using UART0 with alt pins on GP32-33 it does not set pull ups automatically, but linux seems to sort it out. Just a note for anyone with garbled uart from start.elf and u-boot.
replace with32-33 drive: -1 fsel: 7 term: 2
3.07 [ramdisk] recover4.elf not found
3.07 [ramdisk] recovery.elf not found
3.98 Read start4.elf bytes 2256800 hnd 0xc5
3.00 Read fixup4.dat bytes 5436 hnd 0x513
3.04 0x00a03150 0x00000000 0x00001fff
3.07 MEM GPU: 128 ARM: 896 TOTAL: 1024
3.89 Firmware: 86ccc427f35fdc604edc511881cdf579df945fb4 Apr 17 2024 17:27:09
3.22 Starting start4.elf @ 0xfec00200 partition 0
3.24 PCI0 reset
3.29 +
Code:
dtoverlay=uart0,txd0_pin=32,rxd0_pin=33,pin_func=7Code:
gpio=32-33=a3,pudtoverlay=uart0,txd0_pin=32,rxd0_pin=33,pin_func=73.07 [ramdisk] recover4.elf not found
3.07 [ramdisk] recovery.elf not found
3.98 Read start4.elf bytes 2256800 hnd 0xc5
3.00 Read fixup4.dat bytes 5436 hnd 0x513
3.04 0x00a03150 0x00000000 0x00001fff
3.07 MEM GPU: 128 ARM: 896 TOTAL: 1024
3.89 Firmware: 86ccc427f35fdc604edc511881cdf579df945fb4 Apr 17 2024 17:27:09
3.22 Starting start4.elf @ 0xfec00200 partition 0
3.24 PCI0 reset
3.29 +
Statistics: Posted by wcl55 — Thu Jul 31, 2025 2:19 pm