Dear forum,
I am a newbe to BBB and Linux although >30 years embedded experience.
Question about u-boot:
U-boot refers two GPIO pins (53 and 54). See listing snippet below.
None of these pins can be found described in any BBB manual nor by googling the net.
If pin numbering = 32*(<block number> + 1) + <block pin number>,
this should correspond to GPIO0_21 (MII1_TXD1) and GPIO0_22 (EHRPWM2A) which make no sense.
Please advice.
Best regards
Terje
U-Boot 2013.04-dirty (Jul 10 2013 - 14:02:53)
:
Hit any key to stop autoboot: 1 [08][08][08] 0
gpio: pin 53 (gpio 53) value is 1
mmc_send_cmd : timeout: No status update
Card did not respond to voltage select!
mmc0(part 0) is current device
mmc_send_cmd : timeout: No status update
Card did not respond to voltage select!
No micro SD card found, setting mmcdev to 1
mmc1(part 0) is current device
mmc_send_cmd : timeout: No status update
gpio: pin 54 (gpio 54) value is 1
SD/MMC found on device 1
reading uEnv.txt