Re: [PATCH 0/2] Add support for Infineon Digital eFuse XDP730

[Guenter Roeck]

On 5/19/26 23:40, ashish yadav wrote:
> Hi Guenter,
>
> Thanks for your time and response.
> You are entirely correct that the XDP720 and XDP730 drivers are 99% identical.
> The only functional difference between the two variants lies within
> their GIMON values.
>
> To programmatically identify whether the current target device is an
> XDP720 or an XDP730, the system must query the MFR_MODEL register.
> Because this register is 8 bytes long, it requires an I2C Block Read
> operation to retrieve the model identifier string.
> However, some embedded I2C controllers do not natively support I2C Block Reads.
> It is precisely due to this hardware controller limitation that we
> proposed developing two separate drivers, ensuring reliable
> compatibility across different system architectures.

All you need to do is to add the second compatible to the first driver,
and use driver_data (i2c_device_id) and data (of_device_id) to
distinguish the chips. Many other drivers do just that.

Guenter