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

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Message-ID: <ee3073ba-d621-8b02-c986-3cf44cfbba96@nvidia.com>
Date:   Fri, 4 Nov 2022 15:33:20 +0000
From:   Jon Hunter <jonathanh@...dia.com>
To:     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

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?

Thanks!
Jon

-- 
nvpublic