[PATCH 00/11] clk: lpc32xx: add clock support for NXP LPC32xx
Vladimir Zapolskiy
vz at mleia.com
Thu Nov 19 17:05:00 PST 2015
This changeset adds common clock framework driver for NXP LPC32xx
boards.
The changeset has dependencies on the recent updates to LPC32xx DTS:
http://permalink.gmane.org/gmane.linux.ports.arm.kernel/456304
The RFC version of CCF driver 9/11 can be found here:
http://www.spinics.net/lists/devicetree/msg100583.html
Changes from RFC to v1:
* added definitions of a missed IRDA clock,
* renamed compatible property from lpc32xx-scb to lpc32xx-clk
* switched to regmap interface instead of mmio, this is required to
secure access to registers shared between pinmux, dma and clock
driver, unfortunately this change has to pull some code snippets
from common gate, divider and mux helpers rebased on regmap API,
* split clock definitions from the driver to be able to update
dts files separately from CCF driver.
The driver is written from scratch, here are main functional
differences with the legacy driver arch/arm/mach-lpc32xx/clock.c:
* serialized access to SCB registers,
* reworked routines to select PLL parameters,
* now the clock driver has detailed description of all clocks,
the original driver misses several clock entries and most of fine
grained clock controls, here every mux and divider are accounted,
* now clocks and clock hierarchies can be described in board DT file,
* sophisticated management of USB clocks, for example now USB device
controller needs only one clock instead of USB PLL, USB OTG and USB
device clocks,
* other benefits from a driver powered by CCF.
Patch 9/11 may produce false positives from checkpatch, the fix
to checkpatch can be found in Andrew's tree.
Vladimir Zapolskiy (11):
dt-bindings: clock: add description of LPC32xx clock controller
dt-bindings: clock: add description of LPC32xx USB clock controller
dt-bindings: clock: add NXP LPC32xx clock list for consumers
arm: dts: lpc32xx: add device nodes for external oscillators
arm: dts: lpc32xx: add clock controller device node
arm: dts: lpc32xx: add clock properties to device nodes
arm: dts: lpc32xx: add USB clock controller
clk: lpc18xx: add NXP specific common clock framework selection
clk: lpc32xx: add common clock framework driver
arm: lpc32xx: switch to common clock framework
arm: dts: lpc32xx: remove clock frequency property from UART device
nodes
.../devicetree/bindings/clock/nxp,lpc3220-clk.txt | 30 +
.../bindings/clock/nxp,lpc3220-usb-clk.txt | 22 +
arch/arm/Kconfig | 4 +-
arch/arm/boot/dts/lpc32xx.dtsi | 87 +-
arch/arm/mach-lpc32xx/Makefile | 3 +-
arch/arm/mach-lpc32xx/clock.c | 1284 ----------------
arch/arm/mach-lpc32xx/phy3250.c | 1 -
arch/arm/mach-lpc32xx/serial.c | 3 -
arch/arm/mach-lpc32xx/timer.c | 144 --
drivers/clk/Kconfig | 6 +
drivers/clk/Makefile | 2 +-
drivers/clk/nxp/Makefile | 1 +
drivers/clk/nxp/clk-lpc32xx.c | 1562 ++++++++++++++++++++
include/dt-bindings/clock/lpc32xx-clock.h | 56 +
14 files changed, 1765 insertions(+), 1440 deletions(-)
create mode 100644 Documentation/devicetree/bindings/clock/nxp,lpc3220-clk.txt
create mode 100644 Documentation/devicetree/bindings/clock/nxp,lpc3220-usb-clk.txt
delete mode 100644 arch/arm/mach-lpc32xx/clock.c
delete mode 100644 arch/arm/mach-lpc32xx/timer.c
create mode 100644 drivers/clk/nxp/clk-lpc32xx.c
create mode 100644 include/dt-bindings/clock/lpc32xx-clock.h
--
2.1.4
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