Hi,
This patchset adds support for pwm clock. At boot, this clock does not have a
default parent nor a default rate set. Thus we should be able to change its
parent to get this clock working. The current clock implementation is using a
mux to select the parent, but these clocks need to add a password (0x5a) in
higher register bits when changing parent. So a generic mux cannot be used
here.
The two first patches fix the clock parent selection, while the last ones are
actually adding the pwm clock registration.
Changes since v1:
- determine_rate now based its parent selection upon divided rate
instead of the parent one
- bcm2835_clock_choose_div has been modified to produce an avarage rate
lower or equal to the requested one
- devicetree modifications have removed to be send in another patch
Changes since v2:
- Remove useless variable and include
- Make bcm2835_clock_choose_div() divisor round up ability optional
- Set rate in bcm2835_determine_rate()
- Add device tree modification in a separate patch
Remi Pommarel (4):
clk: bcm2835: add a round up ability to the clock divisor
clk: bcm2835: Support for clock parent selection
clk: bcm2835: Add PWM clock support
clk: bcm2835: Add PWM clock support to the device tree
arch/arm/boot/dts/bcm2835-rpi.dtsi | 4 +
arch/arm/boot/dts/bcm2835.dtsi | 9 +++
drivers/clk/bcm/clk-bcm2835.c | 155 +++++++++++++++++++++++-------------
include/dt-bindings/clock/bcm2835.h | 3 +-
4 files changed, 116 insertions(+), 55 deletions(-)
--
2.0.1
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