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Subject[RFC PATCH v2 16/17] ARM: dts: tegra30: cardhu: Setup voltage regulators for DVFS
Date
Set min/max regulators voltage and add CPU node that hooks up CPU with
voltage regulators.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
arch/arm/boot/dts/tegra30-cardhu.dtsi | 19 ++++++++++++++++---
1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/arch/arm/boot/dts/tegra30-cardhu.dtsi b/arch/arm/boot/dts/tegra30-cardhu.dtsi
index fb9222b479d2..5fcf5ac09530 100644
--- a/arch/arm/boot/dts/tegra30-cardhu.dtsi
+++ b/arch/arm/boot/dts/tegra30-cardhu.dtsi
@@ -272,8 +272,11 @@

vddctrl_reg: vddctrl {
regulator-name = "vdd_cpu,vdd_sys";
- regulator-min-microvolt = <1000000>;
- regulator-max-microvolt = <1000000>;
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <1250000>;
+ regulator-coupled-with = <&core_vdd_reg>;
+ regulator-coupled-max-spread = <300000>;
+ regulator-max-step-microvolt = <100000>;
regulator-always-on;
};

@@ -342,13 +345,16 @@
interrupts = <TEGRA_GPIO(CC, 2) IRQ_TYPE_LEVEL_LOW>;
};

- tps62361@60 {
+ core_vdd_reg: tps62361@60 {
compatible = "ti,tps62361";
reg = <0x60>;

regulator-name = "tps62361-vout";
regulator-min-microvolt = <500000>;
regulator-max-microvolt = <1500000>;
+ regulator-coupled-with = <&vddctrl_reg>;
+ regulator-coupled-max-spread = <300000>;
+ regulator-max-step-microvolt = <100000>;
regulator-boot-on;
regulator-always-on;
ti,vsel0-state-high;
@@ -649,4 +655,11 @@
debounce-interval = <10>;
};
};
+
+ cpus {
+ cpu0: cpu@0 {
+ cpu-supply = <&vddctrl_reg>;
+ core-supply = <&core_vdd_reg>;
+ };
+ };
};
--
2.19.0
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