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From: Dario Binacchi <dariobin@libero.it>
To: linux-kernel@vger.kernel.org
Cc: "Dario Binacchi" <dariobin@libero.it>,
	"Benoît Cousson" <bcousson@baylibre.com>,
	"Lee Jones" <lee.jones@linaro.org>,
	"Michael Turquette" <mturquette@baylibre.com>,
	"Rob Herring" <robh+dt@kernel.org>,
	"Stephen Boyd" <sboyd@kernel.org>,
	"Tero Kristo" <kristo@kernel.org>,
	"Tony Lindgren" <tony@atomide.com>,
	devicetree@vger.kernel.org, linux-clk@vger.kernel.org,
	linux-omap@vger.kernel.org
Subject: [PATCH 0/4] clk: ti: add am33xx spread spectrum clock support
Date: Sun, 14 Mar 2021 16:12:29 +0100
Message-ID: <20210314151233.23243-1-dariobin@libero.it> (raw)


As reported by the TI spruh73x RM, MPU and LCD modules support spread
spectrum clocking (SSC) on their output clocks. SSC is used to spread
the spectral peaking of the clock to reduce any electromagnetic
interference (EMI) that may be caused due to the clock’s fundamental
or any of its harmonics.
The series allows you to enable and adjust the spread spectrum clocking
for all am33xx PLLs for which it is supported.



Dario Binacchi (4):
  clk: ti: fix typo in routine description
  dt-bindings: ti: dpll: add spread spectrum support
  ARM: dts: am33xx-clocks: add spread spectrum support
  clk: ti: add am33xx spread spectrum clock support

 .../devicetree/bindings/clock/ti/dpll.txt     | 20 +++++
 arch/arm/boot/dts/am33xx-clocks.dtsi          |  4 +-
 drivers/clk/ti/dpll.c                         | 41 +++++++++
 drivers/clk/ti/dpll3xxx.c                     | 87 ++++++++++++++++++-
 include/linux/clk/ti.h                        | 24 +++++
 5 files changed, 173 insertions(+), 3 deletions(-)

-- 
2.17.1


             reply index

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-14 15:12 Dario Binacchi [this message]
2021-03-14 15:12 ` [PATCH 1/4] clk: ti: fix typo in routine description Dario Binacchi
2021-03-14 15:12 ` [PATCH 2/4] dt-bindings: ti: dpll: add spread spectrum support Dario Binacchi
2021-03-14 15:12 ` [PATCH 4/4] clk: ti: add am33xx spread spectrum clock support Dario Binacchi
2021-03-16 11:52   ` Grygorii Strashko
2021-03-18  7:38     ` Dario Binacchi
2021-03-18 12:08       ` Grygorii Strashko

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