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Message-ID: <20231004063712.3348978-1-alvin@pqrs.dk>
Date: Wed, 4 Oct 2023 08:35:26 +0200
From: Alvin Å ipraga <alvin@...s.dk>
To: Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>,
Andrew Lunn <andrew@...n.ch>,
Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
Gregory Clement <gregory.clement@...tlin.com>,
ipraga <alsi@...g-olufsen.dk>
Cc: linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: [PATCH v2 0/4] clk: si5351: add option to adjust PLL without glitches
From: Alvin Å ipraga <alsi@...g-olufsen.dk>
This series intends to address a problem I had when using the Si5351A as
a runtime adjustable audio bit clock. The basic issue is that the driver
in its current form unconditionally resets the PLL whenever adjusting
its rate. But this reset causes an unwanted ~1.4 ms LOW signal glitch in
the clock output.
As a remedy, a new property is added to control the reset behaviour of
the PLLs more precisely. In the process I also converted the bindings to
YAML.
Changes:
v1 -> v2:
- address Rob's comments on the two dt-bindings patches
- new patch to correct the clock node names in the only upstream device
tree using si5351
Alvin Å ipraga (4):
dt-bindings: clock: si5351: convert to yaml
ARM: dts: dove-cubox: fix si5351 node names
dt-bindings: clock: si5351: add PLL reset mode property
clk: si5351: allow PLLs to be adjusted without reset
.../bindings/clock/silabs,si5351.txt | 126 --------
.../bindings/clock/silabs,si5351.yaml | 277 ++++++++++++++++++
arch/arm/boot/dts/marvell/dove-cubox.dts | 4 +-
drivers/clk/clk-si5351.c | 47 ++-
include/linux/platform_data/si5351.h | 2 +
5 files changed, 325 insertions(+), 131 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/clock/silabs,si5351.txt
create mode 100644 Documentation/devicetree/bindings/clock/silabs,si5351.yaml
--
2.42.0
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