Commit graph

15 commits

Author SHA1 Message Date
Masahiro Yamada
351b74cb6d ARM: uniphier: use FIELD_GET() to get access to revision register fields
Define register fields as macros, and use FIELD_GET().

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2020-08-18 02:01:14 +09:00
Masahiro Yamada
34ded87506 ARM: uniphier: detect register base addresses run-time
Until the last SoC, the register addresses have been hard-coded because
they are always constant. For a planned new SoC, the register bases
will be completely changed. I insist on supporting multiple SoCs/boards
by a single defconfig (uniphier_v8_defconfig) since duplicating similar
defconfig files is a maintenance burden. The base addresses must be
fixed-up at run-time somehow.

Previously, the board init code identified the SoC by reading out the
SG_REVISION register. This is much easier than parsing DT.

You cannot do it any more because the base address of SG will be
changed. The SG_REVISION register exists to read out the SoC ID, but
you never know its address before identifying the SoC. Oh well.

So, the possible solution is to parse the DT, and find out the node
with "*-soc-glue" compatible string. Then, sg_base is set to the value
of the "reg" property. The sc_base is set up likewise.

It is worth noting a pit-fall. Having sc_base and sg_base in the global
scope will make the life easier, but the global variables are poorly
supported before the relocation. In fact, the .bss section overwraps
with DT. Allocating them in the .bss section would break DT. So, I gave
dummy initializers to assign them in the .data section.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2019-07-10 22:42:03 +09:00
Masahiro Yamada
d41b358fb3 ARM: uniphier: de-couple SG macros into base address and offset
The SG_* macros represent the address of SoC-glue registers.
For a planned new SoC, its base address will be changed.

Turn the SG_* macros into the offset from the base address.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2019-07-10 22:42:00 +09:00
Masahiro Yamada
69492fb4c5 ARM: uniphier: move sg_set_{pinsel, iectrl} to more relevant places
Move the sg_set_pinsel macro to arch/arm/mach-uniphier/arm32/debug_ll.S
since it is not used anywhere else.

Move the C functions sg_set_{pinsel,iectrl} to debug-uart.c since they
are not used anywhere else.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2019-06-29 22:31:18 +09:00
Masahiro Yamada
139a94a986 ARM: uniphier: remove unused sg_set_iectrl_range()
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2019-06-29 22:31:16 +09:00
Tom Rini
83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
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>
2018-05-07 09:34:12 -04:00
Masahiro Yamada
81afa9c9a3 ARM: uniphier: add more init code for PXs3
Add the boot device table and reset deassertion for eMMC.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-05-17 21:56:17 +09:00
Masahiro Yamada
395e2142e4 ARM: uniphier: setup EHCI PHY paramters for LD11
Set the same PHY parameters as the Boot ROM uses.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-04-20 23:49:50 +09:00
Masahiro Yamada
e27d6c7d32 ARM: uniphier: simplify SoC ID get function
Currently, uniphier_get_soc_type() converts the SoC ID (this is
read from the revision register) to an enum symbol to use it for SoC
identification.  Come to think of it, there is no need for the
conversion in the first place.  Using the SoC ID from the register
as-is a straightforward way.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-01-22 16:49:27 +09:00
Masahiro Yamada
667dbcd01d ARM: uniphier: add PH1-LD11 SoC support
This is a low-cost ARMv8 SoC from Socionext Inc.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-05-26 00:37:13 +09:00
Masahiro Yamada
9d0c2ceb35 ARM: uniphier: add PH1-LD20 SoC support
This is the first ARMv8 SoC from Socionext Inc.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-04-24 09:54:08 +09:00
Masahiro Yamada
612ccd9001 ARM: uniphier: add sg_set_iectrl_range()
For PH1-LD20 or later, per-pin input-enable control is supported,
that is, we need to set-up IECTRL registers for a group of pins.
This helper function will be useful for a bunch of register settings.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-04-24 09:53:57 +09:00
Masahiro Yamada
c8cc7213a5 ARM: uniphier: add sg_set_iectrl() function
This helper function would be useful for new SoCs with per-pin
input enable controlling, such as PH1-LD20, PH1-LD11, etc.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-03-24 01:45:21 +09:00
Masahiro Yamada
11d3ede42c ARM: uniphier: fix warnings reported by aarch64 compiler
The UniPhier SoC family has not supported ARMv8 yet, but these would
cause warnings if they were compiled with a 64bit compiler.  Before
adding the ARMv8 support really, fix them now.

Because UniPhier SoCs do not support Large Physical Address Extension,
casting "phys_addr_t" into "unsigned long" would carry the address
as is.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-03-01 00:33:29 +09:00
Masahiro Yamada
107b3fb484 ARM: uniphier: move headers out of include/mach directory
These headers are only included locally in arch/arm/mach-uniphier/.
There is no reason to export them by putting in the mach/ directory.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-01-13 01:54:53 +09:00
Renamed from arch/arm/mach-uniphier/include/mach/sg-regs.h (Browse further)