 ` Doug Anderson
2014-12-03 17:53 ` Doug Anderson
2014-12-03 17:53 ` Doug Anderson
2014-12-04 18:40 ` Wolfram Sang
2014-12-04 18:40 ` Wolfram Sang
2014-12-04 18:40 ` Wolfram Sang
2014-12-04 18:43 ` Doug Anderson
2014-12-04 18:43 ` Doug Anderson
2014-12-04 18:43 ` Doug Anderson
[not found] ` <CAD=FV=Vp3hwxbDzb+FUhNXy8qW8fTCkgd67jRDV3foT0o9HQuQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-12-04 19:03 ` Wolfram Sang
2014-12-04 19:03 ` Wolfram Sang
2014-12-04 19:03 ` Wolfram Sang
2014-12-05 19:31 ` Doug Anderson
2014-12-05 19:31 ` Doug Anderson
2014-12-05 19:31 ` Doug Anderson
2014-12-08 2:59 ` [PATCH v3] " Addy Ke
2014-12-08 2:59 ` Addy Ke
2014-12-08 2:59 ` Addy Ke
[not found] ` <1418007589-3688-1-git-send-email-addy.ke-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
2014-12-08 3:06 ` addy ke
2014-12-08 3:06 ` addy ke
2014-12-08 3:06 ` addy ke
2014-12-11 6:00 ` [PATCH v4] i2c: rk3x: fix bug that cause measured high_ns doesn't meet I2C specification Addy Ke
2014-12-11 6:00 ` Addy Ke
2014-12-11 6:00 ` Addy Ke
[not found] ` <1418277650-25215-1-git-send-email-addy.ke-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
2014-12-11 7:47 ` Uwe Kleine-König
2014-12-11 7:47 ` Uwe Kleine-König
2014-12-11 7:47 ` Uwe Kleine-König
2014-12-11 11:02 ` [PATCH v5] " Addy Ke
2014-12-11 11:02 ` Addy Ke
2014-12-11 19:22 ` Doug Anderson
2014-12-11 19:22 ` Doug Anderson
2014-12-11 19:22 ` Doug Anderson
[not found] ` <1418295760-19639-1-git-send-email-addy.ke-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
2015-01-13 11:42 ` Wolfram Sang
2015-01-13 11:42 ` Wolfram Sang
2015-01-13 11:42 ` Wolfram Sang
2014-12-08 8:52 ` [PATCH v3] i2c: rk3x: fix bug that cause measured high_ns doesn't meet I2C spec Uwe Kleine-König
2014-12-08 8:52 ` Uwe Kleine-König
[not found] ` <20141208085202.GA13486-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
2014-12-08 17:13 ` Doug Anderson
2014-12-08 17:13 ` Doug Anderson
2014-12-08 17:13 ` Doug Anderson
[not found] ` <CAD=FV=V=PDPiDhDmd+j8ePsF43EvuFP-LxKgMKo7ZRBzSMyOJA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-12-08 17:34 ` Wolfram Sang [this message]
2014-12-08 17:34 ` Wolfram Sang
2014-12-08 17:34 ` Wolfram Sang
2014-12-08 18:53 ` Doug Anderson
2014-12-08 18:53 ` Doug Anderson
2014-12-08 18:53 ` Doug Anderson
2014-12-08 20:04 ` Uwe Kleine-König
2014-12-08 20:04 ` Uwe Kleine-König
2014-12-08 20:04 ` Uwe Kleine-König
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