From: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
To: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: schowdhu@codeaurora.org, Rob Herring <robh+dt@kernel.org>,
Andy Gross <agross@kernel.org>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
devicetree@vger.kernel.org, sibis@codeaurora.org,
Rajendra Nayak <rnayak@codeaurora.org>,
vkoul@kernel.org
Subject: Re: [PATCH V1 2/6] soc: qcom: dcc: Add driver support for Data Capture and Compare unit(DCC)
Date: Mon, 15 Mar 2021 00:49:03 +0530 [thread overview]
Message-ID: <d7af44c2f9be4b50136b61ca39a814eb@codeaurora.org> (raw)
In-Reply-To: <YEpGf7kQS53pByqC@builder.lan>
On 2021-03-11 22:04, Bjorn Andersson wrote:
> On Thu 11 Mar 04:06 CST 2021, schowdhu@codeaurora.org wrote:
>
>> On 2021-03-11 04:49, Bjorn Andersson wrote:
>> > On Wed 10 Mar 10:46 CST 2021, Souradeep Chowdhury wrote:
>> >
>> > > The DCC is a DMA Engine designed to capture and store data
>> > > during system crash or software triggers. The DCC operates
>> > > based on link list entries which provides it with data and
>> > > addresses and the function it needs to perform. These
>> > > functions are read, write and loop. Added the basic driver
>> > > in this patch which contains a probe method which instantiates
>> > > the resources needed by the driver. DCC has it's own SRAM which
>> > > needs to be instantiated at probe time as well.
>> > >
>> >
>> > So to summarize, the DCC will upon a crash copy the configured region
>> > into the dcc-ram, where it can be retrieved either by dumping the memory
>> > over USB or from sysfs on the next boot?
>>
>> Replied by Sai
>>
>
> Thanks Souradeep and Sai, I'm definitely interested in learning more
> about what the hardware block can do and how we can use it.
>
Thanks Bjorn, hopefully example in the other thread provides some good
view of the capability of DCC. Please let us know if you need any more
details.
Thanks,
Sai
--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a
member
of Code Aurora Forum, hosted by The Linux Foundation
next prev parent reply other threads:[~2021-03-14 19:19 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-10 16:46 [PATCH V1 0/6] Add driver support for Data Capture and Compare Engine(DCC) for SM8150 Souradeep Chowdhury
2021-03-10 16:46 ` [PATCH V1 1/6] dt-bindings: Added the yaml bindings for DCC Souradeep Chowdhury
2021-03-10 20:22 ` Bjorn Andersson
2021-03-10 16:46 ` [PATCH V1 2/6] soc: qcom: dcc: Add driver support for Data Capture and Compare unit(DCC) Souradeep Chowdhury
2021-03-10 23:19 ` Bjorn Andersson
2021-03-11 6:19 ` Sai Prakash Ranjan
2021-03-11 16:31 ` Bjorn Andersson
2021-03-14 18:59 ` Sai Prakash Ranjan
2021-03-11 10:06 ` schowdhu
2021-03-11 16:34 ` Bjorn Andersson
2021-03-14 19:19 ` Sai Prakash Ranjan [this message]
2021-03-10 16:46 ` [PATCH V1 3/6] soc: qcom: dcc: Add the sysfs variables to the Data Capture and Compare driver(DCC) Souradeep Chowdhury
2021-03-10 16:46 ` [PATCH V1 4/6] DCC: Added the sysfs entries for DCC(Data Capture and Compare) driver Souradeep Chowdhury
2021-03-10 23:28 ` Bjorn Andersson
2021-03-11 10:45 ` schowdhu
2021-03-10 16:46 ` [PATCH V1 5/6] MAINTAINERS: Add the entry for DCC(Data Capture and Compare) driver support Souradeep Chowdhury
2021-03-10 16:46 ` [PATCH V1 6/6] arm64: dts: qcom: sm8150: Add Data Capture and Compare(DCC) support node Souradeep Chowdhury
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