FreeCalypso > hg > freecalypso-tools
changeset 500:a04a145098f1
target-utils: poweroff command does VRPCAUX cleanup for nTESTRESET
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Sat, 25 May 2019 22:35:51 +0000 |
| parents | 44a1de4264d8 |
| children | 7a6eba04c1bb |
| files | target-utils/libbase/abbdrv.c |
| diffstat | 1 files changed, 9 insertions(+), 1 deletions(-) [+] |
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--- a/target-utils/libbase/abbdrv.c Sat May 25 22:20:34 2019 +0000 +++ b/target-utils/libbase/abbdrv.c Sat May 25 22:35:51 2019 +0000 @@ -115,8 +115,16 @@ abb_power_off() { abb_init(); + /* + * If we booted via nTESTRESET, we need to clean up some state + * in a secret undocumented Iota register before we do the DEVOFF, + * otherwise subsequent switch-on via regular PWON button + * won't work correctly. + */ + abb_unlock_page2(); + abb_reg_write(VRPCAUX, 0x07); serial_flush(); - abb_reg_write(VRPCDEV, 0x01); + abb_reg_write(VRPCDEV, 0x01); /* DEVOFF */ /* * TWL3025 datasheet seems to indicate that the time for the DEVOFF * command to take effect is 5 cycles of the 32.768 kHz clock.