From mboxrd@z Thu Jan 1 00:00:00 1970 From: jiri.prchal@aksignal.cz (=?UTF-8?B?SmnFmcOtIFByY2hhbA==?=) Date: Fri, 25 Jul 2014 11:13:51 +0200 Subject: [PATCH] ARM: at91: at91sam9x5: sets NPCS0 (PA14) back to GPIO In-Reply-To: <20140725110124.3f0dce6c@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> Message-ID: <53D21FCF.7010402@aksignal.cz> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Dne 25.7.2014 v 11:01 Boris BREZILLON napsal(a): > On Fri, 25 Jul 2014 10:54:23 +0200 > Ji?? Prchal wrote: > >> Here it is: >> cat /sys/kernel/debug/gpio >> GPIOs 0-31, platform/fffff400.gpio, fffff400.gpio: >> [in20] GPIOfffff400.gpio3: [gpio] set >> [spi0.3] GPIOfffff400.gpio14: [gpio] set >> [in19] GPIOfffff400.gpio21: [gpio] set >> [spi0.1] GPIOfffff400.gpio22: [gpio] set >> [spi0.0] GPIOfffff400.gpio23: [gpio] set >> [in18] GPIOfffff400.gpio28: [gpio] set >> [out20] GPIOfffff400.gpio29: [gpio] clear >> [out18] GPIOfffff400.gpio30: [gpio] clear >> [out19] GPIOfffff400.gpio31: [gpio] clear >> >> GPIOs 32-50, platform/fffff600.gpio, fffff600.gpio: >> [blue] GPIOfffff600.gpio12: [gpio] set >> [gsm_on] GPIOfffff600.gpio13: [gpio] clear >> [yellow] GPIOfffff600.gpio14: [gpio] clear >> [gsm_rst] GPIOfffff600.gpio15: [gpio] clear >> [green] GPIOfffff600.gpio16: [gpio] clear >> [red] GPIOfffff600.gpio18: [gpio] clear >> >> GPIOs 64-95, platform/fffff800.gpio, fffff800.gpio: >> [in17] GPIOfffff800.gpio16: [gpio] set >> [in13] GPIOfffff800.gpio18: [gpio] set >> [in14] GPIOfffff800.gpio20: [gpio] set >> [por] GPIOfffff800.gpio25: [gpio] clear >> [out16] GPIOfffff800.gpio26: [gpio] clear >> [out15] GPIOfffff800.gpio28: [gpio] clear >> [spi0.2] GPIOfffff800.gpio29: [gpio] set >> [out17] GPIOfffff800.gpio30: [gpio] clear >> >> GPIOs 96-117, platform/fffffa00.gpio, fffffa00.gpio: >> [nand_enable] GPIOfffffa00.gpio4: [gpio] set >> [nand_rdy] GPIOfffffa00.gpio5: [gpio] set >> [atmel_usba_udc] GPIOfffffa00.gpio21: [gpio] clear >> > > 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 [ 1.652343] pinctrl-at91 ahb:apb:pinctrl at fffff400: enable pin 117 as GPIO [ 1.652343] pinctrl-at91 ahb:apb:pinctrl at fffff400: enable pin 117 as PIOD21 0x200000 [ 1.742187] pinctrl-at91 ahb:apb:pinctrl at fffff400: enable pin 50 as GPIO [ 1.742187] pinctrl-at91 ahb:apb:pinctrl at fffff400: enable pin 50 as PIOB18 0x40000 [ 1.742187] pinctrl-at91 ahb:apb:pinctrl at fffff400: enable pin 48 as GPIO [ 1.742187] pinctrl-at91 ahb:apb:pinctrl at fffff400: enable pin 48 as PIOB16 0x10000 [ 1.746093] pinctrl-at91 ahb:apb:pinctrl at fffff400: enable pin 46 as GPIO [ 1.746093] pinctrl-at91 ahb:apb:pinctrl at fffff400: enable pin 46 as PIOB14 0x4000 [ 1.746093] pinctrl-at91 ahb:apb:pinctrl at fffff400: enable pin 44 as GPIO [ 1.746093] pinctrl-at91 ahb:apb:pinctrl at fffff400: enable pin 44 as PIOB12 0x1000 > >> >> Dne 25.7.2014 v 10:45 Boris BREZILLON napsal(a): >>> On Fri, 25 Jul 2014 10:27:13 +0200 >>> Ji?? Prchal wrote: >>> >>> [...] >>>> >>>> >>>>> Could you also paste the content of /sys/kernel/debug/gpio ? >>>> The /sys/kernel/debug/ is empty. >>> >>> You have to enable CONFIG_DEBUG_FS in your config and then mount the >>> debug file system: >>> >>> #mount -t debugfs dbg /sys/kernel/debug >>> >>> >>> >>> > > >