The SK-IMX53 board bearing i.MX536 CPU is not stable when running at 1.2
GHz. Disable that frequency.
Note, officially i.MX536 is rated up to 800 MHz, but running it at 1 GHz
proved to be stable.
Fixes: 0b8576d8440a ("ARM: dts: imx: Add support for SK-iMX53 board")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
---
arch/arm/boot/dts/nxp/imx/imx53-sk-imx53.dts | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/arch/arm/boot/dts/nxp/imx/imx53-sk-imx53.dts b/arch/arm/boot/dts/nxp/imx/imx53-sk-imx53.dts
index 6ea103a49697..ccb993ddc445 100644
--- a/arch/arm/boot/dts/nxp/imx/imx53-sk-imx53.dts
+++ b/arch/arm/boot/dts/nxp/imx/imx53-sk-imx53.dts
@@ -77,6 +77,17 @@ &can1 {
status = "okay";
};
+&cpu0 {
+ /* CPU rated to 800 MHz, not the default 1.2GHz. Keep 1.0 GHz as it seem stable too. */
+ operating-points = <
+ /* kHz uV */
+ 166666 850000
+ 400000 900000
+ 800000 1050000
+ 1000000 1200000
+ >;
+};
+
&ecspi1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_ecspi1>;
--
2.39.2
