ARM: dts: pxa: add pxa27x cpu operating points

Add the relevant data taken from the PXA27x Electrical, Mechanical, and
Thermal Specfication. This will be input data for cpufreq-dt driver.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>

arch/arm/boot/dts/pxa27x.dtsi

@@ -137,4 +137,44 @@
 		clocks = <&clks CLK_OSTIMER>;
 		status = "okay";
 	};
+
+	pxa270_opp_table: opp_table0 {
+		compatible = "operating-points-v2";
+
+		opp@104000000 {
+			opp-hz = /bits/ 64 <104000000>;
+			opp-microvolt = <900000 900000 1705000>;
+			clock-latency-ns = <20>;
+		};
+		opp@156000000 {
+			opp-hz = /bits/ 64 <156000000>;
+			opp-microvolt = <1000000 1000000 1705000>;
+			clock-latency-ns = <20>;
+		};
+		opp@208000000 {
+			opp-hz = /bits/ 64 <208000000>;
+			opp-microvolt = <1180000 1180000 1705000>;
+			clock-latency-ns = <20>;
+		};
+		opp@312000000 {
+			opp-hz = /bits/ 64 <312000000>;
+			opp-microvolt = <1250000 1250000 1705000>;
+			clock-latency-ns = <20>;
+		};
+		opp@416000000 {
+			opp-hz = /bits/ 64 <416000000>;
+			opp-microvolt = <1350000 1350000 1705000>;
+			clock-latency-ns = <20>;
+		};
+		opp@520000000 {
+			opp-hz = /bits/ 64 <520000000>;
+			opp-microvolt = <1450000 1450000 1705000>;
+			clock-latency-ns = <20>;
+		};
+		opp@624000000 {
+			opp-hz = /bits/ 64 <624000000>;
+			opp-microvolt = <1550000 1550000 1705000>;
+			clock-latency-ns = <20>;
+		};
+	};
 };