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>
