linux-kernel - [PATCH 3.16.y-ckt 077/129] ARM: mvebu: armada-xp-openblocks-ax3-4: Disable internal RTC

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Message-Id: <1432285114-9254-78-git-send-email-luis.henriques@canonical.com>
Date:	Fri, 22 May 2015 09:57:42 +0100
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Gregory CLEMENT <gregory.clement@...e-electrons.com>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 3.16.y-ckt 077/129] ARM: mvebu: armada-xp-openblocks-ax3-4: Disable internal RTC

3.16.7-ckt12 -stable review patch.  If anyone has any objections, please let me know.

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

From: Gregory CLEMENT <gregory.clement@...e-electrons.com>

commit 750e30d4076ae5e02ad13a376e96c95a2627742c upstream.

There is no crystal connected to the internal RTC on the Open Block
AX3. So let's disable it in order to prevent the kernel probing the
driver uselessly. Eventually this patches removes the following
warning message from the boot log:
"rtc-mv d0010300.rtc: internal RTC not ticking"

Acked-by: Andrew Lunn <andrew@...n.ch>
Signed-off-by: Gregory CLEMENT <gregory.clement@...e-electrons.com>
Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
 arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts b/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts
index 4e5a59ee1501..db06fa397f79 100644
--- a/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts
+++ b/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts
@@ -71,6 +71,10 @@
 		};
 
 		internal-regs {
+			rtc@...00 {
+				/* No crystal connected to the internal RTC */
+				status = "disabled";
+			};
 			serial@...00 {
 				status = "okay";
 			};
--
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