I wanted to enable two custom overlays BB-UART1-RS485, BB-UART2-RS485 at boot.
To enable BB-UART1-RS485, I need to disable BB-UART1, to I added these lines to /boot/uEnv.txt cape_disable=bone_capemgr.disable_partno=BB-UART1 cape_enable=bone_capemgr.enable_partno=BB-UART1-RS485,BB-UART2-RS485 When I reboot, there are attempts to load BB-UART1-RS485 and BB-UART2-RS485, but only the attempt to load BB-UART1-RS485 fails. [ 2.284859] bone_capemgr bone_capemgr: Baseboard: 'A335BNLT,00C0,2716BBBK1C19' [ 2.284916] bone_capemgr bone_capemgr: compatible-baseboard=ti,beaglebone-black - #slots=4 [ 2.324923] bone_capemgr bone_capemgr: Invalid signature 'ffffffff' at slot 0 [ 2.332414] bone_capemgr bone_capemgr: slot #0: No cape found [ 2.376837] bone_capemgr bone_capemgr: slot #1: No cape found [ 2.420834] bone_capemgr bone_capemgr: slot #2: No cape found [ 2.464833] bone_capemgr bone_capemgr: slot #3: No cape found [ 2.470895] bone_capemgr bone_capemgr: enabled_partno PARTNO 'BB-UART1-RS485' VER 'N/A' PR '0' [ 2.470907] bone_capemgr bone_capemgr: slot #4: override [ 2.470920] bone_capemgr bone_capemgr: Using override eeprom data at slot 4 [ 2.470935] bone_capemgr bone_capemgr: slot #4: 'Override Board Name,00A0,Override Manuf,BB-UART1-RS485' [ 2.471034] bone_capemgr bone_capemgr: enabled_partno PARTNO 'BB-UART2-RS485' VER 'N/A' PR '0' [ 2.471045] bone_capemgr bone_capemgr: slot #5: override [ 2.471056] bone_capemgr bone_capemgr: Using override eeprom data at slot 5 [ 2.471069] bone_capemgr bone_capemgr: slot #5: 'Override Board Name,00A0,Override Manuf,BB-UART2-RS485' [ 2.471443] bone_capemgr bone_capemgr: initialized OK. [ 2.473391] PM: bootloader does not support rtc-only! [ 2.474234] omap_rtc 44e3e000.rtc: setting system clock to 2000-01-01 00:37:50 UTC (946687070) [ 2.474261] of_cfs_init [ 2.474364] of_cfs_init: OK [ 2.482626] omap_uart 48024000.serial: no wakeirq for uart2 [ 2.485050] 48024000.serial: ttyO2 at MMIO 0x48024000 (irq = 187, base_baud = 3000000) is a OMAP UART2 [ 2.485624] bone_capemgr bone_capemgr: slot #5: dtbo 'BB-UART2-RS485-00A0.dtbo' loaded; overlay id #0 [ 2.486405] PM: Hibernation image not present or could not be loaded. [ 3.489130] bone_capemgr bone_capemgr: loader: failed to load slot-4 BB-UART1-RS485:00A0 (prio 0) [ 5.589966] EXT4-fs (mmcblk1p1): mounted filesystem with ordered data mode. Opts: (null) ... at some time later, something (not me) tries to load BB-UART1 [ 9.330248] bone_capemgr bone_capemgr: part_number 'BB-UART1', version 'N/A' [ 9.330280] bone_capemgr bone_capemgr: slot #6: override [ 9.330296] bone_capemgr bone_capemgr: Using override eeprom data at slot 6 [ 9.330312] bone_capemgr bone_capemgr: slot #6: 'Override Board Name,00A0,Override Manuf,BB-UART1' [ 9.348185] omap_uart 48022000.serial: no wakeirq for uart1 [ 9.363130] 48022000.serial: ttyO1 at MMIO 0x48022000 (irq = 188, base_baud = 3000000) is a OMAP UART1 [ 9.366396] bone_capemgr bone_capemgr: slot #6: dtbo 'BB-UART1-00A0.dtbo' loaded; overlay id #1 ... I tried to load BB-UART1-RS485 while BB-UART1 was loaded, to check the symptoms [ 319.949361] bone_capemgr bone_capemgr: part_number 'BB-UART1-RS485', version 'N/A' [ 319.949397] bone_capemgr bone_capemgr: slot #7: override [ 319.949413] bone_capemgr bone_capemgr: Using override eeprom data at slot 7 [ 319.949429] bone_capemgr bone_capemgr: slot #7: 'Override Board Name,00A0,Override Manuf,BB-UART1-RS485' [ 319.951146] bone_capemgr bone_capemgr: slot #7: BB-UART1-RS485 conflict P9.24 (#6:BB-UART1) [ 319.960040] bone_capemgr bone_capemgr: slot #7: Failed verification ... I then removed BB-UART1 [ 343.829338] bone_capemgr bone_capemgr: Removed slot #6 ... And tried to load BB-UART1-RS485, which succeeded [ 345.580484] bone_capemgr bone_capemgr: part_number 'BB-UART1-RS485', version 'N/A' [ 345.580518] bone_capemgr bone_capemgr: slot #8: override [ 345.580534] bone_capemgr bone_capemgr: Using override eeprom data at slot 8 [ 345.580550] bone_capemgr bone_capemgr: slot #8: 'Override Board Name,00A0,Override Manuf,BB-UART1-RS485' [ 345.589660] omap_uart 48022000.serial: no wakeirq for uart1 [ 345.593608] 48022000.serial: ttyO1 at MMIO 0x48022000 (irq = 188, base_baud = 3000000) is a OMAP UART1 [ 345.594399] bone_capemgr bone_capemgr: slot #8: dtbo 'BB-UART1-RS485-00A0.dtbo' loaded; overlay id #1 Questions: * what could be causing BB-UART1-RS485 to fail during boot, but succeed later on when I manually load it? * what system component might be causing BB-UART1 to load "by itself"? how do I prevent this happening? jon. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/64929411-28a1-4b3d-8139-e8daa5816b46%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
