From: Robert Jarzmik <robert.jarzmik@free.fr>
To: barebox@lists.infradead.org
Subject: [PATCH] ARM: mioa701: fix frequence speedup code
Date: Sat, 18 Jan 2014 12:48:04 +0100 [thread overview]
Message-ID: <1390045689-23127-1-git-send-email-robert.jarzmik@free.fr> (raw)
As barebox has become the true SPL of mioa701 board (no intermediate
SPL), a bug was uncovered in the init procedure, where the CPU voltage
was to be increased by commanding the I2C voltage regulator, while the
I2C was shut down.
Fix it by unclock-gating the power I2C bus before using it.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
---
arch/arm/boards/mioa701/board.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm/boards/mioa701/board.c b/arch/arm/boards/mioa701/board.c
index c46b5da..7ee0be0 100644
--- a/arch/arm/boards/mioa701/board.c
+++ b/arch/arm/boards/mioa701/board.c
@@ -266,6 +266,7 @@ static int mioa701_coredevice_init(void)
* This requires to command the Maxim 1586 to upgrade core voltage to
* 1.475 V, on the power I2C bus (device 0x14).
*/
+ CKEN |= CKEN_PWRI2C;
CCCR = CCCR_A | 0x20290;
PCFR = PCFR_GPR_EN | PCFR_FVC | PCFR_DC_EN | PCFR_PI2C_EN | PCFR_OPDE;
PCMD(0) = PCMD_LC | 0x1f;
--
1.7.10.4
_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox
next reply other threads:[~2014-01-18 11:48 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-18 11:48 Robert Jarzmik [this message]
2014-01-18 11:48 ` [PATCH] ARM: pxa: add reset source detection Robert Jarzmik
2014-01-18 11:48 ` [PATCH] ARM: pxa: add poweroff capability Robert Jarzmik
2014-01-18 11:48 ` [PATCH] ARM: mioa701 defconfig update Robert Jarzmik
2014-01-18 11:48 ` [PATCH] ARM: mioa701 change MTD layout Robert Jarzmik
2014-01-18 11:48 ` [PATCH] ARM: mioa701: poweroff the board on long power press Robert Jarzmik
2014-01-20 15:38 ` [PATCH] ARM: mioa701: fix frequence speedup code Sascha Hauer
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=1390045689-23127-1-git-send-email-robert.jarzmik@free.fr \
--to=robert.jarzmik@free.fr \
--cc=barebox@lists.infradead.org \
/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