linux-toradex.git/drivers/clk/at91/Makefile, branch v4.9.45

clk: at91: add generated clock driver

2015-10-01T19:48:11+00:00

Add a new type of clocks that can be provided to a peripheral.
In addition to the peripheral clock, this new clock that can use several
input clocks as parents can generate divided rates.
This would allow a peripheral to have finer grained clocks for generating
a baud rate, clocking an asynchronous part or having more
options in frequency.

Signed-off-by: Nicolas Ferre 
Signed-off-by: Boris Brezillon 
[sboyd@codeaurora.org: Transition to new clk_hw provider APIs]
Signed-off-by: Stephen Boyd

clk: at91: add a driver for the h32mx clock

2014-09-22T09:38:59+00:00

Newer SoCs have two different AHB interconnect. The AHB 32 bits Matrix
interconnect (h32mx) has a clock that can be setup at the half of the h64mx
clock (which is mck). The h32mx clock can not exceed 90 MHz.

Signed-off-by: Alexandre Belloni 
Acked-by: Boris Brezillon 
Signed-off-by: Nicolas Ferre

clk: at91: add slow clks driver

2014-05-07T16:27:45+00:00

AT91 slow clk is a clk multiplexer.

In some SoCs (sam9x5, sama5, sam9g45 families) this multiplexer can
choose among 2 sources: an internal RC oscillator circuit and an oscillator
using an external crystal.

In other Socs (sam9260 family) the multiplexer source is hardcoded with
the OSCSEL signal.

Signed-off-by: Boris BREZILLON 
Acked-by: Mike Turquette 
Signed-off-by: Nicolas Ferre

ARM: at91: remove AT91_PROGRAMMABLE_CLOCKS configuration option

2013-12-12T17:57:42+00:00

This AT91 specific Kconfig option removed the code that dealt with
programmable clocks. Each AT91 SoC embeds programmable clocks and
there is little gain to remove this code in case that such a clock
is not used.
If this option is not selected, it causes certain drivers to fail
to build. We simply remove this option instead of adding code just
to build a workaround.

Signed-off-by: Nicolas Ferre 
Signed-off-by: Kevin Hilman

clk: at91: add PMC smd clock

2013-12-02T14:31:25+00:00

This patch adds at91 smd (Soft Modem) clock implementation using common clk
framework.

Not used by any driver right now.

Signed-off-by: Boris BREZILLON 
Acked-by: Mike Turquette 
Signed-off-by: Nicolas Ferre

clk: at91: add PMC usb clock

2013-12-02T14:31:25+00:00

This patch adds new at91 usb clock implementation using common clk framework.
This clock is used to clock usb ports (ohci, ehci and udc).

Signed-off-by: Boris BREZILLON 
Acked-by: Mike Turquette 
Signed-off-by: Nicolas Ferre

clk: at91: add PMC utmi clock

2013-12-02T14:31:25+00:00

This adds new at91 utmi clock implementation using common clk framework.

This clock is a pll with a fixed factor (x40).
It is used as a source for usb clock.

Signed-off-by: Boris BREZILLON 
Acked-by: Mike Turquette 
Signed-off-by: Nicolas Ferre

clk: at91: add PMC programmable clocks

2013-12-02T14:31:24+00:00

This patch adds new at91 programmable clocks implementation using common clk
framework.
A programmable clock is a clock which can be exported on a given pin to clock
external devices.
Each programmable clock is given an id (from 0 to 8).
The number of available programmable clocks depends on the SoC you're using.
Programmable clock driver only implements the clock setting (clock rate and
parent setting). It must be chained to a system clock in order to
enable/disable the generated clock.
The PCKX pins used to output the clock signals must be assigned to the
appropriate peripheral (see atmel's datasheets).

Signed-off-by: Boris BREZILLON 
Acked-by: Mike Turquette 
Signed-off-by: Nicolas Ferre

clk: at91: add PMC peripheral clocks

2013-12-02T14:31:24+00:00

This patch adds new at91 peripheral clock implementation using common clk
framework.

Almost all peripherals provided by at91 SoCs need a clock to work properly.
This clock is enabled/disabled using PCER/PCDR resgisters.

Each peripheral is given an id (see atmel's datasheets) which is used to
define and reference peripheral clocks.

Some new SoCs (at91sam9x5 and sama5d3) provide a new register (PCR) where you
can configure the peripheral clock as a division of the master clock.
This will help reducing the peripherals power comsumption.

Signed-off-by: Boris BREZILLON 
Acked-by: Mike Turquette 
Signed-off-by: Nicolas Ferre

clk: at91: add PMC system clocks

2013-12-02T14:31:23+00:00

This patch adds new at91 system clock implementation using common clk
framework.

Some peripherals need to enable a "system" clock in order to work properly.
Each system clock is given an id based on the bit position in SCER/SCDR
registers.

Signed-off-by: Boris BREZILLON 
Acked-by: Mike Turquette 
Signed-off-by: Nicolas Ferre