clock_sun6i.c is used for sun6i, sun8i and sun50i SoC families.
PLL1 clock sets the default system clock, defined as:
sun6i: 1008000000
sun8i: 1008000000
sun50i: 816000000
With the current calculation, m = 2 and k = 3. Solving for n,
this results 28. Solving back:
(24MHz * 28 * 3) / 2 = 1008MHz
However if the requested clock is 816, n is 22.66 rounded
to 22, which results:
(24MHz * 28 * 3) / 2 = 792MHz
Changing k to 4 satisfies both system clocks:
(24E6 * 21 * 4) / 2 = 1008MHz
(24E6 * 17 * 4) / 2 = 816MHz
Signed-off-by: Stefan Mavrodiev <stefan@olimex.com>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
DE2 SoCs can support LCDs up to 1080p (e.g. A64), and 3MHz step won't
let PLL_VIDEO be high enough for them.
Use 6MHz step for PLL_VIDEO when using DE2, to satisfy 1080p LCD.
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Tested-by: Vasily Khoruzhick <anarsoul@gmail.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Acked-by: Jagan Teki <jagan@openedev.com>
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry. Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.
In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.
This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents. There's also a few places where I found we did not have a tag
and have introduced one.
Signed-off-by: Tom Rini <trini@konsulko.com>
The PRCM of H3/H5 SoCs have a secure/non-secure switch, which controls
the access to some clock/power related registers in PRCM.
Current Linux kernel will access the CPUS (AR100) clock in the PRCM
block, so the PRCM should be switched to non-secure.
Add code to switch the PRCM to non-secure.
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Tested-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Jagan Teki <jagan@openedev.com>
R40 has a similar SATA controller with the ones on A10/A20, but with a
reset line added (like other peripherals on sun6i+), and two extra VDD
pins added (1.2v and 2.5v).
Add clock configuration of R40 SATA.
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
This is needed for HDMI, which will be added later.
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The R40 seems to have a variant of the memory controller found in
the H3 and A64 SoCs. Adapt the code for use on the R40. The changes
are based on released DRAM code and comparing register dumps from
boot0.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
According to the BSP released by Banana Pi, the R40 (sun8iw11p1) has
an extra "PLL lock control" register in the CCU, which controls whether
the individual PLL lock status bits in each PLL's control register work
or not.
This patch enables it for all the PLLs.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The Allwinner H5 is very close to the H3 SoC, but has ARMv8 cores.
To allow sharing the clocks, GPIO and driver code easily, create an
architecture agnostic MACH_SUNXI_H3_H5 Kconfig symbol.
Rename the existing symbol to MACH_SUNXI_H3_H5 where code is shared and
let it be selected by a new shared Kconfig option.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The A64 DRAM controller is very similar to the H3 one,
so the code can be reused with some small changes.
This refactoring does not change the code size for the existing H3 part.
[Andre: rework from #ifdefs to using socid parameters in static
functions, minor fixes, merging in fixes from Jens]
Signed-off-by: Jens Kuske <jenskuske@gmail.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
These days many Allwinner SoCs use clock_sun6i.c, although out of them
only the (original sun6i) A31 has a second MBUS clock register.
Also the requirement for setting up the PRCM PLL_CTLR1 register to provide
the proper voltage seems to be a property of older SoCs only as well.
Restrict the MBUS initialization to this SoC only to avoid writing bogus
values to (undefined) registers in other chips.
I can only verify that the PLL voltage setup is not needed for H3 and
A64, so for now we only spare those two SoCs.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
The H3 PLL5 used for DRAM barely manages to lock to the required
frequency before DRAM controller starts, sometimes leading to wrong
delay-line calibration results.
This patch changes the PLL tuning parameters to the same values as
boot0 used, which speeds up the locking and fixes the problem.
Signed-off-by: Jens Kuske <jenskuske@gmail.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Some of the code in arch/arm/cpu/armv7/sunxi is actually armv7 specific, while
most of it is just generic code that could as well be used on an AArch64 SoC.
Move all files that are not really tied to armv7 into a new mach-sunxi
directory.
Signed-off-by: Alexander Graf <agraf@suse.de>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2016-04-01 09:52:28 +02:00
Renamed from arch/arm/cpu/armv7/sunxi/clock_sun6i.c (Browse further)
