From: Sascha Hauer <s.hauer@pengutronix.de>
To: Philipp Zabel <p.zabel@pengutronix.de>
Cc: barebox@lists.infradead.org
Subject: Re: [PATCH] ARM i.MX6: Gate clocks to graphics processing units
Date: Mon, 24 Feb 2014 09:31:36 +0100 [thread overview]
Message-ID: <20140224083136.GS17250@pengutronix.de> (raw)
In-Reply-To: <1393004277-9417-1-git-send-email-p.zabel@pengutronix.de>
On Fri, Feb 21, 2014 at 06:37:57PM +0100, Philipp Zabel wrote:
> This patch gates the clocks to GPU, IPU, and VPU units by default,
> significantly reducing the VDDSOC power draw while barebox is running.
>
> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Ok. I hope we remember to revert this change when we add the 3d driver
to barebox ;)
Sascha
> ---
> arch/arm/mach-imx/clk-imx6.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/arch/arm/mach-imx/clk-imx6.c b/arch/arm/mach-imx/clk-imx6.c
> index c32b6cc..ac86074 100644
> --- a/arch/arm/mach-imx/clk-imx6.c
> +++ b/arch/arm/mach-imx/clk-imx6.c
> @@ -307,12 +307,12 @@ static int imx6_ccm_probe(struct device_d *dev)
> clkdev_add_physbase(clks[enfc_podf], MX6_GPMI_BASE_ADDR, NULL);
>
> writel(0xffffffff, ccm_base + CCGR0);
> - writel(0xffffffff, ccm_base + CCGR1);
> + writel(0xf0ffffff, ccm_base + CCGR1); /* gate GPU3D, GPU2D */
> writel(0xffffffff, ccm_base + CCGR2);
> - writel(0xffffffff, ccm_base + CCGR3);
> + writel(0x3fff0000, ccm_base + CCGR3); /* gate OpenVG, LDB, IPU1, IPU2 */
> writel(0xffffffff, ccm_base + CCGR4);
> writel(0xffffffff, ccm_base + CCGR5);
> - writel(0xffffffff, ccm_base + CCGR6);
> + writel(0xffff3fff, ccm_base + CCGR6); /* gate VPU */
> writel(0xffffffff, ccm_base + CCGR7);
>
> clk_enable(clks[pll6_enet]);
> --
> 1.9.0.rc3
>
>
> _______________________________________________
> barebox mailing list
> barebox@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/barebox
>
--
Pengutronix e.K. | |
Industrial Linux Solutions | http://www.pengutronix.de/ |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox
prev parent reply other threads:[~2014-02-24 8:31 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-21 17:37 Philipp Zabel
2014-02-24 8:31 ` Sascha Hauer [this message]
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=20140224083136.GS17250@pengutronix.de \
--to=s.hauer@pengutronix.de \
--cc=barebox@lists.infradead.org \
--cc=p.zabel@pengutronix.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox