On 9/22/21 1:07 PM, Tony Lindgren wrote:

quoted

Hmm.. no luck on top of d5f6545934c4 ("qnx4: work around gcc false
positive warning bug") with the patch. Nothing gets printed after
"Starting kernel ...". Without the patch boots fine.

OK interesting. Best to keep the booting quirk handling for beagle
rev a to b4 then. No reason to keep the timer quirks for rev b5 and c
boards though.

Can you try the following patch that removes the quirks for omap3-beagle
by default?

The patch also adds a new omap3-beagle-ab4.dts that keeps the current
quirks and also limits the pmic capabilities for the old known buggy
boards.

Better luck with this one but looks like idling cause "undefined
instruction" crash. Cache/memory etc corruption perhaps? Serial console
log attached.

I used the new omap3-beagle-ab4.dtb:

cat arch/arm/boot/dts/omap3-beagle-ab4.dtb >>arch/arm/boot/zImage; ma
LOADADDR=0x80008000 uImage

I also noticed that omap3-beagle.dts is missing the twl power node
probably because of the rev a to b4 quirks.

Adding the twl power node with "ti,twl4030-power-idle-osc-off" similar
to beagle xm might produce some nice power savings after the quirks are
gone :)

Needs to be tested with kernel serial console detached and serial
port autoidle configured. That's a different patch for sure.

I guess the timer change would be the fix and twl changes for normal
development cycle?

Jarkko