[MinnowBoard] Echo to MinnowBoardMax GPIO export fails
Michael Jones
mike at proclivis.com
Sun Jan 4 21:22:18 UTC 2015
John,
Assuming stock kernel means following these instructions: http://elinux.org/Minnowboard:MinnowMaxLinuxKernel:
A few things don’t get set:
#
# configuration written to .config
#
Value requested for CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE not in final .config
Requested value: CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE=y
Actual value: # CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
Value requested for CONFIG_USB_PHY not in final .config
Requested value: # CONFIG_USB_PHY is not set
Actual value: CONFIG_USB_PHY=y
Value requested for CONFIG_DW_DMAC_CORE not in final .config
Requested value: # CONFIG_DW_DMAC_CORE is not set
Actual value: CONFIG_DW_DMAC_CORE=m
Value requested for CONFIG_CONFIGFS_FS not in final .config
Requested value: # CONFIG_CONFIGFS_FS is not set
Actual value: CONFIG_CONFIGFS_FS=m
This config did not boot. Using menuconfig I added LVS support, and it then can boot. Boot has a can’t find /etc/selinux/targeted/policy/policy.29 path error. That path does not exist on the MinnowMax, and neither does it on my VM. I am guessing it is either hidden, or I need to turn something off in the stock kernel. If you know what to turn off, please let me know.
Now boots, but /dev/i2c missing.
Rerun menuconfig and enable the /dev/i2c support and other I2C settings that are in Ubuntu. Now UART and I2C work. This suggests the MinnowBoardMax file that is merged should have some other settings in it that enable /dev/i2c support.
A cat of /sys/kernel/debug/gpio produces the same list as the previous version of kernel 3.18.1 (one using ubuntu config files merged with minnow files).
Therefore, a stock kernel did not change the results. So perhaps a change in the kernel broke things. I’ll let you have a look at it next week to confirm you get the same results.
If you find a config that works, please send a .config file I can diff with mine.
Mike
On Jan 3, 2015, at 3:40 PM, John 'Warthog9' Hawley <warthog19 at eaglescrag.net> wrote:
> On 01/03/2015 02:20 PM, Michael Jones wrote:
>> With respect to MinnowBoardMax and Linux 3.18.1 kernel with Ubuntu .config merged with Minnowmax-3.18.txt:
>>
>> I2C and UART are working. GPIO is NOT working.
>>
>> I am having trouble exporting 216 manually on the command line, or by running calimari-btns.sh
>>
>> I get "no device found" when echoing 216 to /sys/class/gpio/export. (type command after sudo -s to exe as root)
>>
>> I did a check of available ports with cat /sys/kernel/debug/gpio and nothing covers 216.
>>
>> So I am wondering if the problem is the .config used to build a 3.18.1 kernel. I merged Minnowmax-3.18.txt, which enables gpio. However, something “extra” from Ubuntu land may interfere.
>>
>> I have added the lines from my .config (grep on GPIO) and the /sys/kernel/debug/gpio data below to see if anyone can recognize the problem.
>>
>> Is there something that needs to be done to enable GPIO similar to using i2c-dev and i2c-tools, etc?
>>
>> Can someone cat their /sys/kernel/debug/gpio file on a system that the calimari-btns.sh runs on and send it?
>>
>> Mike
>>
>> .config
>> ————
>>
>> CONFIG_RFKILL_GPIO=m
>> CONFIG_MTD_GPIO_ADDR=m
>> CONFIG_MTD_NAND_GPIO=m
>> CONFIG_MDIO_GPIO=y
>> CONFIG_KEYBOARD_GPIO=m
>> CONFIG_KEYBOARD_GPIO_POLLED=m
>> CONFIG_MOUSE_GPIO=m
>> # CONFIG_INPUT_GPIO_BEEPER is not set
>> CONFIG_INPUT_GPIO_TILT_POLLED=m
>> CONFIG_INPUT_GPIO_ROTARY_ENCODER=m
>> CONFIG_I2C_MUX_GPIO=m
>> CONFIG_I2C_CBUS_GPIO=m
>> CONFIG_I2C_GPIO=m
>> CONFIG_SPI_GPIO=m
>> CONFIG_PPS_CLIENT_GPIO=m
>> CONFIG_ARCH_WANT_OPTIONAL_GPIOLIB=y
>> CONFIG_GPIOLIB=y
>> CONFIG_GPIO_DEVRES=y
>> CONFIG_GPIO_ACPI=y
>> CONFIG_GPIOLIB_IRQCHIP=y
>> # CONFIG_DEBUG_GPIO is not set
>> CONFIG_GPIO_SYSFS=y
>> CONFIG_GPIO_GENERIC=m
>> CONFIG_GPIO_DA9052=m
>> CONFIG_GPIO_DA9055=m
>> CONFIG_GPIO_MAX730X=m
>> # Memory mapped GPIO drivers:
>> CONFIG_GPIO_GENERIC_PLATFORM=m
>> # CONFIG_GPIO_DWAPB is not set
>> CONFIG_GPIO_IT8761E=m
>> CONFIG_GPIO_F7188X=m
>> # CONFIG_GPIO_SCH311X is not set
>> CONFIG_GPIO_SCH=m
>> CONFIG_GPIO_ICH=m
>> CONFIG_GPIO_VX855=m
>> CONFIG_GPIO_LYNXPOINT=y
>> # I2C GPIO expanders:
>> CONFIG_GPIO_ARIZONA=m
>> CONFIG_GPIO_MAX7300=m
>> CONFIG_GPIO_MAX732X=m
>> CONFIG_GPIO_PCA953X=m
>> CONFIG_GPIO_PCF857X=m
>> CONFIG_GPIO_RC5T583=y
>> CONFIG_GPIO_SX150X=y
>> CONFIG_GPIO_TC3589X=y
>> CONFIG_GPIO_TPS65912=m
>> CONFIG_GPIO_TWL6040=m
>> CONFIG_GPIO_WM831X=m
>> CONFIG_GPIO_WM8350=m
>> CONFIG_GPIO_WM8994=m
>> CONFIG_GPIO_ADP5520=m
>> CONFIG_GPIO_ADP5588=m
>> # PCI GPIO expanders:
>> CONFIG_GPIO_AMD8111=m
>> CONFIG_GPIO_INTEL_MID=y
>> CONFIG_GPIO_ML_IOH=m
>> CONFIG_GPIO_RDC321X=m
>> # SPI GPIO expanders:
>> CONFIG_GPIO_MAX7301=m
>> CONFIG_GPIO_MCP23S08=m
>> CONFIG_GPIO_MC33880=m
>> # AC97 GPIO expanders:
>> CONFIG_GPIO_UCB1400=m
>> # LPC GPIO expanders:
>> CONFIG_GPIO_KEMPLD=m
>> # MODULbus GPIO expanders:
>> CONFIG_GPIO_JANZ_TTL=m
>> CONFIG_GPIO_PALMAS=y
>> CONFIG_GPIO_TPS6586X=y
>> CONFIG_GPIO_TPS65910=y
>> # USB GPIO expanders:
>> CONFIG_GPIO_VIPERBOARD=m
>> CONFIG_W1_MASTER_GPIO=m
>> CONFIG_CHARGER_GPIO=m
>> CONFIG_SENSORS_GPIO_FAN=m
>> CONFIG_SSB_DRIVER_GPIO=y
>> CONFIG_BCMA_DRIVER_GPIO=y
>> CONFIG_PCF50633_GPIO=m
>> # CONFIG_MFD_SM501_GPIO is not set
>> CONFIG_REGULATOR_GPIO=m
>> CONFIG_IR_GPIO_CIR=m
>> CONFIG_BACKLIGHT_GPIO=m
>> CONFIG_USB_GPIO_VBUS=m
>> CONFIG_LEDS_PCA9532_GPIO=y
>> CONFIG_LEDS_GPIO=m
>> CONFIG_LEDS_TRIGGER_GPIO=m
>> CONFIG_EXTCON_GPIO=m
>>
>> /sys/kernel/debug/gpio
>> ———————————————
>>
>> GPIOs 338-381, platform/INT33FC:02, INT33FC:02:
>> gpio-0 (Unrequested ) in hi pad-29 offset:0x1d0 mux:0 up 20k
>> gpio-1 (Unrequested ) in hi pad-33 offset:0x210 mux:0 up 20k
>> gpio-2 (Unrequested ) in hi pad-30 offset:0x1e0 mux:0 up 20k
>> gpio-3 (Unrequested ) in lo pad-31 offset:0x1f0 mux:6 fall level up 2k
>> gpio-4 (Unrequested ) in out lo pad-32 offset:0x200 mux:0
>> gpio-5 (Unrequested ) in hi pad-34 offset:0x220 mux:0
>> gpio-6 (Unrequested ) in lo pad-36 offset:0x240 mux:0
>> gpio-7 (Unrequested ) in lo pad-35 offset:0x230 mux:0
>> gpio-8 (Unrequested ) out lo pad-38 offset:0x260 mux:0
>> gpio-9 (Unrequested ) out lo pad-37 offset:0x250 mux:0
>> gpio-10 (Unrequested ) out lo pad-18 offset:0x120 mux:0
>> gpio-11 (Unrequested ) in lo pad-7 offset:0x070 mux:0 up 10k
>> gpio-12 (Unrequested ) in hi pad-11 offset:0x0b0 mux:0
>> gpio-13 (Unrequested ) in hi pad-20 offset:0x140 mux:0
>> gpio-14 (Unrequested ) out lo pad-17 offset:0x110 mux:1
>> gpio-15 (Unrequested ) in hi pad-1 offset:0x010 mux:0 up 20k
>> gpio-16 (Unrequested ) in hi pad-8 offset:0x080 mux:0 up 20k
>> gpio-17 (Unrequested ) in out hi pad-10 offset:0x0a0 mux:1
>> gpio-18 (Unrequested ) out lo pad-19 offset:0x130 mux:1
>> gpio-19 (Unrequested ) in hi pad-12 offset:0x0c0 mux:0 up 10k
>> gpio-20 (Unrequested ) in hi pad-0 offset:0x000 mux:0 up 10k
>> gpio-21 (Unrequested ) in hi pad-2 offset:0x020 mux:0
>> gpio-22 (Unrequested ) in out lo pad-23 offset:0x170 mux:0
>> gpio-23 (Unrequested ) in out lo pad-39 offset:0x270 mux:0
>> gpio-24 (Unrequested ) in out lo pad-28 offset:0x1c0 mux:0
>> gpio-25 (Unrequested ) in out lo pad-27 offset:0x1b0 mux:0
>> gpio-26 (Unrequested ) in out lo pad-22 offset:0x160 mux:0
>> gpio-27 (Unrequested ) in hi pad-21 offset:0x150 mux:0 up 20k
>> gpio-28 (Unrequested ) in hi pad-24 offset:0x180 mux:0 up 20k
>> gpio-29 (Unrequested ) in hi pad-25 offset:0x190 mux:0 up 20k
>> gpio-30 (Unrequested ) in hi pad-26 offset:0x1a0 mux:0 up 20k
>> gpio-31 (Unrequested ) in out lo pad-51 offset:0x330 mux:0
>> gpio-32 (Unrequested ) in out lo pad-56 offset:0x380 mux:0
>> gpio-33 (Unrequested ) in out lo pad-54 offset:0x360 mux:0
>> gpio-34 (Unrequested ) in out lo pad-49 offset:0x310 mux:0
>> gpio-35 (Unrequested ) in out lo pad-55 offset:0x370 mux:0
>> gpio-36 (Unrequested ) in out lo pad-48 offset:0x300 mux:0
>> gpio-37 (Unrequested ) in out lo pad-57 offset:0x390 mux:0
>> gpio-38 (Unrequested ) in out lo pad-50 offset:0x320 mux:0
>> gpio-39 (Unrequested ) in out lo pad-58 offset:0x3a0 mux:0
>> gpio-40 (Unrequested ) in out hi pad-52 offset:0x340 mux:0
>> gpio-41 (Unrequested ) in out lo pad-53 offset:0x350 mux:0
>> gpio-42 (Unrequested ) in out hi pad-59 offset:0x3b0 mux:0
>> gpio-43 (Unrequested ) in out lo pad-40 offset:0x280 mux:0
>>
>> GPIOs 382-409, platform/INT33FC:01, INT33FC:01:
>> gpio-0 (Unrequested ) in lo pad-19 offset:0x130 mux:2
>> gpio-1 (Unrequested ) in lo pad-18 offset:0x120 mux:2
>> gpio-2 (Unrequested ) in lo pad-17 offset:0x110 mux:2
>> gpio-3 (Unrequested ) in out lo pad-20 offset:0x140 mux:2
>> gpio-4 (Unrequested ) in out lo pad-21 offset:0x150 mux:2
>> gpio-5 (Unrequested ) in out lo pad-22 offset:0x160 mux:2
>> gpio-6 (Unrequested ) in lo pad-24 offset:0x180 mux:0 down 20k
>> gpio-7 (Unrequested ) in lo pad-25 offset:0x190 mux:2 down 20k
>> gpio-8 (Unrequested ) in lo pad-23 offset:0x170 mux:0 down 20k
>> gpio-9 (Unrequested ) in out lo pad-16 offset:0x100 mux:0
>> gpio-10 (Unrequested ) in out lo pad-14 offset:0x0e0 mux:0
>> gpio-11 (Unrequested ) in out lo pad-15 offset:0x0f0 mux:0
>> gpio-12 (Unrequested ) out lo pad-12 offset:0x0c0 mux:0
>> gpio-13 (Unrequested ) in lo pad-26 offset:0x1a0 mux:1
>> gpio-14 (Unrequested ) in out lo pad-27 offset:0x1b0 mux:1
>> gpio-15 (Unrequested ) in out lo pad-1 offset:0x010 mux:0
>> gpio-16 (Unrequested ) in out lo pad-4 offset:0x040 mux:0
>> gpio-17 (Unrequested ) in out lo pad-8 offset:0x080 mux:0
>> gpio-18 (Unrequested ) in out lo pad-11 offset:0x0b0 mux:0
>> gpio-19 (Unrequested ) in out lo pad-0 offset:0x000 mux:0
>> gpio-20 (Unrequested ) in out lo pad-3 offset:0x030 mux:0
>> gpio-21 (Unrequested ) in out lo pad-6 offset:0x060 mux:0
>> gpio-22 (Unrequested ) in out lo pad-10 offset:0x0a0 mux:0
>> gpio-23 (Unrequested ) in out lo pad-13 offset:0x0d0 mux:0
>> gpio-24 (Unrequested ) in out lo pad-2 offset:0x020 mux:0
>> gpio-25 (Unrequested ) in out lo pad-5 offset:0x050 mux:0
>> gpio-26 (Unrequested ) in out lo pad-9 offset:0x090 mux:0
>> gpio-27 (Unrequested ) lo pad-7 offset:0x070 mux:0 down 20k
>> GPIOs 410-511, platform/INT33FC:00, INT33FC:00:
>> gpio-0 (Unrequested ) in lo pad-85 offset:0x550 mux:1
>> gpio-1 (Unrequested ) in lo pad-89 offset:0x590 mux:1
>> gpio-2 (Unrequested ) in lo pad-93 offset:0x5d0 mux:1
>> gpio-3 (Unrequested ) in hi pad-96 offset:0x600 mux:1 up 10k
>> gpio-4 (Unrequested ) in hi pad-99 offset:0x630 mux:1 up 10k
>> gpio-5 (Unrequested ) in hi pad-102 offset:0x660 mux:1 up 10k
>> gpio-6 (Unrequested ) in out hi pad-98 offset:0x620 mux:0
>> gpio-7 (Unrequested ) in hi pad-101 offset:0x650 mux:2 up 20k
>> gpio-8 (Unrequested ) in out lo pad-34 offset:0x220 mux:0
>> gpio-9 (Unrequested ) in out lo pad-37 offset:0x250 mux:0
>> gpio-10 (Unrequested ) in out lo pad-36 offset:0x240 mux:0
>> gpio-11 (Unrequested ) in out lo pad-38 offset:0x260 mux:0
>> gpio-12 (Unrequested ) in out lo pad-39 offset:0x270 mux:0
>> gpio-13 (Unrequested ) in out lo pad-35 offset:0x230 mux:0
>> gpio-14 (Unrequested ) in out lo pad-40 offset:0x280 mux:0
>> gpio-15 (Unrequested ) in out lo pad-84 offset:0x540 mux:0
>> gpio-16 (Unrequested ) in out lo pad-62 offset:0x3e0 mux:3 down 20k
>> gpio-17 (Unrequested ) in out lo pad-61 offset:0x3d0 mux:3 up 20k
>> gpio-18 (Unrequested ) in out lo pad-64 offset:0x400 mux:3 up 20k
>> gpio-19 (Unrequested ) in out lo pad-59 offset:0x3b0 mux:3 up 20k
>> gpio-20 (Unrequested ) in out hi pad-54 offset:0x360 mux:3 up 20k
>> gpio-21 (Unrequested ) in out lo pad-56 offset:0x380 mux:3 up 20k
>> gpio-22 (Unrequested ) in out lo pad-60 offset:0x3c0 mux:3 up 20k
>> gpio-23 (Unrequested ) in out lo pad-55 offset:0x370 mux:3 up 20k
>> gpio-24 (Unrequested ) in out lo pad-63 offset:0x3f0 mux:3 up 20k
>> gpio-25 (Unrequested ) in out lo pad-57 offset:0x390 mux:3 up 20k
>> gpio-26 (Unrequested ) in out hi pad-51 offset:0x330 mux:3 down 20k
>> gpio-27 (Unrequested ) in out lo pad-50 offset:0x320 mux:1 down 20k
>> gpio-28 (Unrequested ) in out lo pad-53 offset:0x350 mux:1 up 20k
>> gpio-29 (Unrequested ) in out lo pad-47 offset:0x2f0 mux:1 up 20k
>> gpio-30 (Unrequested ) in out lo pad-52 offset:0x340 mux:1 up 20k
>> gpio-31 (Unrequested ) in out hi pad-49 offset:0x310 mux:1 up 20k
>> gpio-32 (Unrequested ) in out lo pad-48 offset:0x300 mux:1 up 20k
>> gpio-33 (Unrequested ) in lo pad-43 offset:0x2b0 mux:1 down 20k
>> gpio-34 (Unrequested ) in lo pad-46 offset:0x2e0 mux:1 up 20k
>> gpio-35 (Unrequested ) in lo pad-41 offset:0x290 mux:1 up 20k
>> gpio-36 (Unrequested ) in lo pad-45 offset:0x2d0 mux:1 up 20k
>> gpio-37 (Unrequested ) in lo pad-42 offset:0x2a0 mux:1 up 20k
>> gpio-38 (Unrequested ) in hi pad-58 offset:0x3a0 mux:1 fall rise
>> gpio-39 (Unrequested ) in lo pad-44 offset:0x2c0 mux:1 up 20k
>> gpio-40 (Unrequested ) in lo pad-95 offset:0x5f0 mux:1 down 20k
>> gpio-41 (Unrequested ) in hi pad-105 offset:0x690 mux:1 up 20k
>> gpio-42 (Unrequested ) in out lo pad-70 offset:0x460 mux:0
>> gpio-43 (Unrequested ) in out lo pad-68 offset:0x440 mux:0
>> gpio-44 (Unrequested ) in out lo pad-67 offset:0x430 mux:0
>> gpio-45 (Unrequested ) in out lo pad-66 offset:0x420 mux:0
>> gpio-46 (Unrequested ) in out hi pad-69 offset:0x450 mux:0
>> gpio-47 (Unrequested ) in out lo pad-71 offset:0x470 mux:0
>> gpio-48 (Unrequested ) in out lo pad-65 offset:0x410 mux:0
>> gpio-49 (Unrequested ) in out hi pad-72 offset:0x480 mux:0
>> gpio-50 (Unrequested ) in out lo pad-86 offset:0x560 mux:0
>> gpio-51 (Unrequested ) in lo pad-90 offset:0x5a0 mux:1
>> gpio-52 (Unrequested ) in lo pad-88 offset:0x580 mux:1
>> gpio-53 (Unrequested ) in hi pad-92 offset:0x5c0 mux:1 up 10k
>> gpio-54 (Unrequested ) in hi pad-103 offset:0x670 mux:0 up 20k
>> gpio-55 (Unrequested ) in out lo pad-77 offset:0x4d0 mux:0
>> gpio-56 (Unrequested ) in hi pad-79 offset:0x4f0 mux:0 up 20k
>> gpio-57 (Unrequested ) in lo pad-83 offset:0x530 mux:1 down 20k
>> gpio-58 (Unrequested ) in out lo pad-78 offset:0x4e0 mux:0
>> gpio-59 (Unrequested ) in out lo pad-81 offset:0x510 mux:0
>> gpio-60 (Unrequested ) out lo pad-80 offset:0x500 mux:0
>> gpio-61 (Unrequested ) in lo pad-82 offset:0x520 mux:1 up 20k
>> gpio-62 (Unrequested ) in hi pad-13 offset:0x0d0 mux:0 up 20k
>> gpio-63 (Unrequested ) in hi pad-12 offset:0x0c0 mux:0 up 20k
>> gpio-64 (Unrequested ) in hi pad-15 offset:0x0f0 mux:0 up 20k
>> gpio-65 (Unrequested ) in hi pad-14 offset:0x0e0 mux:0 up 20k
>> gpio-66 (Unrequested ) in hi pad-17 offset:0x110 mux:1 up 20k
>> gpio-67 (Unrequested ) in lo pad-18 offset:0x120 mux:1 up 20k
>> gpio-68 (Unrequested ) in lo pad-19 offset:0x130 mux:1 up 20k
>> gpio-69 (Unrequested ) in lo pad-16 offset:0x100 mux:1 down 20k
>> gpio-70 (Unrequested ) in lo pad-2 offset:0x020 mux:1 up 20k
>> gpio-71 (Unrequested ) in lo pad-1 offset:0x010 mux:1 up 20k
>> gpio-72 (Unrequested ) in hi pad-0 offset:0x000 mux:0 up 20k
>> gpio-73 (Unrequested ) in hi pad-4 offset:0x040 mux:0 up 20k
>> gpio-74 (Unrequested ) in lo pad-6 offset:0x060 mux:1 up 20k
>> gpio-75 (Unrequested ) in lo pad-7 offset:0x070 mux:1 up 20k
>> gpio-76 (Unrequested ) in out hi pad-9 offset:0x090 mux:0 up 20k
>> gpio-77 (Unrequested ) in hi pad-8 offset:0x080 mux:0 up 20k
>> gpio-78 (Unrequested ) in out hi pad-33 offset:0x210 mux:0
>> gpio-79 (Unrequested ) in out hi pad-32 offset:0x200 mux:0
>> gpio-80 (Unrequested ) in lo pad-31 offset:0x1f0 mux:1
>> gpio-81 (Unrequested ) in lo pad-30 offset:0x1e0 mux:1
>> gpio-82 (Unrequested ) in out hi pad-29 offset:0x1d0 mux:0
>> gpio-83 (Unrequested ) in out hi pad-27 offset:0x1b0 mux:0
>> gpio-84 (Unrequested ) in out hi pad-25 offset:0x190 mux:0
>> gpio-85 (Unrequested ) in out hi pad-28 offset:0x1c0 mux:0
>> gpio-86 (Unrequested ) in lo pad-26 offset:0x1a0 mux:1 up 20k
>> gpio-87 (Unrequested ) in out hi pad-23 offset:0x170 mux:0
>> gpio-88 (Unrequested ) in lo pad-21 offset:0x150 mux:1 up 2k
>> gpio-89 (Unrequested ) in lo pad-20 offset:0x140 mux:1 up 2k
>> gpio-90 (Unrequested ) in lo pad-24 offset:0x180 mux:1 up 2k
>> gpio-91 (Unrequested ) in lo pad-22 offset:0x160 mux:1 up 2k
>> gpio-92 (Unrequested ) in out lo pad-5 offset:0x050 mux:1
>> gpio-93 (Unrequested ) out lo pad-3 offset:0x030 mux:1
>> gpio-94 (Unrequested ) in lo pad-10 offset:0x0a0 mux:1 down 20k
>> gpio-95 (Unrequested ) in lo pad-11 offset:0x0b0 mux:1
>> gpio-96 (Unrequested ) in out lo pad-106 offset:0x6a0 mux:0
>> gpio-97 (Unrequested ) in out lo pad-87 offset:0x570 mux:0
>> gpio-98 (Unrequested ) in out lo pad-91 offset:0x5b0 mux:0
>> gpio-99 (Unrequested ) in out lo pad-104 offset:0x680 mux:0
>> gpio-100 (Unrequested ) in out lo pad-97 offset:0x610 mux:0
>> gpio-101 (Unrequested ) in out lo pad-100 offset:0x640 mux:0
>
> it's pretty obvious that the Ubuntu kernel there is enumerating the
> gpio's significantly different than a stock kernel (or any other
> distro's kernel). When I get a chance this week I'll try and get it
> figured out what's going on there.
>
> Any chance you can try a completely stock kernel 3.18.x kernel?
>
> - John 'Warthog9' Hawley
> _______________________________________________
> elinux-MinnowBoard mailing list
> elinux-MinnowBoard at lists.elinux.org
> http://lists.elinux.org/mailman/listinfo/elinux-minnowboard
More information about the elinux-MinnowBoard
mailing list