[v4,0/2] clk: add driver for the SiFive FU540 PRCI and PLLs it controls

Message

Paul Walmsley April 30, 2019, 8:50 p.m. UTC

clk: add driver for the SiFive FU540 PRCI and PLLs it controls

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
chip.

This fourth version incorporates changes requested by Stephen Boyd
<[e-mail]>.  The DT bindings patch has been dropped since
Stephen has already queued it.

This patch series is also available, with the binding documentation
patch, at:

   https://github.com/sifive/riscv-linux/tree/dev/paulw/prci-v5.1-rc7

Boot-tested on a SiFive HiFive Unleashed board, using BBL and the
open-source FSBL with a mainline-focused DTB, using the following
composite test branch:

   https://github.com/sifive/riscv-linux/tree/dev/paulw/dts-v5.1-rc7-experimental


- Paul

Paul Walmsley (2):
  clk: analogbits: add Wide-Range PLL library
  clk: sifive: add a driver for the SiFive FU540 PRCI IP block

 MAINTAINERS                                   |   6 +
 drivers/clk/Kconfig                           |   3 +
 drivers/clk/Makefile                          |   2 +
 drivers/clk/analogbits/Kconfig                |   2 +
 drivers/clk/analogbits/Makefile               |   3 +
 drivers/clk/analogbits/wrpll-cln28hpc.c       | 364 ++++++++++
 drivers/clk/sifive/Kconfig                    |  18 +
 drivers/clk/sifive/Makefile                   |   1 +
 drivers/clk/sifive/fu540-prci.c               | 630 ++++++++++++++++++
 include/linux/clk/analogbits-wrpll-cln28hpc.h |  79 +++
 10 files changed, 1108 insertions(+)
 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