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Date: Thu, 25 Oct 2012 10:57:08 +0100
From: Lee Jones <lee.jones@...aro.org>
To: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc: arnd@...db.de, linus.walleij@...ricsson.com,
Lee Jones <lee.jones@...aro.org>
Subject: [PATCH 5/8] ARM: ux500: Add node for the MMC GPIO regulator
There is a very simple mechanism to change and SDI's voltage which
consists of toggling some GPIOs. This scenario can be better handled
if we convert it to a GPIO regulator. This patch provides one which
can be read from Device Tree.
Signed-off-by: Lee Jones <lee.jones@...aro.org>
---
arch/arm/boot/dts/dbx5x0.dtsi | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/arch/arm/boot/dts/dbx5x0.dtsi b/arch/arm/boot/dts/dbx5x0.dtsi
index 07a085b..536df5d 100644
--- a/arch/arm/boot/dts/dbx5x0.dtsi
+++ b/arch/arm/boot/dts/dbx5x0.dtsi
@@ -614,5 +614,19 @@
ranges = <0 0x50000000 0x4000000>;
status = "disabled";
};
+
+ vmmci: regulator-gpio {
+ compatible = "regulator-gpio";
+
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <2600000>;
+ regulator-name = "mmci-reg";
+ regulator-type = "voltage";
+
+ gpios = <&tc3589x_gpio 18 0x4>;
+ gpio-enable = <&tc3589x_gpio 17 0x4>;
+ states = <1800000 0x1
+ 2900000 0x0>;
+ };
};
};
--
1.7.9.5
--
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