ARM: shmobile: ape6evm: add CPUFreq support
This patch adds OPPs to the CA15 DT node and a max8973 DT node to support
clock and voltage scaling, using the cpufreq-cpu0 CPUFreq driver.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
diff --git a/arch/arm/boot/dts/r8a73a4-ape6evm.dts b/arch/arm/boot/dts/r8a73a4-ape6evm.dts
index f603c69..e657a9db 100644
--- a/arch/arm/boot/dts/r8a73a4-ape6evm.dts
+++ b/arch/arm/boot/dts/r8a73a4-ape6evm.dts
@@ -50,3 +50,25 @@
};
};
};
+
+&i2c5 {
+ vdd_dvfs: max8973@1b {
+ compatible = "maxim,max8973";
+ reg = <0x1b>;
+
+ regulator-min-microvolt = <935000>;
+ regulator-max-microvolt = <1200000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+};
+
+&cpu0 {
+ cpu0-supply = <&vdd_dvfs>;
+ operating-points = <
+ /* kHz uV */
+ 1950000 1115000
+ 1462500 995000
+ >;
+ voltage-tolerance = <1>; /* 1% */
+};