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From: Sascha Hauer <s.hauer@pengutronix.de>
To: Shawn Guo <shawnguo@kernel.org>
Cc: devicetree@vger.kernel.org, Sascha Hauer <s.hauer@pengutronix.de>,
	NXP Linux Team <linux-imx@nxp.com>,
	kernel@pengutronix.de, Fabio Estevam <fabio.estevam@nxp.com>,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2] ARM: dts: imx53-qsb: disable 1.2GHz OPP
Date: Wed, 12 Sep 2018 08:23:01 +0200	[thread overview]
Message-ID: <20180912062301.3972-1-s.hauer@pengutronix.de> (raw)
In-Reply-To: <20180910125056.30813-1-s.hauer@pengutronix.de>

The maximum CPU frequency for the i.MX53 QSB is 1GHz, so disable the
1.2GHz OPP. This makes the board work again with configs that have
cpufreq enabled like imx_v6_v7_defconfig on which the board stopped
working with the addition of cpufreq-dt support.

Fixes: 791f416608 ("ARM: dts: imx53: add cpufreq-dt support")

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---

Changes since v1:
- rephrase commit message

arch/arm/boot/dts/imx53-qsb-common.dtsi | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/arm/boot/dts/imx53-qsb-common.dtsi b/arch/arm/boot/dts/imx53-qsb-common.dtsi
index 7423d462d1e4..50dde84b72ed 100644
--- a/arch/arm/boot/dts/imx53-qsb-common.dtsi
+++ b/arch/arm/boot/dts/imx53-qsb-common.dtsi
@@ -123,6 +123,17 @@
 	};
 };
 
+&cpu0 {
+	/* CPU rated to 1GHz, not 1.2GHz as per the default settings */
+	operating-points = <
+		/* kHz   uV */
+		166666  850000
+		400000  900000
+		800000  1050000
+		1000000 1200000
+	>;
+};
+
 &esdhc1 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_esdhc1>;
-- 
2.18.0

WARNING: multiple messages have this Message-ID (diff)
From: s.hauer@pengutronix.de (Sascha Hauer)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2] ARM: dts: imx53-qsb: disable 1.2GHz OPP
Date: Wed, 12 Sep 2018 08:23:01 +0200	[thread overview]
Message-ID: <20180912062301.3972-1-s.hauer@pengutronix.de> (raw)
In-Reply-To: <20180910125056.30813-1-s.hauer@pengutronix.de>

The maximum CPU frequency for the i.MX53 QSB is 1GHz, so disable the
1.2GHz OPP. This makes the board work again with configs that have
cpufreq enabled like imx_v6_v7_defconfig on which the board stopped
working with the addition of cpufreq-dt support.

Fixes: 791f416608 ("ARM: dts: imx53: add cpufreq-dt support")

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---

Changes since v1:
- rephrase commit message

arch/arm/boot/dts/imx53-qsb-common.dtsi | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/arm/boot/dts/imx53-qsb-common.dtsi b/arch/arm/boot/dts/imx53-qsb-common.dtsi
index 7423d462d1e4..50dde84b72ed 100644
--- a/arch/arm/boot/dts/imx53-qsb-common.dtsi
+++ b/arch/arm/boot/dts/imx53-qsb-common.dtsi
@@ -123,6 +123,17 @@
 	};
 };
 
+&cpu0 {
+	/* CPU rated to 1GHz, not 1.2GHz as per the default settings */
+	operating-points = <
+		/* kHz   uV */
+		166666  850000
+		400000  900000
+		800000  1050000
+		1000000 1200000
+	>;
+};
+
 &esdhc1 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_esdhc1>;
-- 
2.18.0

  parent reply	other threads:[~2018-09-12  6:23 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-10 12:50 [PATCH] ARM: dts: imx53-qsb: disable 1.2GHz OPP Sascha Hauer
2018-09-10 12:50 ` Sascha Hauer
2018-09-12  1:22 ` Shawn Guo
2018-09-12  1:22   ` Shawn Guo
2018-09-12  6:23   ` Sascha Hauer
2018-09-12  6:23     ` Sascha Hauer
2018-09-12  6:46     ` Shawn Guo
2018-09-12  6:46       ` Shawn Guo
2018-09-12  6:23 ` Sascha Hauer [this message]
2018-09-12  6:23   ` [PATCH v2] " Sascha Hauer
2018-09-12  6:45   ` Shawn Guo
2018-09-12  6:45     ` Shawn Guo

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