linux-kernel - Re: [PATCH V3 0/9] arm64: imx8mn: Enable more imx8m Nano functions

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Message-ID: <CAHCN7xKpjVWiTvXpYH11kaHX=0Figh=ALQS4qnUroGCu-q3NNA@mail.gmail.com>
Date:   Sun, 21 Nov 2021 09:25:19 -0600
From:   Adam Ford <aford173@...il.com>
To:     Fabio Estevam <festevam@...il.com>
Cc:     Tim Harvey <tharvey@...eworks.com>,
        Linux ARM Mailing List <linux-arm-kernel@...ts.infradead.org>,
        Adam Ford-BE <aford@...conembedded.com>,
        "Ariel D'Alessandro" <ariel.dalessandro@...labora.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Lucas Stach <l.stach@...gutronix.de>,
        Device Tree Mailing List <devicetree@...r.kernel.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        NXP Linux Team <linux-imx@....com>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH V3 0/9] arm64: imx8mn: Enable more imx8m Nano functions

On Sun, Nov 21, 2021 at 8:34 AM Adam Ford <aford173@...il.com> wrote:
>
> On Sun, Nov 21, 2021 at 8:21 AM Fabio Estevam <festevam@...il.com> wrote:
> >
> > Hi Adam,
> >
> > On Sun, Nov 21, 2021 at 11:17 AM Adam Ford <aford173@...il.com> wrote:
> >
> > > I am using https://source.codeaurora.org/external/imx/imx-atf/log/?h=lf_v2.4
> > >
> > > Since the driver sending SMCC commands to ATF isn't doing that, I
> > > assume it's safe to use the linux power-domain drivers with the ATF
> > > from NXP's kernel.
> > >
> > > If you can point me to the repo you think I should be using, I'll give it a try.
> >
> > Do you know if the mainline TF-A repo v2.5 works too?
> > https://github.com/ARM-software/arm-trusted-firmware/tree/v2.5
>
> That's good to know.
>
> I just built it into U-Boot:
>
> NOTICE:  BL31: v2.5(release):v2.5
> NOTICE:  BL31: Built : 08:24:13, Nov 21 2021
>
> The Etnaviv driver is still loading without hanging
>
> root@...con-imx8mn-kit:~# dmesg |grep -i etna
> [   12.393936] etnaviv etnaviv: bound 38000000.gpu (ops gpu_ops [etnaviv])
> [   12.400676] etnaviv-gpu 38000000.gpu: model: GC7000, revision: 6203
> [   12.641297] [drm] Initialized etnaviv 1.3.0 20151214 for etnaviv on minor 0
>
>

Tim,

Which version of Nano do you have?  Not all Nano SoC's have a GPU from
looking at the datasheet [1] .  I am using MIMX8MN2CVTIZAA (Nano Solo)

[1] - https://www.nxp.com/docs/en/data-sheet/IMX8MNIEC.pdf

adam

>
> >
> > Thanks