linux-kernel - Re: [PATCH 2/9] ARM: multi_v7_defconfig: Enable max77802 regulator, rtc and clock drivers

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Message-ID: <CAOesGMjBgbsPZujB=kQgv-pUuFs3Qvufz1_1TsDVA0dYzs1Cdw@mail.gmail.com>
Date:	Fri, 17 Jul 2015 11:49:13 -0700
From:	Olof Johansson <olof@...om.net>
To:	Javier Martinez Canillas <javier@...hile0.org>
Cc:	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	"arm@...nel.org" <arm@...nel.org>, Arnd Bergmann <arnd@...db.de>,
	Kevin Hilman <khilman@...aro.org>,
	Doug Anderson <dianders@...omium.org>,
	Kukjin Kim <kgene@...nel.org>,
	"linux-samsung-soc@...r.kernel.org" 
	<linux-samsung-soc@...r.kernel.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/9] ARM: multi_v7_defconfig: Enable max77802 regulator,
 rtc and clock drivers

Hi,


On Fri, Jul 17, 2015 at 11:47 AM, Javier Martinez Canillas
<javier@...hile0.org> wrote:
> Hello Olof,
>
> On Fri, Jul 17, 2015 at 6:49 PM, Olof Johansson <olof@...om.net> wrote:
>> On Thu, Jul 16, 2015 at 09:42:47AM +0900, Krzysztof Kozlowski wrote:
>>> On 16.07.2015 00:38, Javier Martinez Canillas wrote:
>>> > Hello,
>>> >
>>> > On Thu, May 14, 2015 at 5:40 PM, Javier Martinez Canillas
>>> > <javier.martinez@...labora.co.uk> wrote:
>>> >> The Maxim max77802 Power Management IC is used on many Exynos machines.
>>> >> Besides a bunch of regulators, this chip has a Real-Time-Clock (RTC)
>>> >> and 2-channel 32kHz clock outputs.
>>> >>
>>> >> Enable the kernel config options to have the drivers for these devices
>>> >> built as a module.
>>> >>
>>> >> Signed-off-by: Javier Martinez Canillas <javier.martinez@...labora.co.uk>
>>> >> ---
>>> >>  arch/arm/configs/multi_v7_defconfig | 3 +++
>>> >>  1 file changed, 3 insertions(+)
>>> >>
>>> >> diff --git a/arch/arm/configs/multi_v7_defconfig b/arch/arm/configs/multi_v7_defconfig
>>> >> index 2349584b6e08..080120fe5580 100644
>>> >> --- a/arch/arm/configs/multi_v7_defconfig
>>> >> +++ b/arch/arm/configs/multi_v7_defconfig
>>> >> @@ -373,6 +373,7 @@ CONFIG_POWER_RESET_SYSCON=y
>>> >>  CONFIG_REGULATOR_MAX8907=y
>>> >>  CONFIG_REGULATOR_MAX8973=y
>>> >>  CONFIG_REGULATOR_MAX77686=y
>>> >> +CONFIG_REGULATOR_MAX77802=m
>>> >
>>> > I noticed that the version that landed in 4.2-rc1 as commit
>>> > f3caa529c6f5 ("ARM: multi_v7_defconfig: Enable max77802 regulator, rtc
>>> > and clock drivers") doesn't include this symbol. I guess it was caused
>>> > by a wrong resolved conflict? I'll post a patch to enable the
>>> > regulator again.
>>>
>>> As you can see in mentioned mainline commit Kukjin removed it manually:
>>> [kgene@...nel.org: removing useless REGULATOR_MAX77802 config]
>>>
>>> I wonder why?
>>
>> Seems odd. exynos_defconfig still enables it.
>>
>
> Yeah since it is needed for at least the Exynos5420 Peach Pit and
> Exynos5800 Peach Pi Chromebooks that use this PMIC.
>
>> Javier or Krzysztof, please send an incremental fix to enable and I'll pick
>> it up as a fix.
>>
>
> I already posted an incremental patch [0] and Krzysztof is pushing it
> through Kukjin for 4.3 [1].
>
> I guess that's OK and there is no need to add it as a fix for the 4.2
> -rc cycle since this is not really a regression. I mean, the max77802
> regulator driver was never enabled for multi_v7_defconfig before.

Yeah, I came across those emails a little further down. :-) It's all
good, we'll see it come in later.


-Olof
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