[v1] i2c: tegra: Add Tegra256 I2C controller support

[PATCH RESEND 0/2] i2c: tegra: Add Tegra256 I2C controller support

Posted by Akhil R 1 month, 2 weeks ago

This series adds support for Tegra256 I2C controllers to the Tegra I2C driver.

Tegra256 consists of 8 generic I2C controllers similar to previous Tegra generations,
but with a different parent clock frequency requiring adjusted timing parameters.

The changes add the "nvidia,tegra256-i2c" compatible string to device tree bindings
and implement the corresponding hardware feature structure with appropriate timing
parameters and clock divisors.

Akhil R (2):
  dt-bindings: i2c: nvidia,tegra20-i2c: Add Tegra256 I2C
  i2c: tegra: Add Tegra256 support

 .../bindings/i2c/nvidia,tegra20-i2c.yaml      |  6 +++++
 drivers/i2c/busses/i2c-tegra.c                | 26 +++++++++++++++++++
 2 files changed, 32 insertions(+)

-- 
2.50.1

Re: [PATCH RESEND 0/2] i2c: tegra: Add Tegra256 I2C controller support

Posted by Thierry Reding 3 weeks, 3 days ago

On Mon, Aug 18, 2025 at 10:03:43AM +0530, Akhil R wrote:
> This series adds support for Tegra256 I2C controllers to the Tegra I2C driver.
> 
> Tegra256 consists of 8 generic I2C controllers similar to previous Tegra generations,
> but with a different parent clock frequency requiring adjusted timing parameters.
> 
> The changes add the "nvidia,tegra256-i2c" compatible string to device tree bindings
> and implement the corresponding hardware feature structure with appropriate timing
> parameters and clock divisors.
> 
> Akhil R (2):
>   dt-bindings: i2c: nvidia,tegra20-i2c: Add Tegra256 I2C
>   i2c: tegra: Add Tegra256 support
> 
>  .../bindings/i2c/nvidia,tegra20-i2c.yaml      |  6 +++++
>  drivers/i2c/busses/i2c-tegra.c                | 26 +++++++++++++++++++
>  2 files changed, 32 insertions(+)

Hi Andi, Wolfram,

Do you want me to pick up the DT bindings patch? There's currently no DT
files that require this, so taking both through the I2C tree is fine,
but either way works for me.

Thanks,
Thierry

Re: [PATCH RESEND 0/2] i2c: tegra: Add Tegra256 I2C controller support

Posted by Wolfram Sang 3 weeks, 3 days ago

> Do you want me to pick up the DT bindings patch? There's currently no DT
> files that require this, so taking both through the I2C tree is fine,
> but either way works for me.

Agreed, this should be I2C material.

[PATCH RESEND 0/2] i2c: tegra: Add Tegra256 I2C controller support

Posted by Akhil R 1 month ago

On Mon, 18 Aug 2025 10:03:43 +0530, Akhil R wrote:

> This series adds support for Tegra256 I2C controllers to the Tegra I2C driver.
>
> Tegra256 consists of 8 generic I2C controllers similar to previous Tegra generations,
> but with a different parent clock frequency requiring adjusted timing parameters.
>
> The changes add the "nvidia,tegra256-i2c" compatible string to device tree bindings
> and implement the corresponding hardware feature structure with appropriate timing
> parameters and clock divisors.
>
> Akhil R (2):
>   dt-bindings: i2c: nvidia,tegra20-i2c: Add Tegra256 I2C
>   i2c: tegra: Add Tegra256 support
>
>  .../bindings/i2c/nvidia,tegra20-i2c.yaml      |  6 +++++
>  drivers/i2c/busses/i2c-tegra.c                | 26 +++++++++++++++++++
>  2 files changed, 32 insertions(+)

Hi Andi,

Did you get a chance to check this patchset, do you see any concerns?

Thanks & Regards,
Akhil