[Letux-kernel] [Internal RFC 12/16] arm: dts: twl4030: add twl4030-regen child

[H. Nikolaus Schaller]

From: Grond <grond66 at riseup.net>

This is needed on some boards (for example, the Pandora), where REGEN is
used to drive external regulators.

Signed-off-by: Grond <grond66 at riseup.net>
---
 arch/arm/boot/dts/twl4030.dtsi | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/arm/boot/dts/twl4030.dtsi b/arch/arm/boot/dts/twl4030.dtsi
index 93e07c18781b5..42b2047f81824 100644
--- a/arch/arm/boot/dts/twl4030.dtsi
+++ b/arch/arm/boot/dts/twl4030.dtsi
@@ -112,6 +112,20 @@ vsim: regulator-vsim {
 		regulator-max-microvolt = <3000000>;
 	};
 
+	regen: regulator-regen {
+		compatible = "ti,twl4030-regen";
+		/*
+		 * Since REGEN is technically just a signal that actuates an
+		 * external regulator, we do not know what voltage it will
+		 * eventually have, or what it's on/off timing should be.
+		 * Therefore, disable it here; boards that use it can override
+		 * the status to "okay" once they have set the
+		 * regulator-{min,max}-microvolt and startup-delay-us
+		 * attributes.
+		 */
+		status = "disabled";
+	};
+
 	twl_gpio: gpio {
 		compatible = "ti,twl4030-gpio";
 		gpio-controller;
-- 
2.33.0