On Fri, 25 Jul 2014 11:13:51 +0200 Jiří Prchal <jiri.prc...@aksignal.cz> wrote:
> > > > Every thing seems in place. > > Could you enable CONFIG_DEBUG_PINCTRL and grep on "enable pin" ? > / # dmesg | grep "enable pin" > [ 0.968750] pinctrl-at91 ahb:apb:pinctrl@fffff400: enable pin 101 as GPIO > [ 0.968750] pinctrl-at91 ahb:apb:pinctrl@fffff400: enable pin 101 as PIOD5 > 0x20 > [ 0.968750] pinctrl-at91 ahb:apb:pinctrl@fffff400: enable pin 100 as GPIO > [ 0.968750] pinctrl-at91 ahb:apb:pinctrl@fffff400: enable pin 100 as PIOD4 > 0x10 > [ 1.238281] pinctrl-at91 ahb:apb:pinctrl@fffff400: enable pin 23 as GPIO > [ 1.238281] pinctrl-at91 ahb:apb:pinctrl@fffff400: enable pin 23 as PIOA23 > 0x800000 > [ 1.238281] pinctrl-at91 ahb:apb:pinctrl@fffff400: enable pin 22 as GPIO > [ 1.238281] pinctrl-at91 ahb:apb:pinctrl@fffff400: enable pin 22 as PIOA22 > 0x400000 > [ 1.242187] pinctrl-at91 ahb:apb:pinctrl@fffff400: enable pin 93 as GPIO > [ 1.242187] pinctrl-at91 ahb:apb:pinctrl@fffff400: enable pin 93 as PIOC29 > 0x20000000 > [ 1.246093] pinctrl-at91 ahb:apb:pinctrl@fffff400: enable pin 14 as GPIO > [ 1.246093] pinctrl-at91 ahb:apb:pinctrl@fffff400: enable pin 14 as PIOA14 > 0x4000 Okay, this cleary shows that PA14 pin is muxed as a GPIO (or at least the driver think it is). Could you launch these commands (you'll need the devmem tool) and paste the results ? #devmem 0xfffff408 #devmem 0xfffff418 #devmem 0xfffff438 #devmem 0xfffff43c #devmem 0xfffff458 #devmem 0xfffff468 #devmem 0xfffff470 #devmem 0xfffff474 #devmem 0xfffff498 -- Boris Brezillon, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
