u-boot/board/freescale/p1_p2_rdb_pc
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
..
ddr.c SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
Kconfig powerpc: P1_P2_RDB_PC: Drop TARGET_P1_P2_RDB_PC 2016-11-23 23:42:09 -08:00
law.c SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
MAINTAINERS MAINTAINERS: comment out blank M: field 2014-09-24 18:30:28 -04:00
Makefile SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
p1_p2_rdb_pc.c SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
README p1020rdb-pd: platform support 2013-08-09 12:41:40 -07:00
spl.c SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
spl_minimal.c SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
tlb.c SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00

Overview
--------
P1_P2_RDB_PC represents a set of boards including
    P1020MSBG-PC
    P1020RDB-PC
    P1020RDB-PD
    P1020UTM-PC
    P1021RDB-PC
    P1024RDB
    P1025RDB
    P2020RDB-PC

They have similar design of P1020RDB but have DDR3 instead of DDR2. P2020RDB-PC
has 64-bit DDR. All others have 32-bit DDR.

Key features on these boards include:
    * DDR3
    * NOR flash
    * NAND flash (on RDB's only)
    * SPI flash (on RDB's only)
    * SDHC/MMC card slot
    * VSC7385 Ethernet switch (on P1020MBG, P1020RDB, & P1021RDB)
    * PCIE slot and mini-PCIE slots

As these boards use soldered DDR chips not regular DIMMs, an on-board EEPROM
is used to store SPD data. In case of absent or corrupted SPD, falling back
to timing data embedded in the source code will be used. Raw timing data is
extracted from DDR chip datasheet. Different speeds of DDR are supported with
this approach. ODT option is forced to fit this set of boards, again because
they don't have regular DIMMs.

CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS is defined as 5ms to meet specification
for writing timing.

VSC firmware Address is defined by default in config file for eTSEC1.

SD width is based off DIP switch. DIP switch is detected on the
board by reading i2c bus and setting the appropriate mux values.

Some boards have QE module in the silicon (P1021 and P1025). QE and eLBC have
pins multiplexing. QE function needs to be disabled to access Nor Flash and
CPLD. QE-UEC and QE-UART can be enabled for linux kernel by setting "qe"
in hwconfig. In addition, QE-UEC and QE-TDM also have pins multiplexing, to
enable QE-TDM for linux kernel, set "qe;tdm" in hwconfig. Syntax is as below

'setenv hwconfig qe' to enable QE UEC/UART and disable Nor-Flash/CPLD.
'setenv hwconfig 'qe;tdm'' to enalbe QE TDM and disable Nor-Flash/CPLD.