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The clock controller on Meson8/Meson8b/Meson8m2 has three (known)
inputs:
- "xtal": the main 24MHz crystal
- "ddr_pll": some of the audio clocks use the output of the DDR PLL as
input
- "clk_32k": an optional clock signal which can be connected to GPIOAO_6
(which then has to be switched to the CLK_32K_IN function)
Add the inputs to the documentation so we can wire up these inputs in a
follow-up patch.
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
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The clock controller on Meson8/Meson8m2 and Meson8b is part of a
register region called "HHI". This register area contains more
functionality than just a clock controller:
- the clock controller
- some reset controller bits
- temperature sensor calibration coefficient (only on Meson8b and
Meson8m2 - one one out of five TSC bits is stored in the HHI
registers)
- HDMI controller
The HHI register area may be accessed concurrently. Allow this by using
a "system controller" as parent node.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lkml.kernel.org/r/20181028120859.5735-2-martin.blumenstingl@googlemail.com
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM/arm64 Devicetree updates from Olof Johansson:
"As usual, device tree updates is the bulk of our material in this
merge window. This time around, 559 patches affecting both 32- and
64-bit platforms.
Changes are too many to list individually, but some of the larger
ones:
New platform/SoC support:
- Automotive:
+ Renesas R-Car D3 (R8A77995)
+ TI DT76x
+ MediaTek mt2712e
- Communication-oriented:
+ Qualcomm IPQ8074
+ Broadcom Stingray
+ Marvell Armada 8080
- Set top box:
+ Uniphier PXs3
Besides some vendor reference boards for the SoC above, there are also
several new boards/machines:
- TI AM335x Moxa UC-8100-ME-T open platform
- TI AM57xx Beaglebone X15 Rev C
- Microchip/Atmel sama5d27 SoM1 EK
- Broadcom Raspberry Pi Zero W
- Gemini-based D-Link DIR-685 router
- Freescale i.MX6:
+ Toradex Apalis module + Apalis and Ixora carrier boards
+ Engicam GEAM6UL Starter Kit
- Freescale i.MX53-based Beckhoff CX9020 Embedded PC
- Mediatek mt7623-based BananaPi R2
- Several Allwinner-based single-board computers:
+ Cubietruck plus
+ Bananapi M3, M2M and M64
+ NanoPi A64
+ A64-OLinuXino
+ Pine64
- Rockchip RK3328 Pine64/Rock64 board support
- Rockchip RK3399 boards:
+ RK3399 Sapphire module on Excavator carrier (RK3399 reference design)
+ Theobroma Systems RK3399-Q7 SoM
- ZTE ZX296718 PCBOX Board"
* tag 'armsoc-devicetree' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (559 commits)
ARM: dts: at91: at91sam9g45: add AC97
arm64: dts: marvell: mcbin: enable more networking ports
arm64: dts: marvell: add a reference to the sysctrl syscon in the ppv2 node
arm64: dts: marvell: add TX interrupts for PPv2.2
arm64: dts: uniphier: add PXs3 SoC support
ARM: dts: uniphier: add pinctrl groups of ethernet phy mode
ARM: dts: uniphier: fix size of sdctrl nodes
ARM: dts: uniphier: add AIDET nodes
arm64: dts: uniphier: fix size of sdctrl node
arm64: dts: uniphier: add AIDET nodes
Revert "ARM: dts: sun8i: h3: Enable dwmac-sun8i on the Beelink X2"
arm64: dts: uniphier: add reset controller node of analog amplifier
arm64: dts: marvell: add Device Tree files for Armada-8KP
arm64: dts: rockchip: add Haikou baseboard with RK3399-Q7 SoM
arm64: dts: rockchip: add RK3399-Q7 (Puma) SoM
dt-bindings: add rk3399-q7 SoM
ARM: dts: rockchip: enable usb for rv1108-evb
ARM: dts: rockchip: add usb nodes for rv1108 SoCs
dt-bindings: update grf-binding for rv1108 SoCs
ARM: dts: aspeed-g4: fix AHB window size of the SMC controllers
...
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Pretty much any node can have a status property, so it doesn't need to
be in examples.
Converted with the following command and removed examples with SoC and
board specific splits:
git grep -l -E 'status.*=.*' Documentation/devicetree/ | xargs sed -i -E '/\sstatus.*=.*"(disabled|ok|okay)/d'
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
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The Amlogic Meson8/Meson8b/Meson8m2 clock controller provides some reset
lines. These are used for example to boot the secondary CPU cores.
This patch describes the reset controller which is embedded into the
clock controller on these SoCs.
A header file is provided which provides preprocessor macros for each
reset line (to make the .dts files easier to read).
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
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The clock controller on Meson8, Meson8b and Meson8m2 is very similar
based on the code from the Amlogic GPL kernel sources. Add separate
compatibles for each SoC to make sure that we can easily implement
all the small differences for each SoC later on.
In general the Meson8 and Meson8m2 seem to be almost identical as they
even share the same mach-meson8 directory in Amlogic's GPL kernel
sources.
The main clocks on Meson8, Meson8b and Meson8m2 are very similar,
because they are all using the same PLL values, 90% of the clock gates
are the same (the actual diffstat of the mach-meson8/clock.c and
mach-meson8b/clock.c files is around 30 to 40 lines, when excluding
all commented out code).
The difference between the Meson8 and Meson8b clock gates seem to be:
- Meson8 has AIU_PCLK, HDMI_RX, VCLK2_ENCT, VCLK2_ENCL, UART3,
CSI_DIG_CLKIN gates which don't seem to be available on Meson8b
- the gate on Meson8 for bit 7 seems to be named "_1200XXX" instead
of "PERIPHS_TOP" (on Meson8b)
- Meson8b has a SANA gate which doesn't seem to exist on Meson8 (or
on Meson8 the same bit is used by the UART3 gate in Amlogic's GPL
kernel sources)
None of these gates is added for now, since it's unclear whether these
definitions are actually correct (the VCLK2_ENCT gate for example is
defined, but only used in some commented block).
The main difference between all three SoCs seem to be the video (VPU)
clocks. Apart from different supported clock rates (according to vpu.c
in mach-meson8 and mach-meson8b from Amlogic's GPL kernel sources) the
most notable difference is that Meson8m2 has a GP_PLL clock and a mux
(probably the same as on the Meson GX SoCs) to support glitch-free
(clock rate) switching.
None of these VPU clocks are not supported by our mainline meson8b
clock driver yet though.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
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Add documentation for the clock controller.
Signed-off-by: Carlo Caione <carlo@endlessm.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
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