The ROC-RK3328-CC from Firefly and Libre Computer Project is a credit
card size development board based on the Rockchip RK3328 SoC, with:
- 1/2/4 GB DDR4 DRAM
- eMMC connector for optional module
- micro SD card slot
- 1 x USB 3.0 host port
- 2 x USB 2.0 host port
- 1 x USB 2.0 OTG port
- HDMI video output
- TRRS connector with audio and composite video output
- gigabit Ethernet
- consumer IR receiver
- debug UART pins
The ROC-RK3328-CC has the enable pin of the SD card power switch tied
to GPIO_0_D6. This pin also has the function SDMMC0_PWREN, which is
muxed by default. SDMMC0_PWREN is an active high signal controlled by
the MMC controller, however the switch enable is active low, and
pulled low (enabled) by default to make things work on boot.
As such, we need to mux away from SDMMC0_PWREN and use GPIO to enable
power to the card. The default GPIO state for the pin is pull-down and
input, which doesn't require extra configuration when paired with the
external pull-down and active low switch.
Deal with this by enabling regulator support in SPL, and setting
"u-boot,dm-spl" for the regulator and other device nodes needed for
muxing the pin.
The device tree file is synced from the Linux kernel next-20200324.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
The ROCK64 is a credit card size SBC based on Rockchip RK3328
Quad-Core ARM Cortex A53.
This series allow building u-boot SPL and u-boot.itb for Rock64
board. The proprietary TPL is stil required for deploy:
./tools/mkimage -n rk3328 -T rksd \
-d ./rkbin/bin/rk33/rk3328_ddr_333MHz_v1.16.bin idbloader.img
cat ./spl/u-boot-spl.bin >> idbloader.img
dd if=idbloader.img of=/dev/sdcard seek=64 conv=notrunc
dd if=u-boot.itb of=/dev/sdcard seek=16384 conv=notrunc
Signed-off-by: Matwey V. Kornilov <matwey.kornilov@gmail.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Update maintainer to Kever Yang for William Zhang is not
work for this board now.
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
evb-rk3328 is an evb from Rockchip based on rk3328 SoC:
- 2 USB2.0 Host port;
- 1 USB3.0 Host port;
- 1 HDMI port;
- 2 10/100M eth port;
- 2GB ddr;
- 16GB eMMC;
- UART to USB debug port;
Signed-off-by: William Zhang <william.zhang@rock-chips.com>
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Acked-by: Simon Glass <sjg@chromium.org>
