linux-kernel - [PATCH 4.10 034/129] ARM: dts: imx6sx-udoo-neo: Fix reboot hang

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Message-Id: <20170511141222.304199768@linuxfoundation.org>
Date:   Thu, 11 May 2017 16:11:22 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Fabio Estevam <fabio.estevam@....com>,
        Breno Lima <breno.lima@....com>,
        Shawn Guo <shawnguo@...nel.org>
Subject: [PATCH 4.10 034/129] ARM: dts: imx6sx-udoo-neo: Fix reboot hang

4.10-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Fabio Estevam <fabio.estevam@....com>

commit 12aff99723901bcc0e2a6a34343a4f62c371fdd9 upstream.

After issuing a 'reboot' command the imx6sx-udoo-neo board does not
reboot as expected and it just hangs instead.

In mainline kernel only LDO enabled mode is supported. Do not provide
arm-supply/soc-supply nodes in the device tree, so that the board operates
in LDO enabled mode and can then successfully reboot via watchdog.

Fixes: 76e691fc7653b85d39 ("ARM: dts: imx6sx: Add UDOO Neo support")
Signed-off-by: Fabio Estevam <fabio.estevam@....com>
Tested-by: Breno Lima <breno.lima@....com>
Signed-off-by: Shawn Guo <shawnguo@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/arm/boot/dts/imx6sx-udoo-neo.dtsi |    5 -----
 1 file changed, 5 deletions(-)

--- a/arch/arm/boot/dts/imx6sx-udoo-neo.dtsi
+++ b/arch/arm/boot/dts/imx6sx-udoo-neo.dtsi
@@ -77,11 +77,6 @@
 	};
 };
 
-&cpu0 {
-	arm-supply = <&sw1a_reg>;
-	soc-supply = <&sw1c_reg>;
-};
-
 &fec1 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_enet1>;