linux-kernel - Re: [PATCH] ARM: dts: bcm283x: Use firmware PM driver for V3D

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Message-ID: <9e685fce547d808f269e59e2290331e75c66f3e4.camel@suse.de>
Date:   Mon, 09 Mar 2020 20:22:45 +0100
From:   Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
To:     Stefan Wahren <stefan.wahren@...e.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        bcm-kernel-feedback-list@...adcom.com,
        Eric Anholt <eric@...olt.net>
Cc:     devicetree@...r.kernel.org, linux-rpi-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        wahrenst@....net
Subject: Re: [PATCH] ARM: dts: bcm283x: Use firmware PM driver for V3D

Hi Stefan,

On Mon, 2020-03-09 at 16:41 +0100, Stefan Wahren wrote:
> Hi Nicolas,
> 
> On 06.03.20 21:33, Stefan Wahren wrote:
> > Hi Nicolas,
> > 
> > Am 05.03.20 um 11:44 schrieb Nicolas Saenz Julienne:
> > > Hi Stefan,
> > > 
> > > On Tue, 2020-03-03 at 20:24 +0100, Stefan Wahren wrote:
> > > > > > > Note: I tested this on RPi3b, RPi3a+ and RPi2b.
> > > > > > as i already wrote this prevent X to start on current Raspbian on my
> > > > > > Raspberry Pi 3A+ (multi_v7_defconfig, no u-boot). We must be careful
> > > > > > here.
> > > > > > 
> > > > > > I will take a look at the debug UART. Maybe there are more helpful
> > > > > > information.
> > > > > It seems we're seeing different things, I tested this on raspbian
> > > > > (multi_v7_defconfig) and on arm64. I'll try again from scratch
> > > > > tomorrow.
> > > > My modifications to the Raspbian image (from 13.2.2020) are little:
> > > > 
> > > > - specify devicetree to config.txt
> > > > - change console to ttyS1 and remove "silent" in cmdline.txt
> > > > - rename all original kernel7*.img
> > > > - copy dtb and kernel7.img to boot partition
> > > > - copy kernel modules to root partition
> > > Would you mind retesting with the latest linux-next? I validated an image
> > > based
> > > on 5.6.0-rc4-next-20200305-00001-g285a7a64cd56 and a fresh raspbian
> > > download on
> > > RPi3a+ without X issues.
> > i retested with todays linux-next and the issue persists on my RPi 3A+ /
> > HP ZR2440w with this patch applied.
> 
> I tested my display with a RPI 3B, 3B+ and a Zero W. All of them had the
> same issue. Btw i used this display the last years for testing the
> Raspberry Pi.
> 
> After that i connected the RPI 3B to my TV screen and it works with the
> patch applied.

Thanks for taking the time on this. I guess all we have left is looking deeper
into it. I'll add it to my backlog for now.

Regards,
Nicolas


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