linux-kernel - [PATCH 3.10 10/17] ARM: mvebu: armada-xp-openblocks-ax3-4: Disable internal RTC

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Message-Id: <20150515231005.577465493@linuxfoundation.org>
Date:	Fri, 15 May 2015 16:10:18 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Andrew Lunn <andrew@...n.ch>,
	Gregory CLEMENT <gregory.clement@...e-electrons.com>
Subject: [PATCH 3.10 10/17] ARM: mvebu: armada-xp-openblocks-ax3-4: Disable internal RTC

3.10-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: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts |    4 ++++
 1 file changed, 4 insertions(+)

--- a/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts
+++ b/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts
@@ -32,6 +32,10 @@
 			  0xf0000000 0 0xf0000000 0x8000000     /* Device Bus, NOR 128MiB   */>;
 
 		internal-regs {
+			rtc@...00 {
+				/* No crystal connected to the internal RTC */
+				status = "disabled";
+			};
 			serial@...00 {
 				clock-frequency = <250000000>;
 				status = "okay";


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