Re: [PATCH] i2c: I2C_HISI should depend on ARCH_HISI && ACPI

Yicong Yang
2021-04-15T09:04:51Z

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
>>
>
>
> .
>