# Re: \[PATCH\] dt-bindings: input: touchscreen: ilitek\_ts\_i2c: Absorb ili2xxx bindings

- From: Marek Vasut \<marex@denx.de\>
- Date: 2021-06-13 19:43:15 
- List: linux-input
- Page: https://ratatoskr.run/linux-input/2021/06/8192032
- Thread: https://ratatoskr.run/linux-input/2021/06/8191992/t.md

```text
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
>
>> 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.
>
>> 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.
```