2125212785
The patch adds the following interfaces according the SMARC Spec 1.1
[1] and provided schematics:
- SMARC SPI0/1
Note: Since Kontron still uses silicon revisions below 1.3 they have
add a spi-nor to implement Workaround #1 of erratum ERR006282.
- SMARC SDIO
- SMARC LCD
- SMARC HDMI
- SMARC Management pins
Note: Kontron don't route all of these pins to the i.MX6, some are
routed to the SoM CPLD.
- SMARC GPIO
- SMARC CSI Camera
Note: As specified in [1] the data lanes are shared to cover the
csi and the parallel case. The case depends on the baseboard so
muxing the data lanes is not part of this patch.
- SMARC I2S
- SMARC Watchdog
Note: The watchdog output pin is routed to the CPLD and the SMARC
header. The CPLD performs a reset after a 30s timeout so we
need to enable the watchdog per default.
- SMARC module eeprom
Due to the lack of hardware not all of these interfaces are tesetd.
[1] https://sget.org/standards/smarc
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.