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
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