linux-kernel - Re: [PATCH] arm64: dts: qcom: sdm850-yoga: Enable IPA

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Date:   Fri, 17 Sep 2021 01:40:03 +0530
From:   Amit Pundir <amit.pundir@...aro.org>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     Andy Gross <agross@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        Alex Elder <elder@...aro.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        dt <devicetree@...r.kernel.org>,
        lkml <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] arm64: dts: qcom: sdm850-yoga: Enable IPA

On Thu, 16 Sept 2021 at 20:27, Bjorn Andersson
<bjorn.andersson@...aro.org> wrote:
>
> On Thu 16 Sep 03:52 PDT 2021, Amit Pundir wrote:
>
> > Hi Bjorn,
> >
> > On Wed, 16 Jun 2021 at 04:58, Bjorn Andersson
> > <bjorn.andersson@...aro.org> wrote:
> > >
> > > Shuffle memory regions to make firmware loading succeed and then enable
> > > the ipa device.
> >
> > Just a heads-up, this reserved memory region shuffling in sdm845.dtsi
> > broke PocoF1 and may be other devices too(?) which do not override
> > these regions.
> >
>
> Thanks for the report!
>
> > IIRC you once had a patch to move the reserved memory regions to board
> > specific dts files, is it still on the cards so that we don't run into
> > breakages like this?
> >
>
> As you might remember the feedback I got was to not move the regions to
> the individual devices and it was better to just deal with the problem
> this way...
>
> But apparently I was too optimistic and should have played the usual
> game of deleting the inherited nodes and made the changes in the yoga
> dts...
>
> > Meanwhile I'll go and add these regions in sdm845-xiaomi-beryllium.dts.
> >
>
> Let's prepare a fix that moves this change into the yoga.dts and get
> that landed asap.

Done https://patchwork.kernel.org/project/linux-arm-msm/patch/20210916200554.2434439-1-amit.pundir@linaro.org/

Smoke tested on PocoF1 only.

>
> Regards,
> Bjorn
>
> > Regards,
> > Amit Pundir
> >
> >
> >
> > >
> > > Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
> > > ---
> > >  arch/arm64/boot/dts/qcom/sdm845.dtsi          | 21 +++++++------------
> > >  .../boot/dts/qcom/sdm850-lenovo-yoga-c630.dts |  5 +++++
> > >  2 files changed, 13 insertions(+), 13 deletions(-)
> > >
> > > diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi
> > > index 1796ae8372be..49624eadce84 100644
> > > --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi
> > > +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi
> > > @@ -128,28 +128,23 @@ camera_mem: memory@...00000 {
> > >                         no-map;
> > >                 };
> > >
> > > -               ipa_fw_mem: memory@...00000 {
> > > -                       reg = <0 0x8c400000 0 0x10000>;
> > > +               wlan_msa_mem: memory@...00000 {
> > > +                       reg = <0 0x8c400000 0 0x100000>;
> > >                         no-map;
> > >                 };
> > >
> > > -               ipa_gsi_mem: memory@...10000 {
> > > -                       reg = <0 0x8c410000 0 0x5000>;
> > > +               gpu_mem: memory@...15000 {
> > > +                       reg = <0 0x8c515000 0 0x2000>;
> > >                         no-map;
> > >                 };
> > >
> > > -               gpu_mem: memory@...15000 {
> > > -                       reg = <0 0x8c415000 0 0x2000>;
> > > +               ipa_fw_mem: memory@...17000 {
> > > +                       reg = <0 0x8c517000 0 0x5a000>;
> > >                         no-map;
> > >                 };
> > >
> > > -               adsp_mem: memory@...00000 {
> > > -                       reg = <0 0x8c500000 0 0x1a00000>;
> > > -                       no-map;
> > > -               };
> > > -
> > > -               wlan_msa_mem: memory@...00000 {
> > > -                       reg = <0 0x8df00000 0 0x100000>;
> > > +               adsp_mem: memory@...00000 {
> > > +                       reg = <0 0x8c600000 0 0x1a00000>;
> > >                         no-map;
> > >                 };
> > >
> > > diff --git a/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts b/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts
> > > index c2a709a384e9..3eaa42dc3794 100644
> > > --- a/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts
> > > +++ b/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts
> > > @@ -415,6 +415,11 @@ ecsh: hid@5c {
> > >         };
> > >  };
> > >
> > > +&ipa {
> > > +       status = "okay";
> > > +       memory-region = <&ipa_fw_mem>;
> > > +};
> > > +
> > >  &mdss {
> > >         status = "okay";
> > >  };
> > > --
> > > 2.31.0
> > >