[PATCH 1/4] rockchip: rk3399-roc-pc: Hook sysreset gpio to enable full reset

[Paul Kocialkowski]

Hi Quentin,

Thanks for looking into this!

Le Fri 27 Sep 24, 11:25, Quentin Schulz a écrit :
> I'm not entirely sure on whose side the issue is, but I didn't receive your
> mails, either from the U-Boot mailing list or directly from the Cc field. I
> however could find the patch on lore.kernel.org... and I also received yours
> and Dragan's exchange on patch 4 (but not the patch itself). Any chance you
> received something from my mail server? Does anyone in Cc of this mail
> actually received the mail?

No automatic reply from your mail server and the logs look good on my side,
with a 250 result on all sent patches. Strange indeed...

> > diff --git a/arch/arm/dts/rk3399-roc-pc-u-boot.dtsi b/arch/arm/dts/rk3399-roc-pc-u-boot.dtsi
> > index aecf7dbe383c..883d399a06a3 100644
> > --- a/arch/arm/dts/rk3399-roc-pc-u-boot.dtsi
> > +++ b/arch/arm/dts/rk3399-roc-pc-u-boot.dtsi
> > @@ -7,6 +7,10 @@
> >   #include "rk3399-sdram-lpddr4-100.dtsi"
> >   / {
> > +	config {
> > +		sysreset-gpio = <&gpio1 RK_PA6 GPIO_ACTIVE_HIGH>;
> 
> I think this is the wrong pin to use.
> 
> The routing of GPIO1_A6 is similar on RK3399 Puma and Pine64 RockPro64, but
> it differs massively for the Firefly Roc PC.
> 
> However, a similar routing is done for GPIO1_A5 on the Firefly, I believe
> that one is more appropriate. What do you think?

I just double-checked the schematics (ROC_3399_PC), looking at signal OTP_OUT_H
which is definitely connected to GPIO1_A6 (P26).

Also it clearly resets the board when toggled and solves the MMC reset issue
I was having on this exact board, so I'm rather confident that it's the right
one to use :)

Cheers,

Paul

-- 
Paul Kocialkowski,

Independent contractor - sys-base - https://www.sys-base.io/
Free software developer - https://www.paulk.fr/

Specialist in multimedia, graphics and embedded hardware support with Linux.
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