Le Fri 27 Sep 24, 12:07, Quentin Schulz a écrit :
> > > > 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 :)
>
> At least we're on the same page for using OTP_OUT_H, but it's routed to
> GPIO1_A5 on the schematics I found:
>
> https://www.t-firefly.com/download/Firefly-RK3399/hardware/Firefly-RK3399_V10/Firefly-RK3399_V10_SCH_(2017-2-8).pdf
>
> Mmmmmm seems like I was looking at the wrong schematics?Ah yes I think the Firefly-RK3399 and ROC-RK3399-PC are two distinct designs. > https://en.t-firefly.com/doc/download/page/id/51.html does route GPIO1_A6 to > the OTP_OUT_H signal.. > https://en.t-firefly.com/doc/download/page/id/78.html > https://en.t-firefly.com/doc/download/page/id/127.html > > So, the Roc PC, Roc PC Plus and Roc PC Pro all seem to have a similar > routing for this pin, therefore: > > Reviewed-by: Quentin Schulz <quentin.sch...@cherry.de> Right, and for the record the version I have is the ROC-RK3399-PC Plus. Thanks! -- 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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