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. 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 This second version corrects the DT binding documentation patch; an out-of-date version of that patch was sent with the first version. This patch series is also available at: https://github.com/sifive/riscv-linux/tree/dev/paulw/prci-v4.19-rc7 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 | 43 ++ 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, 1224 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@xxxxxxxxxxxx> Cc: Stephen Boyd <sboyd@xxxxxxxxxx> Cc: Albert Ou <aou@xxxxxxxxxxxxxxxxx> Cc: Wesley W. Terpstra <wesley@xxxxxxxxxx> Cc: Palmer Dabbelt <palmer@xxxxxxxxxx> Cc: Megan Wachs <megan@xxxxxxxxxx> Cc: Rob Herring <robh+dt@xxxxxxxxxx> Cc: Mark Rutland <mark.rutland@xxxxxxx> Cc: devicetree@xxxxxxxxxxxxxxx Cc: linux-riscv@xxxxxxxxxxxxxxxxxxx Cc: linux-kernel@xxxxxxxxxxxxxxx Cc: linux-clk@xxxxxxxxxxxxxxx -- 2.19.1
