linux-kernel - [PATCH v6 0/6] Add CPU clock support for Armada 7K/8K

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Message-Id: <20190619141539.16884-1-gregory.clement@bootlin.com>
Date:   Wed, 19 Jun 2019 16:15:33 +0200
From:   Gregory CLEMENT <gregory.clement@...tlin.com>
To:     Stephen Boyd <sboyd@...nel.org>,
        Mike Turquette <mturquette@...libre.com>,
        linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        Jason Cooper <jason@...edaemon.net>,
        Andrew Lunn <andrew@...n.ch>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Gregory CLEMENT <gregory.clement@...tlin.com>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        linux-arm-kernel@...ts.infradead.org,
        Antoine Tenart <antoine.tenart@...tlin.com>,
        Miquèl Raynal <miquel.raynal@...tlin.com>,
        Maxime Chevallier <maxime.chevallier@...tlin.com>
Subject: [PATCH v6 0/6] Add CPU clock support for Armada 7K/8K

Hello,

This is the sixth version of a series allowing to manage the cpu clock
for Armada 7K/8K.

For these SoCs, the CPUs share the same clock by cluster, so actually
the clock management is done at cluster level.

As for the other Armada 7K/8K clocks it is possible to have multiple
AP so here again we need to have unique name: the purpose of the second
patch is to share a common code which will be used in 3 drivers.

The last 2 patch enable the driver at dt and platform level and will
be applied through the mvebu subsystem.

Changelog v5->v6:

   - Restraint the reg property for the child node to not overlap the
     other node.
   - Give a specific compatible to ap_syscon1.

Changelog v4->v5:

 - As requested by the device tree maintainer make the reg property
   mandatory

 - Updated the device tree files accordingly with the new binding

Changelog v3->v4:
 - Rebased on v5.1-rc1
 - Mention in the binding that a reg property can be used to make the
   device tree maintainer happy in the hope that there will be finally
   a review on this patch blocking the whole series.

Changelog v2->v3:
 - Add back the first patch documenting the binding

Changelog v1->v2:
 - Header cleanup
 - Use unsigned int instead of it for cluster member of the ap_cpu_clk struct
 - Use clk_hw instead of clk
 - Use regmap_read_poll_timeout
 - Use for_each_of_cpu_node
 - Remove unnecessary WARN_ON()
 - Remove headers from armada_ap_cp_helper.h
 - Few other minor cleanup

Gregory CLEMENT (6):
  dt-bindings: ap806: add the cluster clock node in the syscon file
  clk: mvebu: add helper file for Armada AP and CP clocks
  clk: mvebu: add CPU clock driver for Armada 7K/8K
  clk: mvebu: ap806: Fix clock name for the cluster
  arm64: marvell: enable the  Armada 7K/8K CPU clk driver
  arm64: dts: marvell: Add cpu clock node on Armada 7K/8K

 .../arm/marvell/ap806-system-controller.txt   |  25 ++
 arch/arm64/Kconfig.platforms                  |   1 +
 .../boot/dts/marvell/armada-ap806-quad.dtsi   |   4 +
 arch/arm64/boot/dts/marvell/armada-ap806.dtsi |   7 +
 drivers/clk/mvebu/Kconfig                     |   8 +
 drivers/clk/mvebu/Makefile                    |   2 +
 drivers/clk/mvebu/ap-cpu-clk.c                | 259 ++++++++++++++++++
 drivers/clk/mvebu/ap806-system-controller.c   |  24 +-
 drivers/clk/mvebu/armada_ap_cp_helper.c       |  30 ++
 drivers/clk/mvebu/armada_ap_cp_helper.h       |  11 +
 drivers/clk/mvebu/cp110-system-controller.c   |  32 +--
 11 files changed, 361 insertions(+), 42 deletions(-)
 create mode 100644 drivers/clk/mvebu/ap-cpu-clk.c
 create mode 100644 drivers/clk/mvebu/armada_ap_cp_helper.c
 create mode 100644 drivers/clk/mvebu/armada_ap_cp_helper.h

-- 
2.20.1