[PATCH 0/3] clk: add driver for the SiFive FU540 PRCI and PLLs it controls

Paul Walmsley paul.walmsley at sifive.com
Sat Oct 20 06:38:21 PDT 2018

Add a driver for the SiFive FU540 PRCI IP block, which handles clock and
some device reset control for the SiFive FU540 chip.  Also add a driver-
independent library for the Analog Bits Wide-Range PLL (WRPLL), used by
the PRCI driver to monitor and control the WRPLL instances on the FU540

It's been a long time since I've worked on Linux clock code, so Mike &
Stephen, I'd appreciate a close look at the PRCI driver to make sure
what it's doing makes sense.

Boot-tested on a SiFive HiFive Unleashed board.  COREPLL rate changes
and notification were also tested on the same board.

This patch series is also available at:


Paul Walmsley (3):
  clk: analogbits: add Wide-Range PLL library
  dt-bindings: clk: add documentation for the SiFive PRCI driver
  clk: sifive: add a driver for the SiFive FU540 PRCI IP block

 .../bindings/clock/sifive/fu540-prci.txt      |  40 ++
 MAINTAINERS                                   |   6 +
 drivers/clk/Kconfig                           |   2 +
 drivers/clk/Makefile                          |   2 +
 drivers/clk/analogbits/Kconfig                |   3 +
 drivers/clk/analogbits/Makefile               |   2 +
 drivers/clk/analogbits/wrpll-cln28hpc.c       | 387 +++++++++++
 drivers/clk/sifive/Kconfig                    |  18 +
 drivers/clk/sifive/Makefile                   |   1 +
 drivers/clk/sifive/fu540-prci.c               | 634 ++++++++++++++++++
 include/linux/clk/analogbits-wrpll-cln28hpc.h |  99 +++
 include/linux/clk/sifive-fu540-prci.h         |  27 +
 12 files changed, 1221 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/sifive/fu540-prci.txt
 create mode 100644 drivers/clk/analogbits/Kconfig
 create mode 100644 drivers/clk/analogbits/Makefile
 create mode 100644 drivers/clk/analogbits/wrpll-cln28hpc.c
 create mode 100644 drivers/clk/sifive/Kconfig
 create mode 100644 drivers/clk/sifive/Makefile
 create mode 100644 drivers/clk/sifive/fu540-prci.c
 create mode 100644 include/linux/clk/analogbits-wrpll-cln28hpc.h
 create mode 100644 include/linux/clk/sifive-fu540-prci.h

Cc: Michael Turquette <mturquette at baylibre.com>
Cc: Stephen Boyd <sboyd at kernel.org>
Cc: Albert Ou <aou at eecs.berkeley.edu>
Cc: Wesley W. Terpstra <wesley at sifive.com>
Cc: Palmer Dabbelt <palmer at sifive.com>
Cc: Megan Wachs <megan at sifive.com>
Cc: Rob Herring <robh+dt at kernel.org>
Cc: Mark Rutland <mark.rutland at arm.com>
Cc: devicetree at vger.kernel.org
Cc: linux-riscv at lists.infradead.org
Cc: linux-kernel at vger.kernel.org
Cc: linux-clk at vger.kernel.org


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