ARM: dts: tegra20: colibri: Setup voltage regulators for DVFS

Set min/max regulators voltage and add CPU node that hooks up CPU with
voltage regulators.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>

diff --git a/arch/arm/boot/dts/tegra20-colibri.dtsi b/arch/arm/boot/dts/tegra20-colibri.dtsi
index 6162d19..d8b94f5 100644 (file)
--- a/arch/arm/boot/dts/tegra20-colibri.dtsi
+++ b/arch/arm/boot/dts/tegra20-colibri.dtsi
@@ -495,17 +495,19 @@
                                        regulator-always-on;
                                };
 
-                               sm0 {
+                               core_vdd_reg: sm0 {
                                        regulator-name = "VDD_CORE_1.2V";
                                        regulator-min-microvolt = <1200000>;
-                                       regulator-max-microvolt = <1200000>;
+                                       regulator-max-microvolt = <1300000>;
+                                       regulator-coupled-with = <&rtc_vdd_reg>;
+                                       regulator-coupled-max-spread = <150000>;
                                        regulator-always-on;
                                };
 
-                               sm1 {
+                               cpu_vdd_reg: sm1 {
                                        regulator-name = "VDD_CPU_1.0V";
-                                       regulator-min-microvolt = <1000000>;
-                                       regulator-max-microvolt = <1000000>;
+                                       regulator-min-microvolt = <750000>;
+                                       regulator-max-microvolt = <1125000>;
                                        regulator-always-on;
                                };
 
@@ -530,10 +532,13 @@
                                        regulator-always-on;
                                };
 
-                               ldo2 {
+                               rtc_vdd_reg: ldo2 {
                                        regulator-name = "VDD_RTC_1.2V";
                                        regulator-min-microvolt = <1200000>;
-                                       regulator-max-microvolt = <1200000>;
+                                       regulator-max-microvolt = <1300000>;
+                                       regulator-coupled-with = <&core_vdd_reg>;
+                                       regulator-coupled-max-spread = <150000>;
+                                       regulator-always-on;
                                };
 
                                /* LDO3 is not connected to anything */
@@ -740,6 +745,14 @@
                         <&tegra_car TEGRA20_CLK_CDEV1>;
                clock-names = "pll_a", "pll_a_out0", "mclk";
        };
+
+       cpus {
+               cpu0: cpu@0 {
+                       cpu-supply = <&cpu_vdd_reg>;
+                       core-supply = <&core_vdd_reg>;
+                       rtc-supply = <&rtc_vdd_reg>;
+               };
+       };
 };
 
 &gpio {