RE: [EXT] I2C_IMX support for i.MX8MP

Shenwei Wang
2022-08-17T14:01:04Z

Hello Richard,

This is not an ML for imx product support. It is for i.MX related Linux development for upstreaming.

Regards
Shenwei

> -----Original Message-----
> From: Richard Leitner <richard.leitner@linux.dev>
> Sent: Wednesday, August 17, 2022 5:39 AM
> To: imx@lists.linux.dev
> Subject: [EXT] I2C_IMX support for i.MX8MP
>
> Caution: EXT Email
>
> Hi list,
>
> Just found out about this imx ML and I'm not sure if it is also intended for
> questions, but I'll give it a try. Please correct me if I'm wrong.
>
> We are currently in the process of creating a BSP for a custom i.MX8MP based
> board which features 3 I2C busses. Unfortunately I'm currently unable to get
> them to live with the i2c-imx or i2c-imxlpi2c drivers.
> Using i2c-gpio (with adapted SW_MUX_CTL and unchanged SW_PAD_CTL)
> works fine.
>
> I'm aware of ERR007805 and tried therefore to configure the busses to 200kHz,
> but I don't get any signals/edges on the pins.
>
> So the basic question for me is (as I was unable to find any trustworthy answers
> on the net) if the i2c-imx driver supports the i.MX8MP at all?
>
> Any feedback is warmly welcome!
>
> regards;rl
>
> P.S. All tests were done with mainline linux 5.19.y.
>
> P.P.S I've also sent this mail to linux-imx@nxp.com before.