ARM: dts: imx53-qsb: disable 1.2GHz OPP

BugLink: https://bugs.launchpad.net/bugs/1836654
[ Upstream commit eea96566c189c77e5272585984eb2729881a2f1d ]

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>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>

diff --git a/arch/arm/boot/dts/imx53-qsb-common.dtsi b/arch/arm/boot/dts/imx53-qsb-common.dtsi
index 41a2e2a2b07926235e321a206b7f0514546a8d2b..e866e8d5837215b2cc9fa3a0e38080a1a3987e28 100644 (file)
--- a/arch/arm/boot/dts/imx53-qsb-common.dtsi
+++ b/arch/arm/boot/dts/imx53-qsb-common.dtsi
@@ -130,6 +130,17 @@
        };
 };
 
+&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>;