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ARM: shmobile: armadillo800eva dts: Correct extal1 frequency to 24 MHz

Message ID 20160118015502.GG1905@verge.net.au (mailing list archive)
State Accepted
Delegated to: Simon Horman
Headers show

Commit Message

Simon Horman Jan. 18, 2016, 1:55 a.m. UTC 
On Tue, Jan 05, 2016 at 02:37:07PM +0100, Geert Uytterhoeven wrote:
> On Fri, Dec 18, 2015 at 11:51 AM, Geert Uytterhoeven
> <geert+renesas@glider.be> wrote:
> > 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.
> 
> Ping? I think we want this applied to -stable and -ltsi, too.

Sorry for letting this slip through the cracks.

I have queued up the following as a fix for v4.5.

From: Geert Uytterhoeven <geert+renesas@glider.be>
Subject: [PATCH] ARM: dts: armadillo800eva Correct extal1 frequency to 24 MHz

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@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
 arch/arm/boot/dts/r8a7740-armadillo800eva.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox

Patch

diff --git a/arch/arm/boot/dts/r8a7740-armadillo800eva.dts b/arch/arm/boot/dts/r8a7740-armadillo800eva.dts
index 105d9c95de4a..5c76dcc89df5 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>;