From: Laxman Dewangan <ldewangan@nvidia.com>
To: Mark Brown <broonie@kernel.org>
Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com>,
robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com,
ijc+devicetree@hellion.org.uk, galak@codeaurora.org,
linus.walleij@linaro.org, gnurou@gmail.com, lee.jones@linaro.org,
a.zummo@towertech.it, alexandre.belloni@free-electrons.com,
lgirdwood@gmail.com, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org,
rtc-linux@googlegroups.com, swarren@nvidia.com,
treding@nvidia.com, Mallikarjun Kasoju <mkasoju@nvidia.com>
Subject: Re: [PATCH V2 6/6] regulator: max77620: add regulator driver for max77620/max20024
Date: Wed, 13 Jan 2016 18:07:51 +0530 [thread overview]
Message-ID: <5696451F.3000707@nvidia.com> (raw)
In-Reply-To: <20160113123133.GK6588@sirena.org.uk>
On Wednesday 13 January 2016 06:01 PM, Mark Brown wrote:
> * PGP Signed by an unknown key
>
> On Wed, Jan 13, 2016 at 05:35:33PM +0530, Laxman Dewangan wrote:
>> On Wednesday 13 January 2016 05:27 PM, Mark Brown wrote:
>> This is require to
>> - configure FPS_SRC based on platform data for each rail,
>> - If FPS_SRC enabled then enable it always.
>> - If FPS_SRC is disabled (NONE) then based on init data constraint,
>> set it to desired state.
> What is FPS_SRC and why is it set from init_data? A driver should never
> be looking at init_data.
FPS: Flexible Power Sequence.
Max77620 has three FPS source configuration FPS0,1 2 and can be
configured with different digital input signals EN0, EN1 and EN2.
Then rails and few GPIOs can configured with these FPS SRC with
different slots so that it can be controlled externally.
When FPS_SRC is set to NONE (this is needed from platform data) then
based on constraint like boot enable/always enable, it need to be on
desired state. Otherwise we may endup with disabling the rail when
setting to NONE and create issue.
I need to set the FPS src properly for each rails before callback happen
from regulator init so that enable/disable/is_enable can handle it properly.
>> - Power mode and slew rate init based on default configuration from the
>> register if platform does not want to set it.
> Same here, why is init_data needed here?
>
Here, init data is not needed. I was thinking to configure slew rate in
preinit but can be done later also through regulator->ops.
But I will need the driver specific DT data (customized flag) to
configure the PMIC like slots.
next prev parent reply other threads:[~2016-01-13 12:48 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-12 9:17 [PATCH V2 0/6] Add support for MAXIM MAX77620/MAX20024 PMIC Laxman Dewangan
2016-01-12 9:17 ` [PATCH V2 1/6] DT: mfd: add device-tree binding doc fro PMIC max77620/max20024 Laxman Dewangan
[not found] ` <1452590273-16421-2-git-send-email-ldewangan-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2016-01-13 2:07 ` Rob Herring
2016-01-12 9:17 ` [PATCH V2 2/6] mfd: max77620: add core driver for MAX77620/MAX20024 Laxman Dewangan
2016-01-13 0:47 ` Krzysztof Kozlowski
2016-01-13 9:00 ` Laxman Dewangan
2016-01-13 10:11 ` Alexandre Belloni
2016-01-12 9:17 ` [PATCH V2 3/6] pinctrl: max77620: add pincontrol " Laxman Dewangan
2016-01-12 9:17 ` [PATCH V2 4/6] gpio: max77620: add gpio " Laxman Dewangan
2016-01-12 9:17 ` [PATCH V2 5/6] rtc: max77xxx: add RTC driver for Maxim MAX77xxx series RTC IP Laxman Dewangan
2016-01-13 0:06 ` Krzysztof Kozlowski
2016-01-13 4:07 ` Laxman Dewangan
2016-01-13 4:28 ` Krzysztof Kozlowski
2016-01-13 4:25 ` Laxman Dewangan
[not found] ` <5695D1AF.9000806-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2016-01-13 14:59 ` Laxman Dewangan
2016-01-14 0:50 ` Krzysztof Kozlowski
[not found] ` <5696F0C4.1060904-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
2016-01-14 1:20 ` Krzysztof Kozlowski
2016-01-14 11:50 ` Laxman Dewangan
2016-01-15 1:50 ` Javier Martinez Canillas
2016-01-18 4:27 ` Krzysztof Kozlowski
2016-01-18 12:01 ` Laxman Dewangan
2016-01-18 12:52 ` Javier Martinez Canillas
2016-01-14 14:20 ` Mark Brown
2016-01-18 4:23 ` Krzysztof Kozlowski
2016-01-12 9:17 ` [PATCH V2 6/6] regulator: max77620: add regulator driver for max77620/max20024 Laxman Dewangan
2016-01-13 1:28 ` Krzysztof Kozlowski
2016-01-13 11:39 ` Laxman Dewangan
2016-01-13 11:57 ` Mark Brown
2016-01-13 12:05 ` Laxman Dewangan
2016-01-13 12:31 ` Mark Brown
2016-01-13 12:37 ` Laxman Dewangan [this message]
2016-01-13 13:09 ` Mark Brown
2016-01-13 13:11 ` Laxman Dewangan
[not found] ` <56964CEF.3030900-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2016-01-13 14:20 ` Mark Brown
2016-01-13 14:42 ` Laxman Dewangan
[not found] ` <56966242.4080601-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2016-01-13 15:51 ` Mark Brown
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