On 6/12/21 7:52 AM, Joe Hung (洪銘陽) wrote:

Hi Marek,

Hi,

I'm the committer of "ilitek_ts_i2c.c" driver.
The so-called "Lego" series was listed below, as listed in ilitek_ts_i2c.yaml
It's the newer series with different protocol and control flow to ILITEK IC FW.

- ilitek,ili2130
- ilitek,ili2131
- ilitek,ili2132
- ilitek,ili2316
- ilitek,ili2322
- ilitek,ili2323
- ilitek,ili2326
- ilitek,ili2520
- ilitek,ili2521

quoted

The older driver also supports 251x . What exactly is "Lego" series ?

More specifically, Lego series support "252x", not "2510".
The older driver support 210x and 251x, which has older protocol.

quoted

In fact, is there documentation for the different ILI2xxx touchscreen controllers ? So far, all the information I had was pulled from the various forks of downstream example code.

If it need for a doc. to distinguish it, I am glad to support/arrange, and where should I put those description to ?

I think the older ili251x has protocol V5 and the lego series has 
protocol V6 or something like that, right ? If that's the case, maybe it 
would be useful to clarify that and that the protocols are incompatible, 
so others don't get confused by those two drivers.