linux-kernel - [PATCH V7 0/2] firmware: Add support for boot

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Date:   Wed, 5 Jul 2023 11:02:30 +0530
From:   Souradeep Chowdhury <quic_schowdhu@...cinc.com>
To:     Andy Gross <agross@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>, Arnd Bergmann <arnd@...db.de>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
        <devicetree@...r.kernel.org>, Sibi Sankar <quic_sibis@...cinc.com>,
        Rajendra Nayak <quic_rjendra@...cinc.com>,
        Souradeep Chowdhury <quic_schowdhu@...cinc.com>
Subject: [PATCH V7 0/2] firmware: Add support for boot_stats

Qualcomm's proprietary Android boot-loaders capture boot time
stats, like the time when the bootloader started execution and at what
point the bootloader handed over control to the kernel etc. in the IMEM
region. This information is captured by the bootloader and populated on
the device tree properties "pre-abl-time" and "abl-time" which can be
be viewed from the user space like as follows:-

/sys/firmware/devicetree/base/bootstats # cat abl_time
17898

As a part of this patch series added the bindings for boot-stats which
was suggested in the v6 of the series. The link for the same is as
follows:-

https://lore.kernel.org/linux-arm-kernel/7d397e67-5d56-4975-98af-1ac9746c07f4@app.fastmail.com/

Souradeep Chowdhury (2):
  dt-bindings: firmware: bootstats: Add the dtschema
  MAINTAINERS: Add the entry for boot_stats support

 .../bindings/firmware/qcom,bootstats.yaml     | 38 +++++++++++++++++++
 MAINTAINERS                                   |  6 +++
 2 files changed, 44 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/firmware/qcom,bootstats.yaml

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2.17.1