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
