Re: [PATCH 1/5] i2c: core: Pick i2c bus number from ACPI if present

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Hi, Mika,

On Thu, Sep 22, 2022 at 8:23 PM Mika Westerberg
<mika.westerberg@xxxxxxxxxxxxxxx> wrote:
>
> Hi,
>
> On Thu, Sep 22, 2022 at 07:39:54PM +0800, Binbin Zhou wrote:
> > Under LoongARCH based on ACPI(such as Loongson-3A + LS7A), the ls2x i2c
> > driver obtains the i2c bus number from ACPI table.
>
> Why this is needed? The I2CSerialBusV2() resource should be enough to
> identify the adapter, and I don't see why static number would be needed
> for anything?
>
In later patches we will add LS7A i2c driver, this driver is shared by
MIPS-based Loongson-3A4000 system (use FDT) and LoongArch-based
Loongson-3A5000 system (use ACPI).

FDT systems support static bus numbers, so we want to do the same
thing on ACPI systems. I think keep this consistency can make user
feel better


Huacai



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