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ARM: tango: add Suspend-to-RAM support

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Ask firmware to put RAM in self-refresh mode and power system down.

    echo mem > /sys/power/state

See Documentation/power/states.txt

Signed-off-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Marc Gonzalez
2016-07-07 15:08:14 +02:00
committed by Arnd Bergmann
parent 2e2843f1b7
commit a30eceb7a5
3 changed files with 34 additions and 0 deletions
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arch/arm/mach-tango/smc.h
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@@ -3,5 +3,6 @@ extern int tango_smc(unsigned int val, unsigned int service);
#define tango_set_l2_control(val) tango_smc(val, 0x102)
#define tango_start_aux_core(val) tango_smc(val, 0x104)
#define tango_set_aux_boot_addr(val) tango_smc(val, 0x105)
#define tango_suspend(val) tango_smc(val, 0x120)
#define tango_aux_core_die(val) tango_smc(val, 0x121)
#define tango_aux_core_kill(val) tango_smc(val, 0x122)