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

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To: Binbin Zhou <zhoubinbin@xxxxxxxxxxx>
Subject: Re: [PATCH 1/5] i2c: core: Pick i2c bus number from ACPI if present
From: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
Date: Thu, 22 Sep 2022 15:23:30 +0300
Cc: Wolfram Sang <wsa@xxxxxxxxxx>, Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>, linux-i2c@xxxxxxxxxxxxxxx, loongarch@xxxxxxxxxxxxxxx, linux-acpi@xxxxxxxxxxxxxxx, WANG Xuerui <kernel@xxxxxxxxxx>, Jianmin Lv <lvjianmin@xxxxxxxxxxx>, Huacai Chen <chenhuacai@xxxxxxxxxxx>
In-reply-to: <be5cd69c7c58d44ca119d4ca692d95a2ae924533.1663835855.git.zhoubinbin@loongson.cn>
References: <cover.1663835855.git.zhoubinbin@loongson.cn> <be5cd69c7c58d44ca119d4ca692d95a2ae924533.1663835855.git.zhoubinbin@loongson.cn>

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?

Follow-Ups:
- Re: [PATCH 1/5] i2c: core: Pick i2c bus number from ACPI if present
  - From: Huacai Chen

References:
- [PATCH 0/5] i2c: ls2x: Add support for the Loongson-2K/LS7A I2C
  - From: Binbin Zhou
- [PATCH 1/5] i2c: core: Pick i2c bus number from ACPI if present
  - From: Binbin Zhou

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