linux-kernel - [PATCH 3.19.y-ckt 45/92] ARM: mvebu: armada-xp-openblocks-ax3-4: Disable internal RTC

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Message-Id: <1432654896-28478-46-git-send-email-kamal@canonical.com>
Date:	Tue, 26 May 2015 08:40:49 -0700
From:	Kamal Mostafa <kamal@...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>,
	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 3.19.y-ckt 45/92] ARM: mvebu: armada-xp-openblocks-ax3-4: Disable internal RTC

3.19.8-ckt1 -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: Kamal Mostafa <kamal@...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 6f6b091..101c1ec 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";
 			};
-- 
1.9.1

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