ARM: dts: imx6qdl: Allow disabling the PU regulator, add a enable ramp delay

The PU regulator is enabled during boot, but not necessarily always-on.
It can be disabled by the generic pm domain framework when the PU power
domain is shut down. The ramp delay of 150 us might be a bit conservative,
the value is taken from the Freescale kernel.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

diff --git a/arch/arm/boot/dts/imx6qdl.dtsi b/arch/arm/boot/dts/imx6qdl.dtsi
index 76f4997..82dd005 100644 (file)
--- a/arch/arm/boot/dts/imx6qdl.dtsi
+++ b/arch/arm/boot/dts/imx6qdl.dtsi
@@ -600,7 +600,7 @@
                                        regulator-name = "vddpu";
                                        regulator-min-microvolt = <725000>;
                                        regulator-max-microvolt = <1450000>;
-                                       regulator-always-on;
+                                       regulator-enable-ramp-delay = <150>;
                                        anatop-reg-offset = <0x140>;
                                        anatop-vol-bit-shift = <9>;
                                        anatop-vol-bit-width = <5>;