#u-boot on 2024-05-23 — irc logs at libera.irclog.whitequark.org

2024-05-20 16:06 Tartarus changed the topic of #u-boot to: SOURCE MOVED TO https://source.denx.de/u-boot/u-boot.git / U-Boot v2024.04, v2024.07-rc3 are OUT / Merge Window is CLOSED, next branch is OPEN / Release v2024.07 is scheduled for 01 July 2024 / Channel archives at https://libera.irclog.whitequark.org/u-boot

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07:42 <Jones42> marex: is there a imx6image or imx6cst etype planned or in the works? Or could that be something someone (me?) should implement?

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07:45 <Jones42> We're using both imx8m and imx6dl, so a solution that works similar for both would be cool. And since they both use HABv4 it should be somewhat straight forward unless I'm missing something.

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13:44 <LetoThe2nd> how would one debug a failure to load a dtb from ext4? the error message "Failed to load '/boot/bcm2711-rpi-cm4.dtb'" is in itself not exactly revealing, unfortunately.

13:44 <marex> LetoThe2nd: start by pasting the command that you use to trigger the failure maybe ?

13:45 <marex> LetoThe2nd: mmc dev 0 ; load mmc 0:1 $loadaddr boot/file.dtb

13:45 <marex> does this fail ?

13:45 <LetoThe2nd> marex: originally: ext4load mmc 0:2 ${fdt_addr_r} /boot/bcm2711-rpi-cm4.dtb

13:46 <LetoThe2nd> https://www.irccloud.com/pastebin/JEZvOcHZ/

13:46 <marex> LetoThe2nd: load mmc 0:2 $loadaddr /boot/bcm2711-rpi-cm4.dtb

13:46 <marex> LetoThe2nd: fails ?

13:47 <LetoThe2nd> marex: yup, same error

13:50 <marex> LetoThe2nd: ls mmc 0:2

13:50 <marex> LetoThe2nd: or ls mmc 0:2 boot/

13:50 <marex> LetoThe2nd: does it work if you drop the / prefix, i.e. load mmc 0:2 $loadaddr boot/bcm2711-rpi-cm4.dtb

13:50 <LetoThe2nd> https://www.irccloud.com/pastebin/3trwrhUI/

13:51 <marex> LetoThe2nd: so all of it is a symlink ... is the symlink valid ?

13:52 <LetoThe2nd> marex: good question. can I inspect that in uboot, or do I have to do the sd-card-to-desktop roundtrip?

13:53 <marex> LetoThe2nd: I think the later

13:53 <LetoThe2nd> marex: ok thanks!

13:54 <marex> LetoThe2nd: I might be wrong and there might be some way to check, but I am not aware of one

13:54 <LetoThe2nd> marex: np, thanks for the guidance!

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14:12 <Jones42> is there an imx6image or imx6cst binman etype planned or in the works? Or could that be something someone (me?) should implement?

14:27 <umbramalison> what is the equivalent to linux,extcon-usb-gpio in u-boot?

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14:33 <marex> Jones42: you'd have to implement it, there is nothing for mx6 so far

14:33 <marex> umbramalison: none, not implemented, send a patch

14:36 <umbramalison> marex: rabbit hole, or? (in your opinion, if you have an holistic view of it which I don't)

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14:54 <LetoThe2nd> marex: for the record, replacing the symlinks with proper files does the trick. now wondering why linux stays silent :-(

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18:16 <marex> umbramalison: what are you after, ID pin handling via GPIO or Vbus handling ?

18:16 <marex> LetoThe2nd: so the symlinks were incorrect or what's up with that ?

18:24 <LetoThe2nd> marex: yes, exactly. The image creation tool misbehaved.

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18:24 <LetoThe2nd> *sd image, that is.

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18:28 <marex> LetoThe2nd: buildroot ?

18:29 <LetoThe2nd> No, internal one. Having fun with modifications of the raspberry pi Debian derivative

18:30 <marex> LetoThe2nd: fun

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19:09 <umbramalison> marex: vbus handling

19:13 <umbramalison> marex: This custom board has a DWC3 usb (TI AM5726 SoC), the DWC3 expects an extcon component, which TI typically provide via PMIC. All AM57xx examples show a pmic extcon component that links up the VBUS (though I don't want to say exclusively VBUS, i'm not that confident in my understanding). This custom board doesn't have a PMIC :) (well not one that the SoC can talk to anyway)...

19:15 <umbramalison> I was banging my head on the table until I found the linux virtual driver VBUS extcon driver. But now I have to support loading SPL/TPL over USB, so i'm back to banging my head

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23:20 <marex> umbramalison: isnt that just a vbus regulator ?

23:20 <marex> NishanthMenon: ^

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