R-Car/Boards/Ebisu

= Introduction =

This is the Wiki for the Renesas Ebisu (Ebisu-4D, RTP0RC77990SEB0010S) board, which is equipped with an R-Car E3 SoC. Refer to the R-Car page for information about Renesas' R-Car SoC family.

= Serial Console =

Use a micro-USB cable to connect to "Debug Serial 0" (CN25). Serial settings are 115200 8N1.

= Booting Linux =

* Kernel config: defconfig * Kernel image: arch/arm64/boot/Image * DTB: arch/arm64/boot/dts/renesas/r8a77990-ebisu.dtb

U-Boot boot command: tftpboot 0x48080000 Image tftpboot 0x49f00000 r8a77990-ebisu.dtb booti 0x48080000 - 0x49f00000

= Suspend-to-RAM =

PSCI System Suspend
The system can be suspended by triggering a PSCI System Suspend: echo mem > /sys/power/state

Caveats: echo on > /sys/bus/i2c/drivers/bd9571mwv/*/bd9571mwv-regulator*/backup_mode
 * Before you can use the above, you must configure the PMIC for DDR Backup Mode first, using the command below, followed by switching SW23 off:
 * PSCI System Suspend supports wake-up by PMIC only. Switch SW23 on to resume the system.

Suspend-to-Idle
If you want to suspend the system, and wake up through other wake-up sources, you must use Suspend-to-Idle instead of PSCI System Suspend.

The system can be suspended ("frozen") using: echo freeze > /sys/power/state

Alternatively (since v4.10), you can configure the system to use Suspend-to-Idle by default: echo s2idle > /sys/power/mem_sleep

After that, you can suspend the system using the standard: echo mem > /sys/power/state

Wake-Up Sources
Suspend-to-Idle supports the following wake-up sources:

ethtool -s eth0 wol g # Enable wake on MagicPacket ethtool -s eth0 wol d # Disable Wake-up by sending a MagicPacket from another system using: wakeonlan  |  #  must be in /etc/ethers
 * ravb (Ethernet): Configure using one of:
 * sh-sci (Serial): Disabled by default
 * usb: Disabled by default

= Remote Control =