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

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Date:   Fri, 4 Nov 2022 16:01:48 +0000
From:   Jon Hunter <jonathanh@...dia.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        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 15:48, Krzysztof Kozlowski wrote:
> 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?


No. Like I said I just want to get this into -next for testing. I had 
_wrongly_ assumed that Thierry was waiting on feedback from you. I see 
this is not the case and so let me check with Thierry where this is.

Jon

-- 
nvpublic