@@ -76,6 +76,22 @@
regulator-max-microvolt = <3300000>;
};
+ reg_vdd_cpux: vdd-cpux {
+ compatible = "regulator-gpio";
+ regulator-name = "vdd-cpux";
+ regulator-type = "voltage";
+ regulator-boot-on;
+ regulator-always-on;
+ regulator-min-microvolt = <1108475>;
+ regulator-max-microvolt = <1307810>;
+ regulator-ramp-delay = <50>; /* 4ms */
+ enable-gpios = <&r_pio 0 8 GPIO_ACTIVE_HIGH>; /* PL8 */
+ gpios = <&r_pio 0 1 GPIO_ACTIVE_HIGH>; /* PL6 */
+ gpios-states = <0x1>;
+ states = <1108475 0x0
+ 1307810 0x1>;
+ };
+
wifi_pwrseq: wifi_pwrseq {
compatible = "mmc-pwrseq-simple";
pinctrl-names = "default";
@@ -84,6 +100,10 @@
};
};
+&cpu0 {
+ cpu-supply = <®_vdd_cpux>;
+};
+
&de {
status = "okay";
};
The OrangePi Zero Plus 2 uses a fixed regulator to supply the CPU cores. The feedback resistor network can be changed by toggling a GPIO line. This is effectively a GPIO controlled regulator that can change between roughly 1.1V and 1.3V. The actual voltage is slightly higher. The values used in the device tree description are based on calculations using the resistor values from the schematics. Cc: Jagan Teki <jagan@amarulasolutions.com> Cc: Sergey Matyukevich <geomatsi@gmail.com> Signed-off-by: Chen-Yu Tsai <wens@csie.org> --- This patch is based on the schematics and has not been tested on an actual board. --- .../sun50i-h5-orangepi-zero-plus2.dts | 20 +++++++++++++++++++ 1 file changed, 20 insertions(+)