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| author | Tony Lindgren <tony@atomide.com> | 2014-05-13 18:34:09 -0700 |
|---|---|---|
| committer | Lee Jones <lee.jones@linaro.org> | 2014-05-28 08:06:18 +0100 |
| commit | 43fef47f94a1ae46fb2720dada32fa3b5547bee2 (patch) | |
| tree | f01e73e8aed5a4fb21a6a46314a6a105fb614627 /Documentation | |
| parent | 482e7db160df713a2d1d4c7ee9fffad92008283f (diff) | |
| download | op-kernel-dev-43fef47f94a1ae46fb2720dada32fa3b5547bee2.zip op-kernel-dev-43fef47f94a1ae46fb2720dada32fa3b5547bee2.tar.gz | |
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 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/mfd/twl4030-power.txt | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mfd/twl4030-power.txt b/Documentation/devicetree/bindings/mfd/twl4030-power.txt index bbd6603..b9ee7b9 100644 --- a/Documentation/devicetree/bindings/mfd/twl4030-power.txt +++ b/Documentation/devicetree/bindings/mfd/twl4030-power.txt @@ -9,6 +9,7 @@ Required properties: "ti,twl4030-power" "ti,twl4030-power-reset" "ti,twl4030-power-idle" + "ti,twl4030-power-idle-osc-off" The use of ti,twl4030-power-reset is recommended at least on 3530 that needs a special configuration for warm reset to work. @@ -16,6 +17,11 @@ The use of ti,twl4030-power-reset is recommended at least on When using ti,twl4030-power-idle, the TI recommended configuration for idle modes is loaded to the tlw4030 PMIC. +When using ti,twl4030-power-idle-osc-off, the TI recommended +configuration is used with the external oscillator being shut +down during off-idle. Note that this does not work on all boards +depending on how the external oscillator is wired. + Optional properties: - ti,use_poweroff: With this flag, the chip will initiates an ACTIVE-to-OFF or SLEEP-to-OFF transition when the system poweroffs. |
