linux-kernel - Re: [PATCH v4 0/6] staging: media: wave5: add wave5 codec driver

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Date:   Mon, 13 Dec 2021 22:27:00 +0200
From:   Dafna Hirschfeld <dafna.hirschfeld@...labora.com>
To:     Daniel Palmer <daniel@...f.com>
Cc:     "open list:MEDIA INPUT INFRASTRUCTURE (V4L/DVB)" 
        <linux-media@...r.kernel.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "open list:STAGING SUBSYSTEM" <linux-staging@...ts.linux.dev>,
        open list <linux-kernel@...r.kernel.org>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        hverkuil@...all.nl, kernel@...labora.com, dafna3@...il.com,
        Robert Beckett <bob.beckett@...labora.com>,
        kiril.bicevski@...labora.com,
        Nas Chung <nas.chung@...psnmedia.com>,
        lafley.kim@...psnmedia.com, scott.woo@...psnmedia.com,
        olivier.crete@...labora.com, dan.carpenter@...cle.com,
        Randy Dunlap <rdunlap@...radead.org>
Subject: Re: [PATCH v4 0/6] staging: media: wave5: add wave5 codec driver



On 02.12.21 12:11, Daniel Palmer wrote:
> Hi Dafna,
> 
> On Thu, 2 Dec 2021 at 02:56, Dafna Hirschfeld
> <dafna.hirschfeld@...labora.com> wrote:
>> Testing on BeagleV shows buffer corruption that is currently attributed to a
>> known silicon issue in the SoC that makes the cache coherent interconnect not
>> so coherent.
> 
> Maybe it's mentioned somewhere else and I missed it but would it be
> possible to tell me which version of the IP is in the BeagleV chip?
> The reason I ask is I'm trying to get this going on the SigmaStar
> SSD202D which seems to have the "Wave 511".
> I can see the firmware binary get uploaded and it seems to do
> something as the register that exposes the vcpu program counter is
> doing something (and the addresses look the same as the addresses seem
> when the working vendor kernel + binary .ko are running so I think
> it's not just running garbage).
> 
> I'm wondering if the BeagleV is a different version and the driver
> just won't work as is on mine or maybe the firmware I have has hacks
> for the vendors version of the driver which I don't have source for.

Hi, thank you for trying this out. The versions I see on the Beaglv are 511 for the
decoder and 521c for the encoder.
This driver is also based on a vendor driver from cnm: https://gitlab.collabora.com/chipsnmedia/wave5-driver
Also, a patch to add the firmware was also sent to linux-firmware ml https://lore.kernel.org/linux-firmware/20211126093014.1385752-1-nas.chung@chipsnmedia.com/T/

Thanks,
Dafna

> 
> Thanks,
> 
> Daniel
>