From: Donghwa Lee <dh09.lee@samsung.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH V2 1/4] EXYNOS5: Change parent clock of FIMD to MPLL
Date: Mon, 17 Dec 2012 10:12:08 +0900 [thread overview]
Message-ID: <50CE7168.9060808@samsung.com> (raw)
In-Reply-To: <50CC0700.6040308@samsung.com>
On 2012? 12? 15? 14:13, Minkyu Kang wrote:
> Dear Donghwa,
>
> On 13/12/12 20:29, Ajay Kumar wrote:
>> With VPLL as source clock to FIMD,
>> Exynos DP Initializaton was failing sometimes with unstable clock.
>> Changing FIMD source to MPLL resolves this issue.
>>
>> Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
>> Acked-by: Simon Glass <sjg@chromium.org>
>> ---
>> arch/arm/cpu/armv7/exynos/clock.c | 2 +-
>> 1 files changed, 1 insertions(+), 1 deletions(-)
>>
>> diff --git a/arch/arm/cpu/armv7/exynos/clock.c b/arch/arm/cpu/armv7/exynos/clock.c
>> index fe61f88..bfcd5f7 100644
>> --- a/arch/arm/cpu/armv7/exynos/clock.c
>> +++ b/arch/arm/cpu/armv7/exynos/clock.c
>> @@ -603,7 +603,7 @@ void exynos5_set_lcd_clk(void)
>> */
>> cfg = readl(&clk->src_disp1_0);
>> cfg &= ~(0xf);
>> - cfg |= 0x8;
>> + cfg |= 0x6;
> Please check it.
In order to use the configured refresh rate as closely as possible, it
is more proper value(MPLL: 0x6) than
using VPLL as source clock.
Thank you,
Donghwa Lee
next prev parent reply other threads:[~2012-12-17 1:12 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-13 11:29 [U-Boot] [PATCH V2 0/4] Add support for FIMD and DP on SMDK5250 Ajay Kumar
2012-12-13 11:29 ` [U-Boot] [PATCH V2 1/4] EXYNOS5: Change parent clock of FIMD to MPLL Ajay Kumar
2012-12-15 5:13 ` Minkyu Kang
2012-12-17 1:12 ` Donghwa Lee [this message]
2012-12-13 11:29 ` [U-Boot] [PATCH RESEND 2/4] video: Fix compilation dependency of exynos_dp and exynos_mipi on exynos_fb Ajay Kumar
2012-12-15 5:25 ` Minkyu Kang
2012-12-17 0:53 ` Donghwa Lee
2012-12-13 11:29 ` [U-Boot] [PATCH V2 3/4] video: Modify exynos_fimd driver to support LCD console Ajay Kumar
2012-12-14 22:38 ` Simon Glass
2012-12-13 11:29 ` [U-Boot] [PATCH V2 4/4] EXYNOS5: Add support for FIMD and DP Ajay Kumar
2012-12-15 5:22 ` Minkyu Kang
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=50CE7168.9060808@samsung.com \
--to=dh09.lee@samsung.com \
--cc=u-boot@lists.denx.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.