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Date: Wed, 11 Nov 2015 15:22:42 +0100
From: Remi Pommarel <repk@...plefau.lt>
To: Stephen Warren <swarren@...dotorg.org>, Lee Jones <lee@...nel.org>,
Eric Anholt <eric@...olt.net>,
Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...eaurora.org>,
linux-rpi-kernel@...ts.infradead.org, linux-clk@...r.kernel.org,
linux-kernel@...r.kernel.org
Cc: Remi Pommarel <repk@...plefau.lt>
Subject: [PATCH v2 0/3] Add PWM clock support for bcm2835
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 second one is
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
Remi Pommarel (3):
clk: bcm2835: Always round up clock divisor
clk: bcm2835: Support for clock parent selection
clk: bcm2835: Add PWM clock support
drivers/clk/bcm/clk-bcm2835.c | 151 +++++++++++++++++++++++-------------
include/dt-bindings/clock/bcm2835.h | 3 +-
2 files changed, 101 insertions(+), 53 deletions(-)
--
2.0.1
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