diff options
| author | Tony Lindgren | 2014-05-13 18:34:09 -0700 |
|---|---|---|
| committer | Lee Jones | 2014-05-28 08:06:18 +0100 |
| commit | 43fef47f94a1ae46fb2720dada32fa3b5547bee2 (patch) | |
| tree | f01e73e8aed5a4fb21a6a46314a6a105fb614627 /drivers | |
| parent | 482e7db160df713a2d1d4c7ee9fffad92008283f (diff) | |
mfd: twl4030-power: Add a configuration to turn off oscillator during off-idle
Some oscillators can be turned off during off-idle saving few
a little bit power at the cost of the oscillator start up
latency.
If you board can do this, you can now enable it by using the
ti,twl4030-power-idle-osc-off compatible flag.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mfd/twl4030-power.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/mfd/twl4030-power.c b/drivers/mfd/twl4030-power.c index 4846c7b48ebb..3bc969a5916b 100644 --- a/drivers/mfd/twl4030-power.c +++ b/drivers/mfd/twl4030-power.c @@ -761,6 +761,19 @@ static struct twl4030_power_data omap3_idle = { .resource_config = omap3_idle_rconfig, }; +/* Disable 32 KiHz oscillator during idle */ +static struct twl4030_resconfig osc_off_rconfig[] = { + TWL_REMAP_OFF(RES_CLKEN, DEV_GRP_P1 | DEV_GRP_P3, 3, 2), + { /* Terminator */ }, +}; + +static struct twl4030_power_data osc_off_idle = { + .scripts = omap3_idle_scripts, + .num = ARRAY_SIZE(omap3_idle_scripts), + .resource_config = omap3_idle_rconfig, + .board_config = osc_off_rconfig, +}; + static struct of_device_id twl4030_power_of_match[] = { { .compatible = "ti,twl4030-power-reset", @@ -770,6 +783,10 @@ static struct of_device_id twl4030_power_of_match[] = { .compatible = "ti,twl4030-power-idle", .data = &omap3_idle, }, + { + .compatible = "ti,twl4030-power-idle-osc-off", + .data = &osc_off_idle, + }, { }, }; MODULE_DEVICE_TABLE(of, twl4030_power_of_match); |