u-boot.git/board/synopsys/iot_devkit, branch v2020.01

arc: emsdp/iotdk: Switch to DM_MMC

2019-11-01T13:45:40+00:00

Somehow EMSDP & IoT DK boards were skipped on ARC boads conversion
to DM MMC. So doing it now.

Signed-off-by: Alexey Brodkin

arc: Get rid of board-specific print_cpuinfo()

2018-12-03T11:26:26+00:00

Since we now do advanced CPU identification in
generic ARC code there's no need to have per-board
hardcoded data.

Signed-off-by: Alexey Brodkin

iot_dk: Add README

2018-11-01T20:04:05+00:00

Signed-off-by: Alexey Brodkin

axs10x/emdk/hsdk/iot_dk: Implement board_mmc_getcd()

2018-10-12T12:14:41+00:00

So now we may detect MMC/SD-card existence and
instead of completely misleading message on missing card:
------------------------>8-----------------------
Loading Environment from FAT... Card did not respond to voltage select!
------------------------>8-----------------------

we now get very clear one:
------------------------>8-----------------------
Loading Environment from FAT... MMC: no card present
------------------------>8-----------------------

Signed-off-by: Alexey Brodkin

iot_dk: Save CPU clock value to gd->cpu_clk

2018-10-12T12:14:41+00:00

Since gd->cpu_clk is a global item we may once populate it from .dtb
ans use it then in other places like for printing CPU info etc.

Signed-off-by: Alexey Brodkin

iot_dk: Add support of 136 MHz clock

2018-10-12T12:14:41+00:00

Signed-off-by: Alexey Brodkin

iot_dk: Implement board reset

2018-10-12T12:14:41+00:00

It is done by writing some magic sequence in a special register.

Signed-off-by: Alexey Brodkin

iot_dk/hsdk: Implement its own print_cpuinfo()

2018-10-12T12:14:41+00:00

ARC IDENTITY register only encodes major architecture
type and version while for a particular board/silicon we
may know better which template was used and so we may identify
CPU more precise, which exactly we do here.

Signed-off-by: Alexey Brodkin

arc: Add support for IoT development kit

2018-10-05T13:57:00+00:00

The DesignWare ARC IoT Development Kit is a versatile platform
that includes the necessary hardware and software to accelerate
software development and debugging of sensor fusion,
voice recognition and face detection designs.

More information is avaialble here [1] and here [2].

The board is based on real silicon with
ARC EM9D-based Data Fusion IP Subsystem.

It sports a rich set of I/O including
 * DW USB OTG
 * DW MobileStorage (used for micro SD-card)
 * GPIO
 * multiple serial interface including DW APB UART
 * ADC, PWM and eFlash, SRAM and SPI Flash memory
 * Real-Time Clock (RTC)
 * Bluetooth module with worldwide regulatory compliance
   (FCC, IC, CE, ETSI, TELEC)
 * On-board 9-axis sensor (gyro, accelerometer and compass)

Extensible with Arduino, Pmod, mikroBUS connectors and a 2x18
extension header.

One of the most interesting features for developers is built-in
Digilent USB JTAG probe so only micro-USB cable is needed!

[1] https://www.synopsys.com/dw/ipdir.php?ds=arc_iot_development_kit
[2] https://www.synopsys.com/dw/doc.php/ds/cc/iot_dev_kit.pdf

Signed-off-by: Alexey Brodkin