Add I2C bus recovery support on Kunpeng 920/930

[PATCH 0/2] Add I2C bus recovery support on Kunpeng 920/930

Posted by Yicong Yang 4 years, 5 months ago

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(-)

-- 
2.24.0

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

Posted by Yicong Yang 4 years, 4 months ago

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(-)
>

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

Posted by Andy Shevchenko 4 years, 4 months ago

On Mon, Feb 07, 2022 at 03:37:17PM +0800, Yicong Yang wrote:
> a friendly ping ...
> 
> Hi Designware maintainers and Wolfram, any comments for this?

Answered, sorry for the delay.

-- 
With Best Regards,
Andy Shevchenko