All of lore.kernel.org
 help / color / mirror / Atom feed
From: Daniel Drake <drake@endlessm.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] ODROID dynamic memory initialization
Date: Tue, 22 Jul 2014 14:08:36 +0100	[thread overview]
Message-ID: <CAD8Lp45g_cysXSH7G8xbZkHqmSRsrcT9QMpQPmB0B2bnM1sAJQ@mail.gmail.com> (raw)

Hi Przemyslaw,

While looking at the old uboot from hardkernel, I'm curious about
CONFIG_CLK_BUS_DMC_220_440, which is set by default. This appears to
run the memory at a high speed, by writing certain registers in the
Dynamic Memory Controller (e.g. TIMINGROW), and clocking MPLL to
880MHz.

Your uboot patches don't seem to touch DMC regs like TIMINGROW, and
also clock the MPLL at 800MHz.

I'm wondering if there is any reason for this? Wouldn't it be better
to run at the faster speed like the vendor code does?

Thanks
Daniel

             reply	other threads:[~2014-07-22 13:08 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-07-22 13:08 Daniel Drake [this message]
2014-07-23 12:27 ` [U-Boot] ODROID dynamic memory initialization Daniel Drake
2014-07-23 15:04   ` Przemyslaw Marczak
2014-07-24 10:42     ` [U-Boot] [PATCH] odroid: set MPLL clock to 880MHz Przemyslaw Marczak
2014-07-24 10:58       ` Przemyslaw Marczak
2014-09-05  6:55       ` Minkyu Kang
2014-09-05 10:50         ` Przemyslaw Marczak
2014-09-11  5:03           ` Minkyu Kang
2014-09-11  5:09             ` Jaehoon Chung
2014-09-11  7:25               ` Lukasz Majewski

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=CAD8Lp45g_cysXSH7G8xbZkHqmSRsrcT9QMpQPmB0B2bnM1sAJQ@mail.gmail.com \
    --to=drake@endlessm.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.