From: Magnus Damm <magnus.damm@gmail.com>
To: linux-sh@vger.kernel.org
Subject: [PATCH] sh: use 10MHz VIO_CLK for ov772x on Migo-R
Date: Wed, 22 Oct 2008 09:25:39 +0000 [thread overview]
Message-ID: <20081022092539.1072.78186.sendpatchset@rx1.opensource.se> (raw)
From: Magnus Damm <damm@igel.co.jp>
Use a slower VIO_CKO clock frequency for the ov772x on Migo-R.
This improves the camera picture quality on Panel Board V2.1.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
---
arch/sh/boards/mach-migor/setup.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- 0001/arch/sh/boards/mach-migor/setup.c
+++ work/arch/sh/boards/mach-migor/setup.c 2008-10-22 12:43:18.000000000 +0900
@@ -288,8 +288,11 @@ static struct clk *camera_clk;
static void camera_power_on(void)
{
+ /* Use 10 MHz VIO_CKO instead of 24 MHz to work
+ * around signal quality issues on Panel Board V2.1.
+ */
camera_clk = clk_get(NULL, "video_clk");
- clk_set_rate(camera_clk, 24000000);
+ clk_set_rate(camera_clk, 10000000);
clk_enable(camera_clk); /* start VIO_CKO */
/* use VIO_RST to take camera out of reset */
next reply other threads:[~2008-10-22 9:25 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-22 9:25 Magnus Damm [this message]
2008-10-22 11:12 ` [PATCH] sh: use 10MHz VIO_CLK for ov772x on Migo-R Paul Mundt
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