From: wens@csie.org (Chen-Yu Tsai)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/2] ARM: dts: sunxi: Remove overclocked/overvoltaged OPP
Date: Thu, 19 Mar 2015 10:39:33 +0800 [thread overview]
Message-ID: <1426732773-7179-3-git-send-email-wens@csie.org> (raw)
In-Reply-To: <1426732773-7179-1-git-send-email-wens@csie.org>
Without proper regulator support for individual boards, it is dangerous
to have overclocked/overvoltaged OPPs in the list. Cpufreq will increase
the frequency without the accompanying voltage increase, resulting in
an unstable system.
Remove them for now. We can revisit them with the new version of OPP
bindings, which support boost settings and frequency ranges, among
other things.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
---
arch/arm/boot/dts/sun5i-a13.dtsi | 3 +--
arch/arm/boot/dts/sun7i-a20.dtsi | 3 +--
2 files changed, 2 insertions(+), 4 deletions(-)
diff --git a/arch/arm/boot/dts/sun5i-a13.dtsi b/arch/arm/boot/dts/sun5i-a13.dtsi
index 5d9ce84486bb..39264f7c7ae6 100644
--- a/arch/arm/boot/dts/sun5i-a13.dtsi
+++ b/arch/arm/boot/dts/sun5i-a13.dtsi
@@ -140,7 +140,6 @@
clock-latency = <244144>; /* 8 32k periods */
operating-points = <
/* kHz uV */
- 1104000 1500000
1008000 1400000
912000 1350000
864000 1300000
@@ -150,7 +149,7 @@
>;
#cooling-cells = <2>;
cooling-min-level = <0>;
- cooling-max-level = <6>;
+ cooling-max-level = <5>;
};
&ehci0 {
diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi
index 3a8530b79f1c..fdd181792b4b 100644
--- a/arch/arm/boot/dts/sun7i-a20.dtsi
+++ b/arch/arm/boot/dts/sun7i-a20.dtsi
@@ -105,7 +105,6 @@
clock-latency = <244144>; /* 8 32k periods */
operating-points = <
/* kHz uV */
- 1008000 1450000
960000 1400000
912000 1400000
864000 1300000
@@ -116,7 +115,7 @@
>;
#cooling-cells = <2>;
cooling-min-level = <0>;
- cooling-max-level = <7>;
+ cooling-max-level = <6>;
};
cpu at 1 {
--
2.1.4
next prev parent reply other threads:[~2015-03-19 2:39 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-19 2:39 [PATCH 0/2] ARM: dts: sunxi: Fix cpufreq instabilities Chen-Yu Tsai
2015-03-19 2:39 ` [PATCH 1/2] ARM: dts: sun4i: a10-lime: Override and remove 1008MHz OPP setting Chen-Yu Tsai
2015-03-19 6:57 ` Siarhei Siamashka
2015-03-19 8:17 ` Chen-Yu Tsai
2015-03-19 10:28 ` Siarhei Siamashka
2015-03-26 16:58 ` [linux-sunxi] " Iain Paton
2015-03-26 17:56 ` Chen-Yu Tsai
2015-03-19 2:39 ` Chen-Yu Tsai [this message]
2015-03-19 6:59 ` [PATCH 2/2] ARM: dts: sunxi: Remove overclocked/overvoltaged OPP Siarhei Siamashka
2015-03-19 7:11 ` Chen-Yu Tsai
2015-03-19 8:14 ` Chen-Yu Tsai
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=1426732773-7179-3-git-send-email-wens@csie.org \
--to=wens@csie.org \
--cc=linux-arm-kernel@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 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.