Re: [PATCH v7 6/6] i2c: designware: Add doorbell support for Mendocino

[Jarkko Nikula]

On 3/30/23 01:07, Mario Limonciello wrote:
> Mendocino and later platform don't use the platform feature mailbox for
> communication for I2C arbitration, they rely upon ringing a doorbell.
>
> Detect the platform by the device ID of the root port and choose the
> appropriate method.
>
> Link: https://lore.kernel.org/linux-i2c/20220916131854.687371-3-jsd@xxxxxxxxxxxx/
> Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxx>
> ---
> v6->v7:
>   * Add missing pci_dev_put()
>   * s/mendocino/doorbell/
> v5->v6:
>   * Handle Mendocino busy code like Cezanne
> v4->v5:
>   * Poll for busy
>   * Rename to mendocino
>   * Add explicit dependency on PCI
> v3->v4:
>   * Adjust to use PCI device ID and function pointers instead
> v2->v3:
>   * Use CPU ID rather than ACPI ID, this will be pushed to a later patch
> v1->v2:
>   * New patch
> ---
>   drivers/i2c/busses/Kconfig                 |  1 +
>   drivers/i2c/busses/i2c-designware-amdpsp.c | 26 +++++++++++++++++++++-
>   2 files changed, 26 insertions(+), 1 deletion(-)
Acked-by: Jarkko Nikula <jarkko.nikula@xxxxxxxxxxxxxxx>