From: "David Lanzendörfer" <david.lanzendoerfer@o2s.ch>
To: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: Mike Turquette <mturquette@linaro.org>,
Hans de Goede <hdegoede@redhat.com>,
Emilio Lopez <emilio@elopez.com.ar>,
chris@printf.net, ulf.hansson@linaro.org,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-mmc@vger.kernel.org, wens@csie.org
Subject: Re: [PATCH v3 11/12] mmc: sunxi: Convert MMC driver to the standard clock phase API
Date: Fri, 26 Sep 2014 22:47:40 +0200 [thread overview]
Message-ID: <16423025.s6ZiXuohCJ@dizzy-6.o2s.ch> (raw)
In-Reply-To: <20140926150204.GT15315@lukather>
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Hi
Great! Since I didn't see any mistakes from my side it shouldn't be a problem.
Because someone has borrowed my UART2USB(FT232)-cable I unfortunately can't
test the code for now.
If you can verfiy that all the adaptions are working properly on A10/A20 and
all the others you my assume my:
Acked-by: David Lanzendörfer <david.lanzendoerfer@o2s.ch>
chears and all the best
david
> > > [...]
> > How did you calculate the actual phase values from the original
> > parameters?
>
> Like shown in the clock driver. 0 is always a 180 deg phase shift, and
> any other value is the number of the parent clock cycle to outphase
> the clock of.
>
> the clock out phase is calculating using:
>
> phase = 360 * interval / period.
>
> with period = 1 / (parent_freq / divider)
> and interval = reg / parent_freq
>
> which makes
>
> phase = 360 * (reg / parent_freq) * (parent_freq / divider)
>
> If we simplify by removing the parent_freq, we end up with
>
> phase = 360 * reg / divider, which makes it rather trivial to
> calculate.
>
> Maxime
--
David Lanzendörfer
OpenSourceSupport GmbH
System engineer and supporter
http://www.o2s.ch/
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WARNING: multiple messages have this Message-ID (diff)
From: david.lanzendoerfer@o2s.ch (David Lanzendörfer)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 11/12] mmc: sunxi: Convert MMC driver to the standard clock phase API
Date: Fri, 26 Sep 2014 22:47:40 +0200 [thread overview]
Message-ID: <16423025.s6ZiXuohCJ@dizzy-6.o2s.ch> (raw)
In-Reply-To: <20140926150204.GT15315@lukather>
Hi
Great! Since I didn't see any mistakes from my side it shouldn't be a problem.
Because someone has borrowed my UART2USB(FT232)-cable I unfortunately can't
test the code for now.
If you can verfiy that all the adaptions are working properly on A10/A20 and
all the others you my assume my:
Acked-by: David Lanzend?rfer <david.lanzendoerfer@o2s.ch>
chears and all the best
david
> > > [...]
> > How did you calculate the actual phase values from the original
> > parameters?
>
> Like shown in the clock driver. 0 is always a 180 deg phase shift, and
> any other value is the number of the parent clock cycle to outphase
> the clock of.
>
> the clock out phase is calculating using:
>
> phase = 360 * interval / period.
>
> with period = 1 / (parent_freq / divider)
> and interval = reg / parent_freq
>
> which makes
>
> phase = 360 * (reg / parent_freq) * (parent_freq / divider)
>
> If we simplify by removing the parent_freq, we end up with
>
> phase = 360 * reg / divider, which makes it rather trivial to
> calculate.
>
> Maxime
--
David Lanzend?rfer
OpenSourceSupport GmbH
System engineer and supporter
http://www.o2s.ch/
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next prev parent reply other threads:[~2014-09-26 20:47 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-11 20:18 [PATCH v3 00/12] clk: sunxi: Improve MMC clocks support Maxime Ripard
2014-09-11 20:18 ` Maxime Ripard
2014-09-11 20:18 ` [PATCH v3 01/12] clk: introduce clk_set_phase function & callback Maxime Ripard
2014-09-11 20:18 ` Maxime Ripard
2014-09-24 10:41 ` Heiko Stübner
2014-09-24 10:41 ` Heiko Stübner
2014-09-11 20:18 ` [PATCH v3 02/12] clk: Include of.h in clock-provider.h Maxime Ripard
2014-09-11 20:18 ` Maxime Ripard
2014-09-11 20:18 ` [PATCH v3 03/12] clk: Add a function to retrieve phase Maxime Ripard
2014-09-11 20:18 ` Maxime Ripard
2014-09-24 10:42 ` Heiko Stübner
2014-09-24 10:42 ` Heiko Stübner
2014-09-28 0:17 ` Mike Turquette
2014-09-28 0:17 ` Mike Turquette
2014-09-29 8:24 ` Maxime Ripard
2014-09-29 8:24 ` Maxime Ripard
2014-09-30 7:01 ` Mike Turquette
2014-09-30 7:01 ` Mike Turquette
2014-09-11 20:18 ` [PATCH v3 05/12] clk: sunxi: Introduce mbus compatible Maxime Ripard
2014-09-11 20:18 ` Maxime Ripard
2014-09-11 20:18 ` [PATCH v3 07/12] clk: sunxi: Move mod0 clock to a file of its own Maxime Ripard
2014-09-11 20:18 ` Maxime Ripard
2014-09-11 20:18 ` [PATCH v3 08/12] clk: sunxi: Move mbus to mod0 file Maxime Ripard
2014-09-11 20:18 ` Maxime Ripard
[not found] ` <1410466706-27386-1-git-send-email-maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
2014-09-11 20:18 ` [PATCH v3 04/12] clk: sunxi: factors: Invert the probing logic Maxime Ripard
2014-09-11 20:18 ` Maxime Ripard
2014-09-11 20:18 ` [PATCH v3 06/12] ARM: sunxi: dt: Switch to the new mbus compatible Maxime Ripard
2014-09-11 20:18 ` Maxime Ripard
2014-09-11 20:18 ` [PATCH v3 09/12] ARM: sunxi: dt: Add sample and output mmc clocks Maxime Ripard
2014-09-11 20:18 ` Maxime Ripard
2014-09-12 10:23 ` Chen-Yu Tsai
2014-09-12 10:23 ` Chen-Yu Tsai
2014-09-13 8:18 ` Maxime Ripard
2014-09-13 8:18 ` Maxime Ripard
2014-09-13 8:24 ` Chen-Yu Tsai
2014-09-13 8:24 ` Chen-Yu Tsai
2014-09-11 20:18 ` [PATCH v3 10/12] clk: sunxi: mod0: Introduce MMC proper phase handling Maxime Ripard
2014-09-11 20:18 ` Maxime Ripard
2014-09-11 20:18 ` [PATCH v3 11/12] mmc: sunxi: Convert MMC driver to the standard clock phase API Maxime Ripard
2014-09-11 20:18 ` Maxime Ripard
2014-09-26 14:27 ` David Lanzendörfer
2014-09-26 14:27 ` David Lanzendörfer
[not found] ` <3992138.y6J8TjIuMq-pgFh0Jf6HD9Xzn/AsuzBOg@public.gmane.org>
2014-09-26 15:02 ` Maxime Ripard
2014-09-26 15:02 ` Maxime Ripard
2014-09-26 20:47 ` David Lanzendörfer [this message]
2014-09-26 20:47 ` David Lanzendörfer
2014-09-11 20:18 ` [PATCH v3 12/12] clk: sunxi: Remove custom phase function Maxime Ripard
2014-09-11 20:18 ` Maxime Ripard
2014-09-12 7:22 ` [PATCH v3 00/12] clk: sunxi: Improve MMC clocks support Hans de Goede
2014-09-12 7:22 ` Hans de Goede
2014-09-22 11:31 ` Maxime Ripard
2014-09-22 11:31 ` Maxime Ripard
2014-09-26 0:42 ` Mike Turquette
2014-09-26 0:42 ` Mike Turquette
2014-09-26 6:55 ` Maxime Ripard
2014-09-26 6:55 ` Maxime Ripard
2014-09-26 17:52 ` Mike Turquette
2014-09-26 17:52 ` Mike Turquette
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