A23/A33 Q8 tablets have an X-Powers AXP223 PMIC connected via RSB. It's
regulators provide power to various parts of the SoC and the board.

Also add lcd regulator supply for simplefb and update the existing
vmmc-supply for mmc0.

Signed-off-by: Chen-Yu Tsai <w...@csie.org>
---
 arch/arm/boot/dts/sun8i-q8-common.dtsi | 86 +++++++++++++++++++++++++++++++++-
 1 file changed, 84 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/sun8i-q8-common.dtsi 
b/arch/arm/boot/dts/sun8i-q8-common.dtsi
index 1a69231d2da5..01ab47b32d8d 100644
--- a/arch/arm/boot/dts/sun8i-q8-common.dtsi
+++ b/arch/arm/boot/dts/sun8i-q8-common.dtsi
@@ -56,7 +56,6 @@
                brightness-levels = <0 10 20 30 40 50 60 70 80 90 100>;
                default-brightness-level = <8>;
                enable-gpios = <&pio 7 6 GPIO_ACTIVE_HIGH>; /* PH6 */
-               /* backlight is powered by AXP223 DC1SW */
        };
 
        chosen {
@@ -67,7 +66,7 @@
 &mmc0 {
        pinctrl-names = "default";
        pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin_q8>;
-       vmmc-supply = <&reg_vcc3v0>;
+       vmmc-supply = <&reg_dcdc1>;
        bus-width = <4>;
        cd-gpios = <&pio 1 4 GPIO_ACTIVE_HIGH>; /* PB4 */
        cd-inverted;
@@ -92,6 +91,85 @@
 
 &r_rsb {
        status = "okay";
+
+       axp22x: pmic@3e3 {
+               compatible = "x-powers,axp223";
+               reg = <0x3e3>;
+               interrupt-parent = <&nmi_intc>;
+               interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
+               eldoin-supply = <&reg_dcdc1>;
+       };
+};
+
+#include "axp22x.dtsi"
+
+&reg_aldo1 {
+       regulator-always-on;
+       regulator-min-microvolt = <3000000>;
+       regulator-max-microvolt = <3000000>;
+       regulator-name = "vcc-io";
+};
+
+&reg_aldo2 {
+       regulator-always-on;
+       regulator-min-microvolt = <2350000>;
+       regulator-max-microvolt = <2650000>;
+       regulator-name = "vdd-dll";
+};
+
+&reg_aldo3 {
+       regulator-always-on;
+       regulator-min-microvolt = <2700000>;
+       regulator-max-microvolt = <3300000>;
+       regulator-name = "vcc-pll-avcc";
+};
+
+&reg_dc1sw {
+       regulator-min-microvolt = <3000000>;
+       regulator-max-microvolt = <3000000>;
+       regulator-name = "vcc-lcd";
+};
+
+&reg_dc5ldo {
+       regulator-always-on;
+       regulator-min-microvolt = <900000>;
+       regulator-max-microvolt = <1400000>;
+       regulator-name = "vdd-cpus";
+};
+
+&reg_dcdc1 {
+       regulator-always-on;
+       regulator-min-microvolt = <3000000>;
+       regulator-max-microvolt = <3000000>;
+       regulator-name = "vcc-3v0";
+};
+
+&reg_dcdc2 {
+       regulator-always-on;
+       regulator-min-microvolt = <900000>;
+       regulator-max-microvolt = <1400000>;
+       regulator-name = "vdd-sys";
+};
+
+&reg_dcdc3 {
+       regulator-always-on;
+       regulator-min-microvolt = <900000>;
+       regulator-max-microvolt = <1400000>;
+       regulator-name = "vdd-cpu";
+};
+
+&reg_dcdc5 {
+       regulator-always-on;
+       regulator-min-microvolt = <1500000>;
+       regulator-max-microvolt = <1500000>;
+       regulator-name = "vcc-dram";
+};
+
+&reg_rtc_ldo {
+       regulator-always-on;
+       regulator-min-microvolt = <3000000>;
+       regulator-max-microvolt = <3000000>;
+       regulator-name = "vcc-rtc";
 };
 
 &r_uart {
@@ -99,3 +177,7 @@
        pinctrl-0 = <&r_uart_pins_a>;
        status = "okay";
 };
+
+&simplefb_lcd {
+       vcc-lcd-supply = <&reg_dc1sw>;
+};
-- 
2.6.2

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