[PATCH 04/16] arm: dts: omap3pandora: Populate DT data for the TWL4030's REGEN regulator
"H. Nikolaus Schaller" <[email protected]>
| Newsgroups | dev.linux.lists.mfd,org.freedesktop.lists.dri-devel,org.infradead.lists.linux-arm-kernel,org.kernel.vger.linux-devicetree,org.kernel.vger.linux-fbdev,org.kernel.vger.linux-kernel,org.kernel.vger.linux-omap,org.kernel.vger.linux-sound |
|---|---|
| Message-ID | <d0b2a73c7c208f33784eae4219ff3981800ae6f9.1783749722.git.hns@goldelico.com> |
From: Grond <[email protected]> On the Pandora, REGEN is used to enable TPS61029DRC external regulator which runs a 5V power rail. The 5ms startup delay is taken from Pandora's 3.2 kernel, where it is labeled as a "guess". So it may be possible to activate the regulator faster. On Pandora CC units, this regulator is used as the input to the LCD power supply. Therefore, problems are likely to arise if the regulator is ever disabled, so we add the regulator-always-on property to compensate. Signed-off-by: Grond <[email protected]> Signed-off-by: H. Nikolaus Schaller <[email protected]> --- arch/arm/boot/dts/ti/omap/omap3-pandora-common.dtsi | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/arm/boot/dts/ti/omap/omap3-pandora-common.dtsi b/arch/arm/boot/dts/ti/omap/omap3-pandora-common.dtsi index 06c5b23589991..a0116823ffdef 100644 --- a/arch/arm/boot/dts/ti/omap/omap3-pandora-common.dtsi +++ b/arch/arm/boot/dts/ti/omap/omap3-pandora-common.dtsi @@ -486,6 +486,14 @@ &vsim { regulator-always-on; }; +®en { + regulator-min-microvolt = <5000000>; + regulator-max-microvolt = <5000000>; + startup-delay-us = <5000>; + regulator-always-on; + status = "okay"; +}; + &i2c2 { clock-frequency = <100000>; /* no clients so we should disable clock */ -- 2.50.1 (Apple Git-155)