topic Re: UART3 can't work in 3.5.7 kernel in i.MX Processors

UART3 can't work in 3.5.7 kernel

kenwu — Tue, 13 May 2014 03:52:05 GMT

I need to use uart3 for my bluetooth module, by default, I can't find /dev/ttymxc2 when system boot up, after look into 3.5.7 kernel and modify device tree structure at ~/arch/arm/boot/dts/imx6qdl-sabreauto.dtsi and ~/arch/arm/boot/dts/imx6q.dtsi, now I have /dev/ttymxc2.

But unfortunately, it can't work.

I want to know if I still miss any modificatioin to enable this UART3, please help, thanks.

PS. my platform is i.MX6 base board with SABRE for automotive infotainment cpu board, uart3 interface is on i.MX6 base board

Thanks in advanced

Ken

Re: UART3 can't work in 3.5.7 kernel

alejandrolozan1 — Tue, 20 May 2014 19:26:53 GMT

Hi Ken,

Can you notify this in the meta-freescale mailing list?

https://lists.yoctoproject.org/listinfo/meta-freescale

Best Regards,

Alejandro

Re: UART3 can't work in 3.5.7 kernel

LeonardoSandova — Tue, 20 May 2014 20:10:37 GMT

Ken, have you tried the same setup on 3.10.17?

Re: UART3 can't work in 3.5.7 kernel

kenwu — Wed, 21 May 2014 00:21:13 GMT

I am sure that 3.10.9 works fine with UART3 (/dev/ttymxc2), we don’t try on 3.10.17.

In this release, it don’t provide 3.10.17.bb.

Ken

Re: UART3 can't work in 3.5.7 kernel

kenwu — Wed, 21 May 2014 00:22:25 GMT

Yes, I can see that, will register now.

Ken