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Revision as of 06:09, 13 November 2017 by Geert (talk | contribs) (Add Suspend-to-RAM, incl. Wake-Up Sources)
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This is the Wiki for the Renesas SH-Mobile AG5-based Kyoto Microcomputer Co. KZM-A9-GT board. Refer to the R-Mobile page for information about Renesas' SH-Mobile SoC family.

Serial Console

Use a mini-USB cable to connect to "CN22". Serial settings are 115200 8N1.

Booting Linux

 * Kernel config: shmobile_defconfig
 * Kernel image: arch/arm/boot/zImage.dtb
 * DTB: arch/arm/boot/dts/sh73a0-kzm9g.dtb

Create a zImage with appended DTB:

make zImage dtbs
cat arch/arm/boot/zImage arch/arm/boot/dts/sh73a0-kzm9g.dtb > arch/arm/boot/zImage.dtb

U-Boot boot command:

tftp 0x43000000 kzm9g/zImage.dtb 



The system can be suspended using:

echo mem > /sys/power/state

Wake-Up Sources

Suspend-to-RAM supports the following wake-up sources:

  • gpio-keys: Wake-up using push button SW1 or NMI.
  • sh-sci (Serial): Disabled by default
  • st1232 (Touchscreen): Tap the display to wake-up

Remote Control

Operation Signal A Pin A Signal B Pin B Connector needed Comments
Reset JTAG nSRST CN1 pin 15 GND CN1 pin 16 2-pin female Mini-PV nSRST is an 1.8V signal!
Wake-Up NMI SW6 GND SW6 - Needs soldering