[v2,0/5] clk: add fsl-flexspi driver

Message

Michael Walle Nov. 5, 2020, 7:35 p.m. UTC

On Layerscape SoCs which feature the FlexSPI controller there is
a single register which can control the divider value. The base
frequency is the platform PLL.

Right now the LS1028A and the LX2160A aren't able to switch the
SCK frequency on the FlexSPI interface. Add a new clock driver
which operate on said register.

Michael Walle (5):
  clk: divider: add devm_clk_hw_register_divider_table()
  dt-bindings: clock: document the fsl-flexspi-clk driver
  clk: fsl-flexspi: new driver
  arm64: dts: ls1028a: fix FlexSPI clock
  arm64: dts: lx2160a: fix FlexSPI clock

 .../bindings/clock/fsl,flexspi-clock.yaml     |  55 +++++++++
 .../arm64/boot/dts/freescale/fsl-ls1028a.dtsi |  15 ++-
 .../arm64/boot/dts/freescale/fsl-lx2160a.dtsi |  15 ++-
 drivers/clk/Kconfig                           |   8 ++
 drivers/clk/Makefile                          |   1 +
 drivers/clk/clk-divider.c                     |  34 ++++++
 drivers/clk/clk-fsl-flexspi.c                 | 106 ++++++++++++++++++
 include/linux/clk-provider.h                  |  27 +++++
 8 files changed, 257 insertions(+), 4 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/clock/fsl,flexspi-clock.yaml
 create mode 100644 drivers/clk/clk-fsl-flexspi.c