The usage of the C keyword "inline" seems to be a common
misunderstanding: it's a *hint* only, and modern compilers will inline
(or not) functions based on their own judgement and provided compiler
options.
So while marking functions as "inline" does not do much, missing the
"static" keyword will force to compiler to spell out a version of the
function for potential external callers, which actually increases the
code size (though hopefully the linker will drop the function).
Change the "inline" attribute for the mbus_configure_port() functions in
some Allwinner DRAM drivers to "static", so that the explicit version
can actually be dropped from the object file, reducing the code size.
"static inline" has a use case in header files, where it avoids a warning
if a .c file including this header does not use the particular function.
In a .c file itself "static inline" is not useful otherwise, so just use
static here as well.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
The rest of the unmigrated CONFIG symbols in the CONFIG_SYS_SDRAM
namespace do not easily transition to Kconfig. In many cases they likely
should come from the device tree instead. Move these out of CONFIG
namespace and in to CFG namespace.
Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Previously we do not have proper dual rank memory detection on R40
(because we omitted PIR_QSGATE, which does not work on R40 with our
configuration), and dual rank memory is just simply disabled as early
R40 boards available (Banana Pi M2 Ultra and Berry) have single rank
memory.
As a board with dual rank memory (Forlinx OKA40i-C) is now known to us,
we need to have a way to do memory rank detection to support that board.
Add some routine to detect memory rank by trying to access the memory
in rank 1 and check for error status of the memory controller, and then
enable dual rank memory on R40.
Similar routine can be used to detect half DQ width (which is also
detected by PIR_QSGATE on other SoCs), but it's left unimplemented
because there's no known R40 board with half DQ width now.
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
[Andre: Move R40 detect code call into sunxi_dram_init()]
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Previously we have known that R40 has a configuration register for its
rank 1, which allows different configuration than rank 0. Reverse
engineering of newest libdram of A64 from Allwinner shows that A64 has
this register too. It's bit 0 (which enables dual rank in rank 0
configuration register) means a dedicated rank size setup is used for
rank 1.
Now, Pine64 scheduled to use a 3GiB LPDDR3 DRAM chip (which has 2GiB
rank 0 and 1GiB rank 1) on PinePhone, that makes asymmetric dual rank
DRAM support necessary.
Add this support. The code could support both A64 and R40, but because
dual rank detection is broken on R40 now, we cannot really use it on R40
currently.
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Previously, because we have no source code about the DRAM initialization
of V3s and missing some configurations (delays and MBUS QoS info), our
V3s DRAM initialization sequence is hacked from the H3 one.
As the SDK shipped with PineCube contains source code for V3s libdram,
we can retrieve these information from it and tweak some other magic
bits.
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
When compiling with CONFIG_SPL_SERIAL=n, gcc warns about
mbus_configure_port not being marked as static:
In file included from include/common.h:34,
from arch/arm/mach-sunxi/dram_sunxi_dw.c:11:
include/log.h:185:4: warning: 'printf' is static but used in inline function 'mbus_configure_port' which is not static
185 | printf(pr_fmt(fmt), ##args); \
| ^~~~~~
include/log.h:192:2: note: in expansion of macro 'debug_cond'
192 | debug_cond(_DEBUG, fmt, ##args)
| ^~~~~~~~~~
arch/arm/mach-sunxi/dram_sunxi_dw.c💯2: note: in expansion of macro 'debug'
100 | debug("MBUS port %d cfg0 %08x cfg1 %08x\n", port, cfg0, cfg1);
| ^~~~~
Fix this by updating the function accordingly.
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.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>
Some A64 boards (SoPine and Pinebook production batch) use LPDDR3 DRAM
chips.
Add support for LPDDR3 DRAM in the DesignWare-like DRAM controller code.
Real LPDDR3 chips' support is not added yet in this commit.
Signed-off-by: Icenowy Zheng <icenowy@aosc.xyz>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com>
Allwinner V3s features a DRAM controller like the on in H3, but with a
DDR2 DRAM.
Add support for it.
Signed-off-by: Icenowy Zheng <icenowy@aosc.xyz>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com>
Allwinner V3s SoC features a co-packaged DDR2 DRAM chip, which needs its
timing param.
Add support for it.
Signed-off-by: Icenowy Zheng <icenowy@aosc.xyz>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com>
The DesignWare-like DRAM code used to set the controller defaultly to
single rank mode, which makes it not able to detect the second rank.
Set the default value to dual rank, thus the rank detection code can
work and finally the rank setting will be the correct value.
Currently we know little about the dual-rank on R40, and the usage
of A15 address line seems to be breaking dual-rank support. The only R40
board currently available (Sinovoip Banana Pi M2 Ultra) uses A15 rather
than dual-rank, thus we cannot do research for it. So dual rank detection
is temporarily disabled on R40.
This change is tested on a Orange Pi One (H3, single rank), a Pine64+
2GiB version (A64, single rank) , a Pinebook early prototype with DDR3
(A64, dual rank) and a SoPine with some LPDDR3 patch (A64, dual CS pins
on one chip).
Signed-off-by: Icenowy Zheng <icenowy@aosc.xyz>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com>
DRAM chip varies, and one code cannot satisfy all DRAMs.
Add options to select a timing set.
Currently only DDR3-1333 (the original set) is added into it.
Signed-off-by: Icenowy Zheng <icenowy@aosc.xyz>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com>
Some DDR2 DRAM have only four banks, not eight.
Add code to detect this situation.
Signed-off-by: Icenowy Zheng <icenowy@aosc.xyz>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com>
Some Allwinner SoCs features a DesignWare-like controller with only 16
bit bus width.
Add support for them.
Signed-off-by: Icenowy Zheng <icenowy@aosc.xyz>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com>
The DesignWare DRAM controller used by H3 and newer SoCs use a bit to
identify whether the DRAM is half-width.
As H3 itself come with 32-bit DRAM, the two modes of the bit used to be
named "MCTL_CR_32BIT" and "MCTL_CR_16BIT", but for SoCs with 16-bit DRAM
they're really 8-bit and 16-bit.
Rename the bit's macro, and also rename the variable name in
dram_sun8i_h3.c.
This commit do not add 16-bit DRAM controller support, but the support
will be introduced in next commit.
Signed-off-by: Icenowy Zheng <icenowy@aosc.xyz>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com>
Allwinner SoCs after H3 (e.g. A64, H5, R40, V3s) uses a H3-like
DesignWare DRAM controller, which do not have official free DRAM
initialization code, but can use modified dram_sun8i_h3.c.
Add a invisible option for easier DRAM initialization code reuse.
Signed-off-by: Icenowy Zheng <icenowy@aosc.xyz>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com>
2017-06-08 22:37:55 +05:30
Renamed from arch/arm/mach-sunxi/dram_sun8i_h3.c (Browse further)
