| From: |
| Leonard Crestez <leonard.crestez-AT-nxp.com> |
| To: |
| Georgi Djakov <georgi.djakov-AT-linaro.org>, Rob Herring <robh+dt-AT-kernel.org>, Artur Świgoń <a.swigon-AT-partner.samsung.com>, Chanwoo Choi <cw00.choi-AT-samsung.com> |
| Subject: |
| [RFCv4 0/7] interconnect: Add imx support via devfreq |
| Date: |
| Fri, 23 Aug 2019 17:36:53 +0300 |
| Message-ID: |
| <cover.1566570260.git.leonard.crestez@nxp.com> |
| Cc: |
| Alexandre Bailon <abailon-AT-baylibre.com>, Krzysztof Kozlowski <krzk-AT-kernel.org>, MyungJoo Ham <myungjoo.ham-AT-samsung.com>, Kyungmin Park <kyungmin.park-AT-samsung.com>, Saravana Kannan <saravanak-AT-google.com>, Mark Rutland <mark.rutland-AT-arm.com>, Viresh Kumar <viresh.kumar-AT-linaro.org>, Shawn Guo <shawnguo-AT-kernel.org>, Dong Aisheng <aisheng.dong-AT-nxp.com>, Fabio Estevam <fabio.estevam-AT-nxp.com>, Stephen Boyd <sboyd-AT-kernel.org>, Michael Turquette <mturquette-AT-baylibre.com>, kernel-AT-pengutronix.de, linux-imx-AT-nxp.com, linux-pm-AT-vger.kernel.org, devicetree-AT-vger.kernel.org, linux-arm-kernel-AT-lists.infradead.org |
| Archive-link: |
| Article |
This series add imx support for interconnect via devfreq: the ICC
framework is used to aggregate requests from devices and then those are
converted to DEV_PM_QOS_MIN_FREQUENCY requests for devfreq.
The devfreq parts are posted separately, this series only intersects in
devicetree: https://patchwork.kernel.org/cover/11104113/
Since there is no single devicetree node that can represent the "interconnect"
new API is added to allow individual devfreq nodes to act as parsing proxies
all mapping to a single soc-level icc provider. This is still RFC
because this
The rest of the changes are small and deal with review comments.
Changes since RFCv3:
* Remove the virtual "icc" node and add devfreq nodes as proxy providers
* Fix build on 32-bit arm (reported by kbuilt test robot)
* Remove ARCH_MXC_ARM64 (never existed in upstream)
* Remove _numlinks, calculate instead
* Replace __BUSFREQ_H header guard
* Improve commit message and comment spelling
* Fix checkpatch issues
Link to RFCv3: https://patchwork.kernel.org/cover/11078671/
Changes since RFCv2 and initial work by Alexandre Bailon:
* Relying on devfreq and dev_pm_qos instead of CLK
* No more "platform opp" stuff
* No more special suspend handling: use suspend-opp on devfreq instead.
* Replace all mentions of "busfreq" with "interconnect"
Link to v2: https://patchwork.kernel.org/patch/11056789/
Leonard Crestez (7):
PM / devfreq: Add devfreq_get_devfreq_by_node
interconnect: Add of_icc_add_proxy
dt-bindings: devfreq: imx: Describe interconnect properties
interconnect: Add imx core driver
interconnect: imx: Add platform driver for imx8mm
soc: imx8mm: Register interconnect platform device
arm64: dts: imx8mm: Add interconnect properties
.../devicetree/bindings/devfreq/imx-ddrc.yaml | 5 +
.../devicetree/bindings/devfreq/imx.yaml | 5 +
arch/arm64/boot/dts/freescale/imx8mm.dtsi | 5 +
drivers/devfreq/devfreq.c | 42 ++-
drivers/interconnect/Kconfig | 1 +
drivers/interconnect/Makefile | 1 +
drivers/interconnect/core.c | 88 +++++-
drivers/interconnect/imx/Kconfig | 9 +
drivers/interconnect/imx/Makefile | 2 +
drivers/interconnect/imx/imx.c | 279 ++++++++++++++++++
drivers/interconnect/imx/imx.h | 60 ++++
drivers/interconnect/imx/imx8mm.c | 105 +++++++
drivers/soc/imx/soc-imx8.c | 4 +
include/dt-bindings/interconnect/imx8mm.h | 49 +++
include/linux/devfreq.h | 1 +
include/linux/interconnect-provider.h | 7 +
16 files changed, 645 insertions(+), 18 deletions(-)
create mode 100644 drivers/interconnect/imx/Kconfig
create mode 100644 drivers/interconnect/imx/Makefile
create mode 100644 drivers/interconnect/imx/imx.c
create mode 100644 drivers/interconnect/imx/imx.h
create mode 100644 drivers/interconnect/imx/imx8mm.c
create mode 100644 include/dt-bindings/interconnect/imx8mm.h
--
2.17.1
