topic Re: mx23 SPI with 3.x kernel in i.MX Processors

mx23 SPI with 3.x kernel

Tavish — Sat, 30 Mar 2013 12:01:29 GMT

Hi,

I have an ili9326 based LCD+ads7843 SPI touchscreen. I could get the touchscreen to work with

2.6.35 kernel; but not the SPI touchscreen controller. Is SPI on SSP2 working with 2.6.35 kernel,

or do I need 3.x kernel for that? I ask because 3.x doesn't have lcdif.c/h interface and I cannot figure

out how to integrate the driver I was using with 2.6.35 kernel in 3.7.

Thanks!

OtavioSalvador — Sat, 30 Mar 2013 15:04:19 GMT

No; SPI is broken in 2.6.35 for i.MX23. If you fix it please send us the fix :-) 2.6.31 is the last known to work from FSL kernels.

We've included the touchscreen support for i.MX28 (backported from 3.9) onto 3.8 at Freescale/linux-mainline · GitHub; you may want to give it a try.

fabio_estevam — Sat, 30 Mar 2013 19:29:21 GMT

LCD controller is supported on kernel 3.8.5 for mx28evk and mx23evk.

You can give it a try.

Tavish — Mon, 01 Apr 2013 06:22:49 GMT

Thanks Otavio, will take a look at that.

@Fabio LCD interface is is supported, but only in dotclock mode right now :smileysad:

In 2.6.35, all modes are supported. I will try to stick with 2.6.35 I think.