ARM: dts: meson8b: odroidc1: add the fixed voltage regulators

There are multiple fixed regulators on the Odroid-C1 board. Add them so
they can be used when we add the devices that need them (SAR ADC needs
the 1.8V IOREF, RTC needs VDD_RTC).
These are:
- P5V0 is the main 5V power input
- VCC3V3 / VDDIO_AO3V3 / VDD3V3: fixed regulator with 3.3V output which
  is supplied by P5V0
- IOREF_1V8 / VCC1V8 / VDD1V8: fixed regulator with 1.8V output which is
  supplied by P5V0
- VDD_RTC: fixed voltage regulator with 0.9V output which is supplied by
  VDDIO_AO3V3
- DDR_VDDC / DDR3_1V5: fixed voltage regulator with 1.5V output which is
  supplied by P5V0
- the existing TF_IO and RFLASH_VDD_EN regulators are supplied by
  VDDIO_AO3V3
- the existing VCCK regulator is supplied by P5V0

This does not add the missing VDDEE regulator (controlled by PWM_D)
because it's not clear yet how to configure the voltage of that
regulator.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

diff --git a/arch/arm/boot/dts/meson8b-odroidc1.dts b/arch/arm/boot/dts/meson8b-odroidc1.dts
index 0557823cdd64a33dd1c4c1e36bc9690b78ffa0f3..a08dccccdb5e11ec407b92ba9a755754f3bca0ca 100644 (file)
--- a/arch/arm/boot/dts/meson8b-odroidc1.dts
+++ b/arch/arm/boot/dts/meson8b-odroidc1.dts
@@ -71,6 +71,14 @@
                };
        };
 
+       p5v0: regulator-p5v0 {
+               compatible = "regulator-fixed";
+
+               regulator-name = "P5V0";
+               regulator-min-microvolt = <5000000>;
+               regulator-max-microvolt = <5000000>;
+       };
+
        tflash_vdd: regulator-tflash_vdd {
                /*
                 * signal name from schematics: TFLASH_VDD_EN
@@ -81,6 +89,8 @@
                regulator-min-microvolt = <3300000>;
                regulator-max-microvolt = <3300000>;
 
+               vin-supply = <&vcc_3v3>;
+
                gpio = <&gpio GPIOY_12 GPIO_ACTIVE_HIGH>;
                enable-active-high;
        };
@@ -92,6 +102,8 @@
                regulator-min-microvolt = <1800000>;
                regulator-max-microvolt = <3300000>;
 
+               vin-supply = <&vcc_3v3>;
+
                /*
                 * signal name from schematics: TF_3V3N_1V8_EN
                 */
@@ -102,6 +114,36 @@
                          1800000 1>;
        };
 
+       vcc_1v8: regulator-vcc-1v8 {
+               /*
+                * RICHTEK RT9179 configured for a fixed output voltage of
+                * 1.8V. This supplies not only VCC1V8 but also IOREF_1V8 and
+                * VDD1V8 according to the schematics.
+                */
+               compatible = "regulator-fixed";
+
+               regulator-name = "VCC1V8";
+               regulator-min-microvolt = <1800000>;
+               regulator-max-microvolt = <1800000>;
+
+               vin-supply = <&p5v0>;
+       };
+
+       vcc_3v3: regulator-vcc-3v3 {
+               /*
+                * Monolithic Power Systems MP2161 configured for a fixed
+                * output voltage of 3.3V. This supplies not only VCC3V3 but
+                * also VDD3V3 and VDDIO_AO3V3 according to the schematics.
+                */
+               compatible = "regulator-fixed";
+
+               regulator-name = "VCC3V3";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+
+               vin-supply = <&p5v0>;
+       };
+
        vcck: regulator-vcck {
                /* Monolithic Power Systems MP2161 */
                compatible = "pwm-regulator";
@@ -110,12 +152,43 @@
                regulator-min-microvolt = <860000>;
                regulator-max-microvolt = <1140000>;
 
+               vin-supply = <&p5v0>;
+
                pwms = <&pwm_cd 0 12218 0>;
                pwm-dutycycle-range = <91 0>;
 
                regulator-boot-on;
                regulator-always-on;
        };
+
+       vddc_ddr: regulator-vddc-ddr {
+               /*
+                * Monolithic Power Systems MP2161 configured for a fixed
+                * output voltage of 1.5V. This supplies not only DDR_VDDC but
+                * also DDR3_1V5 according to the schematics.
+                */
+               compatible = "regulator-fixed";
+
+               regulator-name = "DDR_VDDC";
+               regulator-min-microvolt = <1500000>;
+               regulator-max-microvolt = <1500000>;
+
+               vin-supply = <&p5v0>;
+       };
+
+       vdd_rtc: regulator-vdd-rtc {
+               /*
+                * Torex Semiconductor XC6215 configured for a fixed output of
+                * 0.9V.
+                */
+               compatible = "regulator-fixed";
+
+               regulator-name = "VDD_RTC";
+               regulator-min-microvolt = <900000>;
+               regulator-max-microvolt = <900000>;
+
+               vin-supply = <&vcc_3v3>;
+       };
 };
 
 &cpu0 {