From mboxrd@z Thu Jan  1 00:00:00 1970
From: jiri.prchal@aksignal.cz (=?UTF-8?B?SmnFmcOtIFByY2hhbA==?=)
Date: Fri, 25 Jul 2014 12:06:30 +0200
Subject: [PATCH] ARM: at91: at91sam9x5: sets NPCS0 (PA14) back to GPIO
In-Reply-To: <20140725113110.70c4aa41@bbrezillon>
References: <1405074175-22444-1-git-send-email-voice.shen@atmel.com>	<53D10C50.50305@aksignal.cz>	<20140724162645.4e19c26c@bbrezillon>	<53D12103.3020103@aksignal.cz>	<20140724175848.44f5da10@bbrezillon>	<53D1F5D0.1080006@aksignal.cz>	<20140725095319.16a8465c@bbrezillon>	<53D214E1.4050105@aksignal.cz>	<20140725104553.403921b1@bbrezillon>	<53D21B3F.7060006@aksignal.cz>	<20140725110124.3f0dce6c@bbrezillon>	<53D21FCF.7010402@aksignal.cz>
 <20140725113110.70c4aa41@bbrezillon>
Message-ID: <53D22C26.4030208@aksignal.cz>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org



Dne 25.7.2014 v 11:31 Boris BREZILLON napsal(a):
> On Fri, 25 Jul 2014 11:13:51 +0200
> Ji?? Prchal <jiri.prchal@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 at fffff400: enable pin 101 as GPIO
>> [    0.968750] pinctrl-at91 ahb:apb:pinctrl at fffff400: enable pin 101 as PIOD5 0x20
>> [    0.968750] pinctrl-at91 ahb:apb:pinctrl at fffff400: enable pin 100 as GPIO
>> [    0.968750] pinctrl-at91 ahb:apb:pinctrl at fffff400: enable pin 100 as PIOD4 0x10
>> [    1.238281] pinctrl-at91 ahb:apb:pinctrl at fffff400: enable pin 23 as GPIO
>> [    1.238281] pinctrl-at91 ahb:apb:pinctrl at fffff400: enable pin 23 as PIOA23 0x800000
>> [    1.238281] pinctrl-at91 ahb:apb:pinctrl at fffff400: enable pin 22 as GPIO
>> [    1.238281] pinctrl-at91 ahb:apb:pinctrl at fffff400: enable pin 22 as PIOA22 0x400000
>> [    1.242187] pinctrl-at91 ahb:apb:pinctrl at fffff400: enable pin 93 as GPIO
>> [    1.242187] pinctrl-at91 ahb:apb:pinctrl at fffff400: enable pin 93 as PIOC29 0x20000000
>> [    1.246093] pinctrl-at91 ahb:apb:pinctrl at fffff400: enable pin 14 as GPIO
>> [    1.246093] pinctrl-at91 ahb:apb:pinctrl at 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
>
/ # devmem 0xfffff408
0xF0E04018
/ # devmem 0xfffff418
0xE0C04000
/ # devmem 0xfffff438
0x00C04000
/ # devmem 0xfffff43c
0x13FFD7FB
/ # devmem 0xfffff458
0x00000000
/ # devmem 0xfffff468
0xFF223B4E
/ # devmem 0xfffff470
0x0F000000
/ # devmem 0xfffff474
0x00000000
/ # devmem 0xfffff498
0xFFFFFFFF

I get thought if is possible that in time of probe fm25 (it's first) is not configured PA14 (it 's last)?