Hi All, I am unable to find gpio support in directory "/sys/class/gpio". My kernel version is as follows: [root@FriendlyARM /]# uname -a Linux FriendlyARM 2.6.32.2-FriendlyARM #1 Fri Mar 4 17:48:51 CST 2011 armv4tl unknown Eagerly waiting 4 reply. Thank you
That is because it is not enabled in that kernel. Tick the right box in menuconfig and re-compile the kernel. Do you know to learn how to do that or just get a kernel with it already functional?
know = want! Do you want to learn how to do that or do you just want to get a kernel with GPIO already enabled?
Dave, If you could post which items in the Kernel need to be enabled, I would greatly appreciate it. I'm using a Mini6410, if there is something specific to that board that enables GPIO support. I saw a number of options in menuconfig, but not sure which ones to enable. Thanks in advance
For the mini2440 go to: http://www.pengutronix.com/oselas/bsp/pengutronix/mini2440_bsp_de.html and get this file OSELAS.BSP-Pengutronix-Mini2440-2012.12.0.tgz extract it and look around for a file I think in configs and either the 64M or 128M file and search for "gpio". Perhaps reading through OSELAS.BSP-Pengutronix-Mini2440-Quickstart.pdf might help you on the way. Also, there is similar information for your platform here: http://www.pengutronix.com/oselas/bsp/pengutronix/mini6410_bsp_en.html Good luck!