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From: Oliver Graute <oliver.graute@gmail.com>
To: meta-freescale@yoctoproject.org
Subject: imx6ul uart modem lines and the device tree
Date: Thu, 10 Mar 2016 15:04:30 +0100	[thread overview]
Message-ID: <20160310140430.GC19820@graute-opti> (raw)

Hello,

I try to use the GPIO2_IO20 and the GPIO2_IO21 as GPIO pin for uart
modem signals and not as PIN to the USDHC1 sdcard interface of the
imx6ulevk.

if I write 5 direct to the MUX Ctrl Register

devmem2 0x020e01cc w 5
devmem2 0x020e01d0 w 5

it works until next boot.

I assume that I have to change something in the device tree files of
linux to reflect the HW gpio changes. How do I adjust the
imx6ul-14x14-evk-csi.dts for this?

Best Regards,

Oliver


             reply	other threads:[~2016-03-10 14:07 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-10 14:04 Oliver Graute [this message]
2016-03-16 12:05 ` imx6ul uart modem lines and the device tree Oliver Graute
2016-03-16 15:47   ` Fabio Estevam
2016-03-21 10:25     ` Oliver Graute

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