Re: [PATCH v4] i2c: Add FTDI FT4222H USB I2C adapter

[Francesco Lavra]

Friendly ping

On Wed, 2026-02-25 at 12:20 +0100, Francesco Lavra wrote:
> FT4222H exports a USB interface to operate as I2C bus master when set up
> (via the DCNF pins) in configuration mode 0 or 3.
> The USB communication protocol implemented by the FT4222 chip is not
> publicly documented, therefore the name assigned to the various defines
> used in the USB communication code is a semi-educated guess after
> sniffing
> USB traffic generated with the FTDI FT4222 userspace library.
> 
> Signed-off-by: Francesco Lavra <flavra@xxxxxxxxxxxx>