From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
To: narmstrong@baylibre.com, jbrunet@baylibre.com,
robh+dt@kernel.org, mark.rutland@arm.com,
linux-amlogic@lists.infradead.org, devicetree@vger.kernel.org,
khilman@baylibre.com
Cc: linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org,
Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Subject: [PATCH 0/5] provide the XTAL clock via OF on Meson8/8b/8m2
Date: Sat, 21 Sep 2019 17:12:18 +0200 [thread overview]
Message-ID: <20190921151223.768842-1-martin.blumenstingl@googlemail.com> (raw)
So far the HHI clock controller has been providing the XTAL clock on
Amlogic Meson8/Meson8b/Meson8m2 SoCs.
This is not correct because the XTAL is actually a crystal on the
boards and the SoC has a dedicated input for it.
This updates the dt-bindings of the HHI clock controller and defines
a fixed-clock in meson.dtsi (along with switching everything over to
use this clock).
The clock driver needs three updates to use this:
- patch #2 uses clk_hw_set_parent in the CPU clock notifier. This drops
the explicit reference to CLKID_XTAL while at the same time making
the code much easier (thanks to Neil for providing this new method
as part of the G12A CPU clock bringup!)
- patch #3 ensures that the clock driver doesn't rely on it's internal
XTAL clock while not losing support for older .dtbs that don't have
the XTAL clock input yet
- with patch #4 the clock controller's own XTAL clock is not registered
anymore when a clock input is provided via OF
This series is a functional no-op. It's main goal is to better represent
how the actual hardware looks like.
Martin Blumenstingl (5):
dt-bindings: clock: meson8b: add the clock inputs
clk: meson: meson8b: use clk_hw_set_parent in the CPU clock notifier
clk: meson: meson8b: change references to the XTAL clock to use the
name
clk: meson: meson8b: don't register the XTAL clock when provided via
OF
ARM: dts: meson: provide the XTAL clock using a fixed-clock
.../bindings/clock/amlogic,meson8b-clkc.txt | 5 +
arch/arm/boot/dts/meson.dtsi | 7 ++
arch/arm/boot/dts/meson6.dtsi | 7 --
arch/arm/boot/dts/meson8.dtsi | 15 +--
arch/arm/boot/dts/meson8b-ec100.dts | 2 +-
arch/arm/boot/dts/meson8b-mxq.dts | 2 +-
arch/arm/boot/dts/meson8b-odroidc1.dts | 2 +-
arch/arm/boot/dts/meson8b.dtsi | 15 +--
drivers/clk/meson/meson8b.c | 106 +++++++++---------
9 files changed, 87 insertions(+), 74 deletions(-)
--
2.23.0
next reply other threads:[~2019-09-21 15:12 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-21 15:12 Martin Blumenstingl [this message]
2019-09-21 15:12 ` [PATCH 1/5] dt-bindings: clock: meson8b: add the clock inputs Martin Blumenstingl
2019-10-02 14:19 ` Rob Herring
2019-09-21 15:12 ` [PATCH 2/5] clk: meson: meson8b: use clk_hw_set_parent in the CPU clock notifier Martin Blumenstingl
2019-09-21 15:12 ` [PATCH 3/5] clk: meson: meson8b: change references to the XTAL clock to use the name Martin Blumenstingl
2019-09-21 15:12 ` [PATCH 4/5] clk: meson: meson8b: don't register the XTAL clock when provided via OF Martin Blumenstingl
2019-09-23 9:31 ` Jerome Brunet
2019-09-23 20:57 ` Martin Blumenstingl
2019-09-21 15:12 ` [PATCH 5/5] ARM: dts: meson: provide the XTAL clock using a fixed-clock Martin Blumenstingl
2019-09-23 9:29 ` [PATCH 0/5] provide the XTAL clock via OF on Meson8/8b/8m2 Jerome Brunet
2019-09-23 20:56 ` Martin Blumenstingl
2019-09-25 22:47 ` Kevin Hilman
2019-09-26 18:34 ` Martin Blumenstingl
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