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Message-ID: <226964d1-4c98-73a5-ccd1-6b718897fcc8@linaro.org>
Date:   Tue, 16 May 2023 09:42:22 +0200
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Subject: Re: [Patch v8 1/8] memory: tegra: add interconnect support for DRAM
 scaling in Tegra234
Content-Language: en-US
To:     Sumit Gupta <sumitg@nvidia.com>, treding@nvidia.com,
        dmitry.osipenko@collabora.com, viresh.kumar@linaro.org,
        rafael@kernel.org, jonathanh@nvidia.com, robh+dt@kernel.org,
        lpieralisi@kernel.org, helgaas@kernel.org
Cc:     linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org,
        linux-pm@vger.kernel.org, devicetree@vger.kernel.org,
        linux-pci@vger.kernel.org, mmaddireddy@nvidia.com, kw@linux.com,
        bhelgaas@google.com, vidyas@nvidia.com, sanjayc@nvidia.com,
        ksitaraman@nvidia.com, ishah@nvidia.com, bbasu@nvidia.com
References: <20230511173211.9127-1-sumitg@nvidia.com>
 <20230511173211.9127-2-sumitg@nvidia.com>
From:   Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
In-Reply-To: <20230511173211.9127-2-sumitg@nvidia.com>
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On 11/05/2023 19:32, Sumit Gupta wrote:
> Add Interconnect framework support to dynamically set the DRAM
> bandwidth from different clients. Both the MC and EMC drivers are
> added as ICC providers. The path for any request is:
>  MC-Client[1-n] -> MC -> EMC -> EMEM/DRAM
> 
> MC client's request for bandwidth will go to the MC driver which
> passes the client request info like BPMP Client ID, Client type
> and the Bandwidth to the BPMP-FW. The final DRAM freq to achieve
> the requested bandwidth is set by the BPMP-FW based on the passed
> parameters.
> 
> Signed-off-by: Sumit Gupta <sumitg@nvidia.com>
> ---
>  drivers/memory/tegra/mc.c           |   5 +
>  drivers/memory/tegra/tegra186-emc.c | 133 +++++++++++++++++++++++++++
>  drivers/memory/tegra/tegra234.c     | 138 +++++++++++++++++++++++++++-
>  include/linux/tegra-icc.h           |  65 +++++++++++++
>  include/soc/tegra/mc.h              |   7 ++

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Best regards,
Krzysztof