linux-kernel - [PATCH v1] cpufreq: mediatek-hw: Add support for Mediatek cpufreq HW driver

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Message-ID: <1597302475-15484-1-git-send-email-hector.yuan@mediatek.com>
Date:   Thu, 13 Aug 2020 15:07:53 +0800
From:   Hector Yuan <hector.yuan@...iatek.com>
To:     <linux-mediatek@...ts.infradead.org>,
        <linux-arm-kernel@...ts.infradead.org>, <linux-pm@...r.kernel.org>,
        <devicetree@...r.kernel.org>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Shawn Guo <shawnguo@...nel.org>, Li Yang <leoyang.li@....com>,
        Vinod Koul <vkoul@...nel.org>, Arnd Bergmann <arnd@...db.de>,
        Anson Huang <Anson.Huang@....com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Olof Johansson <olof@...om.net>
CC:     <linux-kernel@...r.kernel.org>, <wsd_upstream@...iatek.com>,
        <hector.yuan@...iatek.com>
Subject: [PATCH v1] cpufreq: mediatek-hw: Add support for Mediatek cpufreq HW driver

The CPUfreq HW present in some Mediatek chipsets offloads
the steps necessary for changing the frequency of CPUs.
The driver implements the cpufreq driver interface for
this hardware engine. 

This patch depends on the MT6779 DTS patch submitted by Hanks Chen
 https://lkml.org/lkml/2020/8/4/1094


Hector.Yuan (2):
  dt-bindings: cpufreq: add bindings for MediaTek cpufreq HW
  cpufreq: mediatek-hw: Add support for Mediatek cpufreq HW driver

 .../bindings/cpufreq/cpufreq-mediatek-hw.yaml      |   61 +++++
 arch/arm64/configs/defconfig                       |    1 +
 drivers/cpufreq/Kconfig.arm                        |   11 +
 drivers/cpufreq/Makefile                           |    1 +
 drivers/cpufreq/mediatek-cpufreq-hw.c              |  255 ++++++++++++++++++++
 5 files changed, 329 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek-hw.yaml
 create mode 100644 drivers/cpufreq/mediatek-cpufreq-hw.c