linux-kernel - Re: [PATCH 0/2] Add I2C bus recovery support on Kunpeng 920/930

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Message-ID: <0db7b7ab-a640-b8c3-33cc-29731a65227b@huawei.com>
Date:   Mon, 7 Feb 2022 15:37:17 +0800
From:   Yicong Yang <yangyicong@...wei.com>
To:     Yicong Yang <yangyicong@...ilicon.com>,
        <jarkko.nikula@...ux.intel.com>,
        <andriy.shevchenko@...ux.intel.com>,
        <mika.westerberg@...ux.intel.com>, <wsa@...nel.org>,
        <linux-i2c@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     <prime.zeng@...ilicon.com>, <linuxarm@...wei.com>
Subject: Re: [PATCH 0/2] Add I2C bus recovery support on Kunpeng 920/930

a friendly ping ...

Hi Designware maintainers and Wolfram, any comments for this?

thanks.

On 2022/1/25 20:49, Yicong Yang wrote:
> This series adds the I2C bus recovery support on Kunpeng 920/930.
> We're using HiSilicon I2C controller on Kunpeng 930 and Designware
> I2C controller on Kunpeng 920. For both platform, the SCL/SDA pins
> are multiplexed with GPIOs. Both driver use generic GPIO recovery
> method and we need to switch the pin mutiplexing before/after the
> recovery process. We use ACPI method to help on the pin mux switching
> which is also introduced in this series.
> 
> Yicong Yang (2):
>   i2c: hisi: Add generic GPIO bus recovery support
>   i2c: designware: Add ACPI assisted recovery support
> 
>  drivers/i2c/busses/i2c-designware-core.h    |  2 +
>  drivers/i2c/busses/i2c-designware-master.c  | 84 ++++++++++++++++++++-
>  drivers/i2c/busses/i2c-designware-platdrv.c |  6 +-
>  drivers/i2c/busses/i2c-hisi.c               | 78 +++++++++++++++++++
>  4 files changed, 164 insertions(+), 6 deletions(-)
>