Re: [PATCH 0/9] arm64: dts: qcom: hamoa: Mark the EC reset gpio as reserved on all boards

[Abel Vesa]

On 26-08-31 10:07:31, Bjorn Andersson wrote:
> On Mon, Aug 31, 2026 at 12:54:40PM +0300, Abel Vesa wrote:
> > GPIO 65 from TLMM is used by the embedded controller as its reset line on
> > these boards. Reserve it to prevent Linux from requesting or reconfiguring it.
> > 
> > I was only able to confirm that this GPIO is actually connected to the
> > EC reset on the CRD, QCP, xps13 and t14s. But it seems like it is
> > recurring them shared between all Hamoa based devices, so I reserved it
> > on all.
> 
> Such leaps of faith comes down to risk vs reward; the risk seems
> reasonable, but your commit message just states a fact not a problem -
> so there's no documented reward...

So I actually considered adding a sentence that would mention that on
some of these devices, if you play with EC reset gpio, you might have to
disassemble the device and unplug the battery, in order to be able to
use it again. But I'm not sure that is applicable to all devices.
All I know, from someone else's experience, is that we should not be
controlling that from linux. Therefore, the commit message did not
make any assumptions about what the "reward" is.

However, I can add such a line if you still think it is worth it.