Re: [PATCH v2 5/8] power: supply: qcom_battmgr: Add charge control support

[Fenglin Wu]

On 5/31/2025 6:36 PM, György Kurucz wrote:
> > Add charge control support for SM8550 and X1E80100.
>
> Thank you for this, tested on my Lenovo Yoga Slim 7x, the limiting 
> works well, I finally don't have to worry about leaving my laptop 
> plugged in for too long.
>
> One small thing I noticed is that after setting the sysfs values and 
> rebooting, they report 0 again. The limiting appears to stay in effect 
> though, so it seems that the firmware does keep the values, but Linux 
> does not read them back. Indeed, looking at the code, it seems that 
> actually reading back the values is only implemented for the SM8550.

Right.

Based on offline information, X1E80100 doesn't support reading back 
those threshold values in battery management firmware, so I can only use 
the cached values for sysfs read.

> Anyway, this is just a small nitpick, this does not really affect the 
> functionality, and I would support merging this series regardless of 
> whether the read back values are always correct.
>
> György