linux-kernel - [PATCH 3.19.y-ckt 178/210] ARM: dts: armadillo800eva Correct extal1 frequency to 24 MHz

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Message-Id: <1454030348-17736-179-git-send-email-kamal@canonical.com>
Date:	Thu, 28 Jan 2016 17:18:36 -0800
From:	Kamal Mostafa <kamal@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Geert Uytterhoeven <geert+renesas@...der.be>,
	Simon Horman <horms+renesas@...ge.net.au>,
	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 3.19.y-ckt 178/210] ARM: dts: armadillo800eva Correct extal1 frequency to 24 MHz

3.19.8-ckt14 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: Geert Uytterhoeven <geert+renesas@...der.be>

commit c61f30a255550bbfc6b83c1ca720661489cac4c0 upstream.

On r8a7740/armadillo, actual clock rates are ca. 4% lower than reported
by /sys/kernel/debug/clk/clk_summary. Correct the extal1 frequency from
25 MHz to 24 MHz to fix this.

This matches the Armadillo-800 EVA Product Manual, which claims the main
crystal runs at 24 MHz, and the old legacy/reference board code.

Fixes: 25aa7ba3fdfb ("ARM: shmobile: armadillo800eva: Sync DTS")
Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
Signed-off-by: Simon Horman <horms+renesas@...ge.net.au>
Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
 arch/arm/boot/dts/r8a7740-armadillo800eva.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/r8a7740-armadillo800eva.dts b/arch/arm/boot/dts/r8a7740-armadillo800eva.dts
index d4af4d8..4fd13c3 100644
--- a/arch/arm/boot/dts/r8a7740-armadillo800eva.dts
+++ b/arch/arm/boot/dts/r8a7740-armadillo800eva.dts
@@ -180,7 +180,7 @@
 };
 
 &extal1_clk {
-	clock-frequency = <25000000>;
+	clock-frequency = <24000000>;
 };
 &extal2_clk {
 	clock-frequency = <48000000>;
-- 
1.9.1