linux-kernel - Re: [PATCH v3 1/8] memory: tegra: Add API for retrieving carveout bounds

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Message-ID: <a72c0e60-732f-3486-722e-851f21ebe640@linaro.org>
Date:   Fri, 4 Nov 2022 11:48:20 -0400
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Jon Hunter <jonathanh@...dia.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Mikko Perttunen <cyndis@...si.fi>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Cc:     David Airlie <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Mikko Perttunen <mperttunen@...dia.com>,
        Ashish Mhetre <amhetre@...dia.com>,
        Sameer Pujar <spujar@...dia.com>,
        dri-devel@...ts.freedesktop.org, linux-tegra@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/8] memory: tegra: Add API for retrieving carveout
 bounds

On 04/11/2022 11:46, Jon Hunter wrote:
> 
> On 04/11/2022 15:35, Krzysztof Kozlowski wrote:
>> On 04/11/2022 11:33, Jon Hunter wrote:
>>> Hi Thierry, Krzysztof,
>>>
>>> On 24/10/2022 14:15, Thierry Reding wrote:
>>>> On Tue, Sep 20, 2022 at 11:11:56AM +0300, Mikko Perttunen wrote:
>>>>> From: Mikko Perttunen <mperttunen@...dia.com>
>>>>>
>>>>> On Tegra234 NVDEC firmware is loaded from a secure carveout, where it
>>>>> has been loaded by a bootloader. When booting NVDEC, we need to tell it
>>>>> the address of this firmware, which we can determine by checking the
>>>>> starting address of the carveout. As such, add an MC API to query the
>>>>> bounds of carveouts, and add related information on Tegra234.
>>>>>
>>>>> Signed-off-by: Mikko Perttunen <mperttunen@...dia.com>
>>>>> ---
>>>>> v2:
>>>>> - Add check for 64-bit phys_addr_t. In practice phys_addr_t
>>>>>     is always 64 bits where this runs, but it avoids warnings in
>>>>>     compile test.
>>>>> ---
>>>>>    drivers/memory/tegra/mc.c       | 25 +++++++++++++++++++++++++
>>>>>    drivers/memory/tegra/tegra234.c |  5 +++++
>>>>>    include/soc/tegra/mc.h          | 11 +++++++++++
>>>>>    3 files changed, 41 insertions(+)
>>>>
>>>> Krzysztof,
>>>>
>>>> I've applied this to the same tree as the patch that uses it for now.
>>>> Let me know if you want me to put this on a separate stable branch for
>>>> you to pull in.
>>>
>>> Any update on this?
>>
>> What kind of update do you expect?
> 
> Ha! I guess I should be more explicit :-)
> 
> Well, I would like to see this change in -next and so I was hoping that 
> you would respond to the above to indicate how you would like to pull 
> this in.

The change will be in next via Thierry. I do not have to pull this in.

The maintainer which applies patches is responsible for:
1. Having his tree in linux-next,
2. Sending the patches to upstream maintainer (e.g. arm-soc, Linus)
later in pull request.

There is no job for me here, if I agree with Thierry. There would be a
job if I needed a separate stable branch, but that I did not decide
yet... Do you think I need to pull it? If so, why?

Best regards,
Krzysztof