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From: Yicong Yang <yangyicong@hisilicon.com>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>,
	Wei Xu <xuwei5@hisilicon.com>,
	Wolfram Sang <wsa+renesas@sang-engineering.com>,
	"Andy Shevchenko" <andriy.shevchenko@linux.intel.com>,
	Dmitry Osipenko <digetx@gmail.com>,
	Linux I2C <linux-i2c@vger.kernel.org>,
	Linux ARM <linux-arm-kernel@lists.infradead.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Linuxarm <linuxarm@huawei.com>
Subject: Re: [PATCH] i2c: I2C_HISI should depend on ARCH_HISI && ACPI
Date: Thu, 15 Apr 2021 17:04:39 +0800
Message-ID: <39f6bbed-9eea-963a-1ef1-a83248f162aa@hisilicon.com> (raw)
In-Reply-To: <21d833f0-b1b8-9732-21c7-3a73676e07d3@hisilicon.com>

On 2021/4/15 16:18, Yicong Yang wrote:
> On 2021/4/15 2:06, Geert Uytterhoeven wrote:
>> Hi Yicong,
>>
>> On Wed, Apr 14, 2021 at 11:24 AM Yicong Yang <yangyicong@hisilicon.com> wrote:
>>> On 2021/4/13 20:26, Geert Uytterhoeven wrote:
>>>> The HiSilicon Kunpeng I2C controller is only present on HiSilicon
>>>> Kunpeng SoCs, and its driver relies on ACPI to probe for its presence.
>>>> Hence add dependencies on ARCH_HISI and ACPI, to prevent asking the user
>>>> about this driver when configuring a kernel without Hisilicon platform
>>>> or ACPI firmware support.
>>>
>>> this is a public IP which doesn't specifically depend on ARCH_HISI. I'm
>>> not sure all the platform this IP on has ARCH_HISI configured. The driver
>>> will not be compiled by default config. This is not correct to have
>>> this dependence.
>>
>> Thanks for your answer!
>>
>> I guess it's still fine to add a dependency on ACPI?
> 
> yes. currently we only use this driver through ACPI. So at least
> for this driver, it make sense to keep the dependency.
> 

sorry. i was a little mess about this. I dropped this in [1].
so just keep it as is.

[1] https://lore.kernel.org/linux-i2c/YGMntYT2iz72wgrd@smile.fi.intel.com/

>>
>> Thanks again!
>>
>>>> Fixes: d62fbdb99a85730a ("i2c: add support for HiSilicon I2C controller")
>>>> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
>>>> ---
>>>>  drivers/i2c/busses/Kconfig | 2 +-
>>>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>>>
>>>> diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
>>>> index b5b4e0d0ff4dd0bc..3ead6d9e130b2ebc 100644
>>>> --- a/drivers/i2c/busses/Kconfig
>>>> +++ b/drivers/i2c/busses/Kconfig
>>>> @@ -647,7 +647,7 @@ config I2C_HIGHLANDER
>>>>
>>>>  config I2C_HISI
>>>>       tristate "HiSilicon I2C controller"
>>>> -     depends on ARM64 || COMPILE_TEST
>>>> +     depends on (ARM64 && ARCH_HISI && ACPI) || COMPILE_TEST
>>>>       help
>>>>         Say Y here if you want to have Hisilicon I2C controller support
>>>>         available on the Kunpeng Server.
>> \
>> Gr{oetje,eeting}s,
>>
>>                         Geert
>>
> 
> 
> .
> 


  reply index

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-13 12:26 Geert Uytterhoeven
2021-04-13 12:36 ` Andy Shevchenko
2021-04-13 12:48   ` Geert Uytterhoeven
2021-04-13 14:41     ` Andy Shevchenko
2021-04-13 14:44       ` Geert Uytterhoeven
2021-04-13 15:19         ` Andy Shevchenko
2021-04-14  9:19 ` Yicong Yang
2021-04-14 18:06   ` Geert Uytterhoeven
2021-04-14 18:18     ` Andy Shevchenko
2021-04-14 18:55       ` Geert Uytterhoeven
2021-04-14 19:14         ` Andy Shevchenko
2021-04-14 19:21           ` Geert Uytterhoeven
2021-04-15  8:50             ` Andy Shevchenko
2021-04-19 13:02               ` Geert Uytterhoeven
2021-04-19 13:31                 ` Andy Shevchenko
2021-04-19 13:54                   ` Geert Uytterhoeven
2021-04-19 13:58                     ` Andy Shevchenko
2021-04-19 14:14                       ` Andy Shevchenko
2021-04-19 14:18                         ` Geert Uytterhoeven
2021-04-19 14:27                           ` Andy Shevchenko
2021-04-19 14:15                       ` Geert Uytterhoeven
2021-04-19 14:39                         ` Andy Shevchenko
2021-04-15  8:18     ` Yicong Yang
2021-04-15  9:04       ` Yicong Yang [this message]
2021-04-15 10:36         ` Andy Shevchenko

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