Enabling Reset button/Power button functionality on Kingfisher + M3 Starter Kit

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Reset button (SW8) and Power button (SW9) do not work when M3 starter Kit connected to Kingfisher board.

We need this in order to evaluate fastboot feature with Camera connected to Kingfisher.

Any workaround?

Note: SW8 and SW9 work fine without connecting Kingfisher board to M3 starter Kit.

[Use Case]

1. Connect M3 starter Kit to Kingfisher Advanced Model board.

2. Boot up the board.

3. Press SW9 for resetting the board, without physical power disconnection. (Volatile memory should be maintained.)

OR

1. Connect M3 starter Kit to Kingfisher Advanced Model board.

2. Boot up the board.

3. Software suspend the board. Press SW8 in order to power on the board, without physical power disconnection. (Volatile memory should be maintained.)

[Board and other env.]

Renesas RCAR M3 Starter Kit

Sample Loader V3.02 2017.07.04 (M3 Starter Kit)

MiniMonitor V3.02 2017.07.04 (M3 Starter Kit)

Kingfisher Board Version (SBEV-RCAR-KF-M05)


Thanks,

WN

18:32, 11 July 2018

According to the schematic the power supply seems to be controlled from Kingfisher(M05). I think you can not control power from SW8.

21:52, 12 July 2018

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Return to Thread:Talk:R-Car/Boards/Yocto-Gen3/Enabling Reset button/Power button functionality on Kingfisher + M3 Starter Kit/reply (2).

SW9 on Starter Kit can reset to CPU( and devices on Starter Kit). However it cannot reset to devices on Kingfisher.

Why do you need reset rather than SW6 on Kingfisher?

21:42, 26 July 2018

>>Why do you need reset rather than SW6 on Kingfisher?

We want to evaluate suspend to RAM mode of hibernation. For this, we are expecting to keep the power ON for the board so that during hibernation the contents of RAM are not lost. Software control for reset is not present so we need a RESET functionality equivalent like provided by SW8.

Also we need kingfisher board for getting CAMERA interface CN29 access to M3 target.

SW6 erases the RAM contents so we are not able to use it.

Would you please let us know any workarounds, if possible, for this use case ?

Thanks in advance.

17:11, 31 July 2018

KF doesn't support Suspend to RAM(S2R).

In order to support S2R on SK+KF, it is necessary to redesign the power control schematics on KF.
(I have never heard of such a plan.)

18:32, 31 July 2018

We understood no support considered for S2R so far. Thanks, Gohda-san, Chetan-san.

WN

04:34, 9 August 2018