From: Nishanth Menon <nm@ti.com>
To: Joachim Eastwood <manabian@gmail.com>
Cc: Tony Lindgren <tony@atomide.com>, Paul Walmsley <paul@pwsan.com>,
Kevin Hilman <khilman@linaro.org>, Tero Kristo <t-kristo@ti.com>,
linux-omap <linux-omap@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH 06/11] ARM: OMAP2+: Fix voltage scaling init for device tree
Date: Mon, 19 May 2014 13:52:18 -0500 [thread overview]
Message-ID: <537A52E2.6080601@ti.com> (raw)
In-Reply-To: <CAGhQ9Vw38vJCS5TGRMz0MMif15narY=9=C8-vwzGuGormhwcYw@mail.gmail.com>
On 05/19/2014 01:48 PM, Joachim Eastwood wrote:
[...]
>> we can add TPS data here for 4460 mpu (panda-ES) if that is
>> interesting to us - given that the common voltage domain/VC/VP stuff
>> so far has gone in no positive direction in our discussions last year.
>
> If this means that voltage scaling and 1.5GHz would work for 4460 it
> would make me very happy :)
> But I assume that would bring lots of more code into mach-omap2 which
> wouldn't be good either. Escaping the old 3.4 kernel would be nice,
> though.
Not really.. we cannot make 1.5GHz work without ABB integration into
the transition sequence[1] - what we can try to do is make basic dvfs
work. the approach we'd be taking (if we introduce tps handlers) is to
do exactly what we did in 3.0/3.4 kernels. I am not too happy with
that. instead, I would prefer we skip dvfs for 4460(which was never
working in upstream) and do it the *right* way - which ever the
upstream maintainers want it to be. that is my personal 2 cents.
[1] last attempt:
http://marc.info/?l=linux-omap&m=139275579731801&w=2 (patch 1-5).
Blocked at:
http://marc.info/?l=linux-arm-kernel&m=139526861215152&w=2
--
Regards,
Nishanth Menon
WARNING: multiple messages have this Message-ID (diff)
From: nm@ti.com (Nishanth Menon)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 06/11] ARM: OMAP2+: Fix voltage scaling init for device tree
Date: Mon, 19 May 2014 13:52:18 -0500 [thread overview]
Message-ID: <537A52E2.6080601@ti.com> (raw)
In-Reply-To: <CAGhQ9Vw38vJCS5TGRMz0MMif15narY=9=C8-vwzGuGormhwcYw@mail.gmail.com>
On 05/19/2014 01:48 PM, Joachim Eastwood wrote:
[...]
>> we can add TPS data here for 4460 mpu (panda-ES) if that is
>> interesting to us - given that the common voltage domain/VC/VP stuff
>> so far has gone in no positive direction in our discussions last year.
>
> If this means that voltage scaling and 1.5GHz would work for 4460 it
> would make me very happy :)
> But I assume that would bring lots of more code into mach-omap2 which
> wouldn't be good either. Escaping the old 3.4 kernel would be nice,
> though.
Not really.. we cannot make 1.5GHz work without ABB integration into
the transition sequence[1] - what we can try to do is make basic dvfs
work. the approach we'd be taking (if we introduce tps handlers) is to
do exactly what we did in 3.0/3.4 kernels. I am not too happy with
that. instead, I would prefer we skip dvfs for 4460(which was never
working in upstream) and do it the *right* way - which ever the
upstream maintainers want it to be. that is my personal 2 cents.
[1] last attempt:
http://marc.info/?l=linux-omap&m=139275579731801&w=2 (patch 1-5).
Blocked at:
http://marc.info/?l=linux-arm-kernel&m=139526861215152&w=2
--
Regards,
Nishanth Menon
next prev parent reply other threads:[~2014-05-19 18:52 UTC|newest]
Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-10 23:47 [PATCH 00/11] Fixes for omap PM for making omap3 DT only Tony Lindgren
2014-04-10 23:47 ` Tony Lindgren
2014-04-10 23:47 ` [PATCH 01/11] ARM: OMAP3: PM: remove access to PRM_VOLTCTRL register Tony Lindgren
2014-04-10 23:47 ` Tony Lindgren
2014-04-10 23:47 ` [PATCH 02/11] ARM: OMAP3: Fix idle mode signaling for sys_clkreq and sys_off_mode Tony Lindgren
2014-04-10 23:47 ` Tony Lindgren
2014-04-12 8:57 ` Tero Kristo
2014-04-12 8:57 ` Tero Kristo
2014-04-12 15:02 ` Tony Lindgren
2014-04-12 15:02 ` Tony Lindgren
2014-04-23 7:51 ` Tero Kristo
2014-04-23 7:51 ` Tero Kristo
2014-04-23 20:49 ` Tony Lindgren
2014-04-23 20:49 ` Tony Lindgren
2014-05-07 16:34 ` Tony Lindgren
2014-05-07 16:34 ` Tony Lindgren
2014-04-14 22:51 ` Grazvydas Ignotas
2014-04-14 22:51 ` Grazvydas Ignotas
2014-04-15 22:56 ` Tony Lindgren
2014-04-15 22:56 ` Tony Lindgren
2014-04-16 13:58 ` Grazvydas Ignotas
2014-04-16 13:58 ` Grazvydas Ignotas
2014-04-18 17:48 ` Tony Lindgren
2014-04-18 17:48 ` Tony Lindgren
2014-04-10 23:47 ` [PATCH 03/11] ARM: OMAP3: Disable broken omap3_set_off_timings function Tony Lindgren
2014-04-10 23:47 ` Tony Lindgren
2014-04-10 23:47 ` [PATCH 04/11] ARM: OMAP3: Fix voltage control for deeper idle states Tony Lindgren
2014-04-10 23:47 ` Tony Lindgren
2014-04-11 15:14 ` Tony Lindgren
2014-04-11 15:14 ` Tony Lindgren
2014-05-07 16:38 ` Tony Lindgren
2014-05-07 16:38 ` Tony Lindgren
2014-04-10 23:47 ` [PATCH 05/11] ARM: dts: Configure omap3 twl4030 I2C4 pins by default Tony Lindgren
2014-04-10 23:47 ` Tony Lindgren
2014-04-10 23:47 ` [PATCH 06/11] ARM: OMAP2+: Fix voltage scaling init for device tree Tony Lindgren
2014-04-10 23:47 ` Tony Lindgren
2014-05-19 17:50 ` Joachim Eastwood
2014-05-19 17:50 ` Joachim Eastwood
2014-05-19 18:01 ` Tony Lindgren
2014-05-19 18:01 ` Tony Lindgren
2014-05-19 18:32 ` Nishanth Menon
2014-05-19 18:32 ` Nishanth Menon
2014-05-19 18:48 ` Joachim Eastwood
2014-05-19 18:48 ` Joachim Eastwood
2014-05-19 18:52 ` Nishanth Menon [this message]
2014-05-19 18:52 ` Nishanth Menon
2014-05-19 20:23 ` Tony Lindgren
2014-05-19 20:23 ` Tony Lindgren
2014-04-10 23:47 ` [PATCH 07/11] ARM: dts: Enable N900 keybaord sleep leds by default Tony Lindgren
2014-04-10 23:47 ` Tony Lindgren
2014-04-11 0:23 ` Tony Lindgren
2014-04-11 0:23 ` Tony Lindgren
2014-04-11 23:31 ` Aaro Koskinen
2014-04-11 23:31 ` Aaro Koskinen
2014-04-23 21:07 ` Tony Lindgren
2014-04-23 21:07 ` Tony Lindgren
2014-04-10 23:47 ` [PATCH 08/11] ARM: dts: Fix omap serial wake-up when booted with device tree Tony Lindgren
2014-04-10 23:47 ` Tony Lindgren
2014-04-10 23:47 ` [PATCH 09/11] ARM: OMAP2+: Enable CPUidle in omap2plus_defconfig Tony Lindgren
2014-04-10 23:47 ` Tony Lindgren
2014-04-10 23:47 ` [PATCH 10/11] mfd: twl-core: Fix idle mode signaling for omaps when booted with device tree Tony Lindgren
2014-04-10 23:47 ` Tony Lindgren
2014-04-17 8:00 ` Lee Jones
2014-04-17 8:00 ` Lee Jones
2014-04-17 15:37 ` Tony Lindgren
2014-04-17 15:37 ` Tony Lindgren
2014-04-23 14:46 ` [GIT PULL] arm: omap: Immutable branch between MFD and ARM OMAP due for the v3.16 merge-window Lee Jones
2014-04-23 14:46 ` Lee Jones
2014-04-23 20:41 ` Tony Lindgren
2014-04-23 20:41 ` Tony Lindgren
2014-04-10 23:47 ` [PATCH 11/11] pinctrl: single: Clear pin interrupts enabled by bootloader Tony Lindgren
2014-04-10 23:47 ` Tony Lindgren
2014-04-22 11:54 ` Linus Walleij
2014-04-22 11:54 ` Linus Walleij
2014-04-22 16:10 ` Tony Lindgren
2014-04-22 16:10 ` Tony Lindgren
2014-04-23 13:57 ` Linus Walleij
2014-04-23 13:57 ` Linus Walleij
2014-04-11 20:47 ` [PATCH 00/11] Fixes for omap PM for making omap3 DT only Sebastian Reichel
2014-04-11 20:47 ` Sebastian Reichel
2014-04-11 21:04 ` Tony Lindgren
2014-04-11 21:04 ` Tony Lindgren
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