Hi Adarsh, On 06/05/21 11:28 am, Adarsh Babu Kalepalli wrote: > Hi, > > Error output "*Command 'gpio' failed: Error -19*" is occurring with "*gpio > status -a*" > command on Beaglebone Black.
Error -19 is ENODEV. Can you check if you have gpio devices being probed? > > The "gpio" command is proper till "U-Boot 2021.04-rc2". > Error message is noticed from subsequent releases on-wards. Any chance you were able to bisect to the culprit commit? which defconfig are you using? Thanks and regards, Lokesh > > Problem is noticed on u-boot versions from *U-Boot 2021.04-rc3 to U-Boot > 2021.07-rc1* > The same command is OK on "sandbox" and "rpi 0 wireless" . > > Not sure if the maintenance of code for old boards such as Beaglebone Black is > still actively persuaded.Trying to report the observations > > ------------------------------------------------------------------ > Code/Output : > ------------------------------------------------------------------- > U-Boot SPL 2021.07-rc1-00179-g8ddaf94358 (May 03 2021 - 15:36:38 +0530) > Trying to boot from MMC1 > > > U-Boot 2021.07-rc1-00179-g8ddaf94358 (May 03 2021 - 15:36:38 +0530) > > CPU : AM335X-GP rev 2.1 > Model: TI AM335x BeagleBone Black > DRAM: 512 MiB > WDT: Started with servicing (60s timeout) > NAND: 0 MiB > MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1 > Loading Environment from FAT... Unable to read "uboot.env" from mmc0:1... > <ethaddr> not set. Validating first E-fuse MAC > Net: eth2: ethernet@4a100000, eth3: usb_ether > Hit any key to stop autoboot: 0 > => gpio status -a > Command 'gpio' failed: Error -19 > => > ------------------------------------------------------------------- > Regards, > Adarsh >
