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From: Sumit Gupta <sumitg@nvidia.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>,
	<treding@nvidia.com>, <dmitry.osipenko@collabora.com>,
	<viresh.kumar@linaro.org>, <rafael@kernel.org>,
	<jonathanh@nvidia.com>, <robh+dt@kernel.org>,
	<lpieralisi@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>, Sumit Gupta <sumitg@nvidia.com>
Subject: Re: [Patch v2 0/9] Tegra234 Memory interconnect support
Date: Tue, 7 Mar 2023 01:49:17 +0530	[thread overview]
Message-ID: <beb3ce07-b431-11e9-744e-bb632c2069db@nvidia.com> (raw)
In-Reply-To: <c8cf2435-8b18-7af7-c751-267021142f5a@linaro.org>



On 06/03/23 20:35, Krzysztof Kozlowski wrote:
> External email: Use caution opening links or attachments
> 
> 
> On 20/02/2023 15:05, Sumit Gupta wrote:
>> This patch series adds memory interconnect support for Tegra234 SoC.
>> It is used to dynamically scale DRAM Frequency as per the bandwidth
>> requests from different Memory Controller (MC) clients.
>> MC Clients use ICC Framework's icc_set_bw() api to dynamically request
>> for the DRAM bandwidth (BW). As per path, the request will be routed
>> from MC to the EMC driver. MC driver passes the request info like the
>> Client ID, type, and frequency request info to the BPMP-FW which will
>> set the final DRAM freq considering all exisiting requests.
>>
>> MC and EMC are the ICC providers. Nodes in path for a request will be:
>>       Client[1-n] -> MC -> EMC -> EMEM/DRAM
>>
>> The patch series also adds interconnect support in below client drivers:
>> 1) CPUFREQ driver for scaling bandwidth with CPU frequency. For that,
>>     added per cluster OPP table which will be used in the CPUFREQ driver
>>     by requesting the minimum BW respective to the given CPU frequency in
>>     the OPP table of given cluster.
>> 2) PCIE driver to request BW required for different modes.
> 
> No dependencies or ordering written, so I am free to take memory
> controller bits, I assume.
> 
> Best regards,
> Krzysztof
> 

Apologies for not mentioning the order in cover letter. The patches are 
divided into below groups.
  Patch [9]: Memory Interconnect support in PCI (MC client)
  Patch [4-8]: Memory Interconnect support in CPUFREQ (MC client)
  Patch [1-3]: Memory Interconnect base support

Both the Memory Controller (MC) client patches are dependent on the 
'Memory Interconnect base support patch [1-3]'.

Thanks,
Sumit

      parent reply	other threads:[~2023-03-06 20:20 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-02-20 14:05 [Patch v2 0/9] Tegra234 Memory interconnect support Sumit Gupta
2023-02-20 14:05 ` [Patch v2 1/9] firmware: tegra: add function to get BPMP data Sumit Gupta
2023-02-20 14:05 ` [Patch v2 2/9] memory: tegra: add interconnect support for DRAM scaling in Tegra234 Sumit Gupta
2023-03-19 15:19   ` Krzysztof Kozlowski
2023-02-20 14:05 ` [Patch v2 3/9] memory: tegra: add mc clients for Tegra234 Sumit Gupta
2023-03-19 15:19   ` Krzysztof Kozlowski
2023-02-20 14:05 ` [Patch v2 4/9] memory: tegra: add software mc clients in Tegra234 Sumit Gupta
2023-03-19 15:19   ` Krzysztof Kozlowski
2023-02-20 14:05 ` [Patch v2 5/9] dt-bindings: tegra: add icc ids for dummy MC clients Sumit Gupta
2023-02-20 14:05 ` [Patch v2 6/9] arm64: tegra: Add cpu OPP tables and interconnects property Sumit Gupta
2023-02-20 14:05 ` [Patch v2 7/9] cpufreq: tegra194: add OPP support and set bandwidth Sumit Gupta
2023-02-22  4:03   ` Viresh Kumar
2023-02-23  9:36     ` Sumit Gupta
2023-02-27 12:44       ` Thierry Reding
2023-02-28  1:18         ` Viresh Kumar
2023-02-20 14:05 ` [Patch v2 8/9] memory: tegra: make cpu cluster bw request a multiple of mc channels Sumit Gupta
2023-03-19 15:20   ` Krzysztof Kozlowski
2023-02-20 14:05 ` [Patch v2 9/9] PCI: tegra194: add interconnect support in Tegra234 Sumit Gupta
2023-03-06 15:05 ` [Patch v2 0/9] Tegra234 Memory interconnect support Krzysztof Kozlowski
2023-03-06 15:07   ` Krzysztof Kozlowski
2023-03-06 20:43     ` Sumit Gupta
2023-03-07  9:21       ` Krzysztof Kozlowski
2023-03-06 20:19   ` Sumit Gupta [this message]

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