linux-kernel - [PATCH 3.12 126/142] ARM: mvebu: armada-xp-openblocks-ax3-4: Disable internal RTC

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Message-Id: <bce4dcf9b23201c4ccd6a87cbe95b5dc8b9e0581.1431761807.git.jslaby@suse.cz>
Date:	Sat, 16 May 2015 09:38:06 +0200
From:	Jiri Slaby <jslaby@...e.cz>
To:	stable@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org,
	Gregory CLEMENT <gregory.clement@...e-electrons.com>,
	Jiri Slaby <jslaby@...e.cz>
Subject: [PATCH 3.12 126/142] ARM: mvebu: armada-xp-openblocks-ax3-4: Disable internal RTC

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

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

===============

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: Jiri Slaby <jslaby@...e.cz>
---
 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 d6cce8aa8c68..3db86a6ec91b 100644
--- a/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts
+++ b/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts
@@ -69,6 +69,10 @@
 		};
 
 		internal-regs {
+			rtc@...00 {
+				/* No crystal connected to the internal RTC */
+				status = "disabled";
+			};
 			serial@...00 {
 				clock-frequency = <250000000>;
 				status = "okay";
-- 
2.3.7

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