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clk: Add Si5341/Si5340 driver

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Adds a driver for the Si5341 and Si5340 chips. The driver does not fully
support all features of these chips, but allows the chip to be used
without any support from the "clockbuilder pro" software.

If the chip is preprogrammed, that is, you bought one with some defaults
burned in, or you programmed the NVM in some way, the driver will just
take over the current settings and only change them on demand. Otherwise
the input must be a fixed XTAL in its most basic configuration (no
predividers, no feedback, etc.).

The driver supports dynamic changes of multisynth, output dividers and
enabling or powering down outputs and multisynths.

Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
[sboyd@kernel.org: Mark some things static, use BIT_ULL for big bits and
ULL for big constants]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Mike Looijmans 2019-05-17 15:23:52 +02:00 committed by Stephen Boyd
parent d743ea67cb
commit 3044a860fd
3 changed files with 1358 additions and 0 deletions
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11
drivers/clk/Kconfig
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@ -91,6 +91,17 @@ config COMMON_CLK_SCPI
This driver uses SCPI Message Protocol to interact with the
firmware providing all the clock controls.
config COMMON_CLK_SI5341
tristate "Clock driver for SiLabs 5341 and 5340 A/B/C/D devices"
depends on I2C
select REGMAP_I2C
help
This driver supports Silicon Labs Si5341 and Si5340 programmable clock
generators. Not all features of these chips are currently supported
by the driver, in particular it only supports XTAL input. The chip can
be pre-programmed to support other configurations and features not yet
implemented in the driver.
config COMMON_CLK_SI5351
tristate "Clock driver for SiLabs 5351A/B/C"
depends on I2C

1
drivers/clk/Makefile
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@ -49,6 +49,7 @@ obj-$(CONFIG_COMMON_CLK_HI655X) += clk-hi655x.o
obj-$(CONFIG_COMMON_CLK_S2MPS11) += clk-s2mps11.o
obj-$(CONFIG_COMMON_CLK_SCMI) += clk-scmi.o
obj-$(CONFIG_COMMON_CLK_SCPI) += clk-scpi.o
obj-$(CONFIG_COMMON_CLK_SI5341) += clk-si5341.o
obj-$(CONFIG_COMMON_CLK_SI5351) += clk-si5351.o
obj-$(CONFIG_COMMON_CLK_SI514) += clk-si514.o
obj-$(CONFIG_COMMON_CLK_SI544) += clk-si544.o

1346
drivers/clk/clk-si5341.c Normal file
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