linux-kernel - [PATCH v4 00/13] PolarFire SoC reset controller & clock cleanups

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Date:   Tue, 30 Aug 2022 13:50:58 +0100
From:   Conor Dooley <conor.dooley@...rochip.com>
To:     Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Palmer Dabbelt <palmer@...belt.com>,
        Conor Dooley <conor.dooley@...rochip.com>,
        Daire McNamara <daire.mcnamara@...rochip.com>
CC:     Paul Walmsley <paul.walmsley@...ive.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Claudiu Beznea <claudiu.beznea@...rochip.com>,
        <linux-clk@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-riscv@...ts.infradead.org>
Subject: [PATCH v4 00/13] PolarFire SoC reset controller & clock cleanups

Hey all,

Kinda two things happening in this series, but I sent it together to
ensure the second part would apply correctly.

The first is the reset controller that I promised after discovering the
issue triggered by CONFIG_PM & the phy not coming up correctly. I have
now removed all the messing with resets from clock enable/disable
functions & now use the aux bus to set up a reset controller driver.
Since I needed something to test it, I hooked up the reset for the
Cadence MACB on PolarFire SoC. This has been split into a second series
for v2 (and is now in v6.0-rcN):
https://lore.kernel.org/all/20220704114511.1892332-1-conor.dooley@microchip.com/

The second part adds rate control for the MSS PLL clock, followed by
some simplifications to the driver & conversions of some custom structs
to the corresponding structs in the framework.

I'll take the dts patch myself when the rest of this is okay-ed.
Thanks,
Conor.

Changes since v3:
- return results directly in probe() & reset_controller_register()

Changes since v2:
- reorder reset Makefile/Kconfig entries
- fix a pre-existing bug exposed by clang with this series applied
- add Padmarao who co-authored the original driver to the authors

Conor Dooley (13):
  clk: microchip: mpfs: fix clk_cfg array bounds violation
  dt-bindings: clk: microchip: mpfs: add reset controller support
  clk: microchip: mpfs: add reset controller
  reset: add polarfire soc reset support
  MAINTAINERS: add polarfire soc reset controller
  riscv: dts: microchip: add mpfs specific macb reset support
  clk: microchip: mpfs: add MSS pll's set & round rate
  clk: microchip: mpfs: move id & offset out of clock structs
  clk: microchip: mpfs: simplify control reg access
  clk: microchip: mpfs: delete 2 line mpfs_clk_register_foo()
  clk: microchip: mpfs: convert cfg_clk to clk_divider
  clk: microchip: mpfs: convert periph_clk to clk_gate
  clk: microchip: mpfs: update module authorship & licencing

 .../bindings/clock/microchip,mpfs.yaml        |  17 +-
 MAINTAINERS                                   |   1 +
 arch/riscv/boot/dts/microchip/mpfs.dtsi       |   7 +-
 drivers/clk/microchip/Kconfig                 |   1 +
 drivers/clk/microchip/clk-mpfs.c              | 380 +++++++++---------
 drivers/reset/Kconfig                         |   7 +
 drivers/reset/Makefile                        |   2 +-
 drivers/reset/reset-mpfs.c                    | 157 ++++++++
 include/soc/microchip/mpfs.h                  |   8 +
 9 files changed, 384 insertions(+), 196 deletions(-)
 create mode 100644 drivers/reset/reset-mpfs.c


base-commit: 568035b01cfb107af8d2e4bd2fb9aea22cf5b868
-- 
2.36.1