5.17 only negotiates 500mA with PD

Kernel 5.17.0-1-librem5

u-boot: u_boot_version=2022.04-rc1

TPS: 0x4c35445000000200

With 5.17 when plugging the charger after boot, it only negotiates 500mA.

tail -n+0 /sys/class/power_supply/*/uevent

POWER_SUPPLY_USB_TYPE=C [PD]
POWER_SUPPLY_ONLINE=1
POWER_SUPPLY_PRESENT=1
POWER_SUPPLY_CURRENT_MAX=500000
POWER_SUPPLY_VOLTAGE_MAX=5000000

Powering down and waiting 15 seconds before booting again and then connecting the charger has no effect.

sudo cat /sys/kernel/debug/tracing/trace

Provides:

trace.txt

Which according to Angus is odd.

A workaround was to connect the charger with the phone powered down.

Reverting to 5.16 solved the issue. And now the device does 3000mA when connecting the charger after boot.

==> /sys/class/power_supply/tps6598x-source-psy-0-003f/uevent <==
POWER_SUPPLY_NAME=tps6598x-source-psy-0-003f
POWER_SUPPLY_TYPE=USB
POWER_SUPPLY_USB_TYPE=C [PD]
POWER_SUPPLY_ONLINE=1
POWER_SUPPLY_PRESENT=1
POWER_SUPPLY_CURRENT_MAX=3000000
POWER_SUPPLY_VOLTAGE_MAX=5000000
purism@pureos:~$ uname -a
Linux pureos 5.16.0-1-librem5 #1 SMP PREEMPT Sat Feb 26 21:25:54 UTC 2022 aarch64 GNU/Linux