linux-kernel - [PATCH 4.2 108/120] ARM: dts: fix clock-frequency of display timing0 for exynos3250-rinato

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Message-Id: <20150919171730.714551957@linuxfoundation.org>
Date:	Sat, 19 Sep 2015 10:29:08 -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, Hyungwon Hwang <human.hwang@...sung.com>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>
Subject: [PATCH 4.2 108/120] ARM: dts: fix clock-frequency of display timing0 for exynos3250-rinato

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

------------------

From: Hyungwon Hwang <human.hwang@...sung.com>

commit 65e3293381e1cf1abcfe1aa22b914650a40e3af4 upstream.

After the commit abc0b1447d49 ("drm: Perform basic sanity checks on
probed modes"), proper clock-frequency becomes mandatory for
validating the mode of panel.  The display does not work if there is
no mode validated. Also, this clock-frequency must be set
appropriately for getting required frame rate.

Fixes: abc0b1447d49 ("drm: Perform basic sanity checks on probed modes")
Signed-off-by: Hyungwon Hwang <human.hwang@...sung.com>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
Sigend-off-by: Kukjin Kim <kgene@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/arm/boot/dts/exynos3250-rinato.dts |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/arm/boot/dts/exynos3250-rinato.dts
+++ b/arch/arm/boot/dts/exynos3250-rinato.dts
@@ -182,7 +182,7 @@
 
 		display-timings {
 			timing-0 {
-				clock-frequency = <0>;
+				clock-frequency = <4600000>;
 				hactive = <320>;
 				vactive = <320>;
 				hfront-porch = <1>;


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