linux-kernel - [RFC v4 13/14] ARM: dts: exynos: Switch the buck8 to GPIO mode on Odroid U3

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Message-id: <1465465471-28740-14-git-send-email-k.kozlowski@samsung.com>
Date:	Thu, 09 Jun 2016 11:44:30 +0200
From:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
To:	Ulf Hansson <ulf.hansson@...aro.org>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	Sebastian Reichel <sre@...nel.org>,
	Dmitry Eremin-Solenikov <dbaryshkov@...il.com>,
	David Woodhouse <dwmw2@...radead.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Hans de Goede <hdegoede@...hat.com>,
	Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>,
	Tomi Valkeinen <tomi.valkeinen@...com>,
	Heiko Stuebner <heiko@...ech.de>, linux-mmc@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org, linux-pm@...r.kernel.org,
	linux-usb@...r.kernel.org, linux-fbdev@...r.kernel.org,
	hzpeterchen@...il.com
Cc:	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Subject: [RFC v4 13/14] ARM: dts: exynos: Switch the buck8 to GPIO mode on
 Odroid U3

Switch the control of buck8 to GPIO mode. It is faster than I2C/register
mode and it is the easiest way to disable it (regulator state is a
logical OR state of GPIO and register value).

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
Reviewed-by: Javier Martinez Canillas <javier@....samsung.com>
---
 arch/arm/boot/dts/exynos4412-odroidu3.dts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/boot/dts/exynos4412-odroidu3.dts b/arch/arm/boot/dts/exynos4412-odroidu3.dts
index d73aa6c58fe3..31cdc036fda4 100644
--- a/arch/arm/boot/dts/exynos4412-odroidu3.dts
+++ b/arch/arm/boot/dts/exynos4412-odroidu3.dts
@@ -74,6 +74,7 @@
 	regulator-name = "BUCK8_P3V3";
 	regulator-min-microvolt = <3300000>;
 	regulator-max-microvolt = <3300000>;
+	maxim,ena-gpios = <&gpa1 1 GPIO_ACTIVE_HIGH>;
 };
 
 /* VDDQ for MSHC (eMMC card) */
-- 
1.9.1