linux-kernel - Re: [IMX] [DRM]: suspend/resume support

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Message-ID: <CAOMZO5BsJWTw0nCeUboam4kuKyCO3N_Ch5ZW8k5Y9KFtQBanhQ@mail.gmail.com>
Date:   Wed, 19 Jun 2019 12:11:50 -0300
From:   Fabio Estevam <festevam@...il.com>
To:     Pintu Agarwal <pintu.ping@...il.com>
Cc:     open list <linux-kernel@...r.kernel.org>,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        Kernelnewbies <kernelnewbies@...nelnewbies.org>,
        linux-pm@...r.kernel.org
Subject: Re: [IMX] [DRM]: suspend/resume support

On Wed, Jun 19, 2019 at 12:05 PM Pintu Agarwal <pintu.ping@...il.com> wrote:

> Okay. I will surely try it on another IMX6 fresh board.
> With 5.1.11 you mean the kernel from mainline kernel.org
> Or, is there a separate kernel repo for imx6. If yes, please let me know.

5.1.11 from kernel.org

> > Then you can test suspend/resume and see if HDMI hangs or not.
> >
> By this suspend/resume, you mean "suspend-to-ram" or "suspend-to-disk" ?

I tested with "echo mem > /sys/power/state"

> This scenario is not with suspend/resume.
> This hang is, when we make hdmi as a loadable module (.ko) and trying
> to install it after resume.
> In this case, suspend/resume will not come into picture. Not sure why
> it still hangs.
> Do you have any clue for this scenario?

I haven't tried this one.

Please test it with 5.1.11 and if it fails, please report.