linux-kernel - Re: [PATCH] arm64: dts: mediatek: mt8188-geralt: Enable first SCP core

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <CAGXv+5FF5ZfOVP1qQh7s0sw9z4SXY6Rh8kS+8HcTxNY1gQ_kJg@mail.gmail.com>
Date: Thu, 14 Aug 2025 17:23:14 +0800
From: Chen-Yu Tsai <wenst@...omium.org>
To: Fei Shao <fshao@...omium.org>
Cc: Matthias Brugger <matthias.bgg@...il.com>, 
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, 
	linux-mediatek@...ts.infradead.org, linux-arm-kernel@...ts.infradead.org, 
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH] arm64: dts: mediatek: mt8188-geralt: Enable first SCP core

On Wed, Aug 13, 2025 at 6:03 PM Fei Shao <fshao@...omium.org> wrote:
>
> On Tue, Aug 12, 2025 at 8:39 PM Chen-Yu Tsai <wenst@...omium.org> wrote:
> >
> > The first SCP core is used to drive the video decoder and encoders.
> >
> > Signed-off-by: Chen-Yu Tsai <wenst@...omium.org>
> > ---
> >  arch/arm64/boot/dts/mediatek/mt8188-geralt.dtsi | 16 ++++++++++++++++
> >  1 file changed, 16 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/mediatek/mt8188-geralt.dtsi b/arch/arm64/boot/dts/mediatek/mt8188-geralt.dtsi
> > index c5254ae0bb99..10764786bc21 100644
> > --- a/arch/arm64/boot/dts/mediatek/mt8188-geralt.dtsi
> > +++ b/arch/arm64/boot/dts/mediatek/mt8188-geralt.dtsi
> > @@ -164,6 +164,12 @@ reserved_memory: reserved-memory {
> >                 #size-cells = <2>;
> >                 ranges;
> >
> > +               scp_mem_reserved: memory@...00000 {
> > +                       compatible = "shared-dma-pool";
> > +                       reg = <0 0x50000000 0 0x800000>;
> > +                       no-map;
> > +               };
> > +
> >                 apu_mem: memory@...00000 {
> >                         compatible = "shared-dma-pool";
> >                         reg = <0 0x55000000 0 0x1400000>;
> > @@ -1146,6 +1152,16 @@ &postmask0_out {
> >         remote-endpoint = <&dither0_in>;
> >  };
> >
> > +&scp_cluster {
> > +       status = "okay";
> > +};
> > +
> > +&scp_c0 {
> > +       firmware-name = "mediatek/mt8188/scp.img";
> > +       memory-region = <&scp_mem_reserved>;
>
> It looks like a pinctrl for SCP_VREQ_VAO (GPIO 98) is missing?
> Datasheet says it's for "SCP to PMIC normal voltage request", and
> MT8195 and MT8192 also have that configured.

You are right. Will send v2.

> Regards,
> Fei
>
> > +       status = "okay";
> > +};
> > +
> >  &sound {
> >         pinctrl-names = "aud_etdm_hp_on", "aud_etdm_hp_off",
> >                         "aud_etdm_spk_on", "aud_etdm_spk_off",
> > --
> > 2.51.0.rc0.215.g125493bb4a-goog
> >
> >