This patch uses the (almost) the same settings as those found in the
original Android firmware. As such, it gurantees good compatibility.

V2: Small fixes/changes to the config

V3: Checkpatch fixes

Signed-off-by: Nikola Pavlica <pavlica.nik...@gmail.com>
---
 arch/arm/dts/Makefile                    |   1 +
 arch/arm/dts/sun7i-a20-vivax-tpc9150.dts | 259 +++++++++++++++++++++++
 board/sunxi/MAINTAINERS                  |   5 +
 configs/Vivax_TPC9150_defconfig          |  13 ++
 4 files changed, 278 insertions(+)
 create mode 100644 arch/arm/dts/sun7i-a20-vivax-tpc9150.dts
 create mode 100644 configs/Vivax_TPC9150_defconfig

diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index fc16a57e60..d8e2248272 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -568,6 +568,7 @@ dtb-$(CONFIG_MACH_SUN7I) += \
        sun7i-a20-pcduino3.dtb \
        sun7i-a20-pcduino3-nano.dtb \
        sun7i-a20-primo73.dtb \
+       sun7i-a20-vivax-tpc9150.dtb \
        sun7i-a20-wexler-tab7200.dtb \
        sun7i-a20-wits-pro-a20-dkt.dtb \
        sun7i-a20-yones-toptech-bd1078.dtb
diff --git a/arch/arm/dts/sun7i-a20-vivax-tpc9150.dts 
b/arch/arm/dts/sun7i-a20-vivax-tpc9150.dts
new file mode 100644
index 0000000000..78867c2fe0
--- /dev/null
+++ b/arch/arm/dts/sun7i-a20-vivax-tpc9150.dts
@@ -0,0 +1,259 @@
+// SPDX-License-Identifier: GPL-2.0+ OR X11
+/*
+ * Copyright 2021 Nikola Pavlica <pavlica.nik...@gmail.com>
+ *
+ * DTS file for the Vivax TPC-9150 tablet
+ */
+
+/dts-v1/;
+#include "sun7i-a20.dtsi"
+#include "sunxi-common-regulators.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/pwm/pwm.h>
+
+/ {
+       model = "Vivax TPC-9150 tablet";
+       compatible = "vivax,tpc-9150", "allwinner,sun7i-a20";
+
+       aliases {
+               serial0 = &uart0;
+       };
+
+       backlight: backlight {
+               compatible = "pwm-backlight";
+               pwms = <&pwm 0 50000 PWM_POLARITY_INVERTED>;
+               brightness-levels = <0  1  2  4  6  8 11 14 18
+                                                       23 30 38 48 61 78 100>;
+               default-brightness-level = <16>;
+               enable-gpios = <&pio 7 7 GPIO_ACTIVE_HIGH>; /* PH7 */
+               power-supply = <&reg_vcc3v3>;
+       };
+
+       chosen {
+               stdout-path = "serial0:115200n8";
+       };
+
+       hdmi-connector {
+               compatible = "hdmi-connector";
+               type = "a";
+
+               port {
+                       hdmi_con_in: endpoint {
+                               remote-endpoint = <&hdmi_out_con>;
+                       };
+               };
+       };
+};
+
+&i2c0 {
+       status = "okay";
+
+       axp209: pmic@34 {
+               reg = <0x34>;
+               interrupt-parent = <&nmi_intc>;
+               interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
+       };
+};
+
+&i2c1 {
+       status = "okay";
+
+       // you need to manually probe this sensor, the kernel fails to do it on 
its own
+       stk8312@3d {
+               compatible = "STK8312", "stk8312";
+               reg = <0x3d>;
+               interrupt-parent = <&pio>;
+               interrupts = <7 0 IRQ_TYPE_EDGE_RISING>; /* PH0 / EINT0 */
+       };
+};
+
+&i2c2 {
+       status = "okay";
+
+       ft5x: touchscreen@38 {
+               compatible = "edt,edt-ft5406";
+               reg = <0x38>;
+               interrupt-parent = <&pio>;
+               interrupts = <7 21 IRQ_TYPE_EDGE_FALLING>; /* PH21 */
+
+               touchscreen-size-x = <800>;
+               touchscreen-size-y = <480>;
+
+               bias-pull-up;
+       };
+};
+
+&i2c3 {
+       status = "okay";
+};
+
+&mmc0 {
+       vmmc-supply = <&reg_vcc3v3>;
+       bus-width = <4>;
+       cd-gpios = <&pio 7 1 GPIO_ACTIVE_LOW>; /* PH1 */
+       status = "okay";
+};
+
+&ehci0 {
+       status = "okay";
+};
+
+&ehci1 {
+       status = "okay";
+};
+
+&ohci0 {
+       status = "okay";
+};
+
+&ohci1 {
+       status = "okay";
+};
+
+&otg_sram {
+       status = "okay";
+};
+
+&reg_usb0_vbus {
+       status = "okay";
+};
+
+&reg_usb1_vbus {
+       status = "okay";
+       gpio = <&pio 7 6 GPIO_ACTIVE_HIGH>; /* PH6 */
+};
+
+&reg_usb2_vbus {
+       status = "okay";
+       gpio = <&pio 7 3 GPIO_ACTIVE_HIGH>; /* PH3 */
+};
+
+&usb_otg {
+       dr_mode = "otg";
+       status = "okay";
+};
+
+&usbphy {
+       usb0_id_det-gpios = <&pio 7 4 (GPIO_ACTIVE_HIGH | GPIO_PULL_UP)>; /* 
PH4 */
+       usb0_vbus_power-supply = <&usb_power_supply>;
+       usb0_vbus-supply = <&reg_usb0_vbus>;
+       usb1_vbus-supply = <&reg_usb1_vbus>;
+       usb2_vbus-supply = <&reg_usb2_vbus>;
+       status = "okay";
+};
+
+&uart0 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&uart0_pb_pins>;
+       status = "okay";
+};
+
+// display related
+&be0 {
+       status = "okay";
+};
+
+&hdmi {
+       status = "okay";
+};
+
+&hdmi_out {
+       hdmi_out_con: endpoint {
+               remote-endpoint = <&hdmi_con_in>;
+       };
+};
+
+// PWM used for the backlight
+&pwm {
+       pinctrl-names = "default";
+       pinctrl-0 = <&pwm0_pin>;
+       status = "okay";
+};
+
+&codec {
+       allwinner,pa-gpios = <&pio 7 15 GPIO_ACTIVE_LOW>; /* PH15 */
+       status = "okay";
+};
+
+#include "axp209.dtsi"
+
+&usb_power_supply {
+       status = "okay";
+};
+
+&battery_power_supply {
+       status = "okay";
+};
+
+&reg_dcdc2 {
+       regulator-always-on;
+       regulator-min-microvolt = <1000000>;
+       regulator-max-microvolt = <1500000>;
+       regulator-name = "vdd-cpu";
+};
+
+&reg_dcdc3 {
+       regulator-always-on;
+       regulator-min-microvolt = <1000000>;
+       regulator-max-microvolt = <1400000>;
+       regulator-name = "vdd-int-pll";
+};
+
+&reg_ldo1 {
+       regulator-name = "vdd-rtc";
+};
+
+&reg_ldo2 {
+       regulator-always-on;
+       regulator-min-microvolt = <3000000>;
+       regulator-max-microvolt = <3000000>;
+       regulator-name = "avcc";
+};
+
+&reg_ldo3 {
+       regulator-min-microvolt = <3300000>;
+       regulator-max-microvolt = <3300000>;
+       regulator-name = "vcc-wifi";
+};
+
+&lradc {
+       vref-supply = <&reg_vcc3v0>;
+       status = "enabled";
+};
+
+// voltage table obtained from FEX file1
+&cpu0 {
+       cpu-supply = <&reg_dcdc2>;
+       operating-points = <
+               /* kHz    uV */
+               1008000 1450000
+               960000  1400000
+               864000  1300000
+               792000  1250000
+               720000  1200000
+               624000  1150000
+               528000  1100000
+               312000  1050000
+               144000  1050000
+               >;
+};
+
+&cpu1 {
+       cpu-supply = <&reg_dcdc2>;
+       operating-points = <
+               /* kHz    uV */
+               1008000 1450000
+               960000  1400000
+               864000  1300000
+               792000  1250000
+               720000  1200000
+               624000  1150000
+               528000  1100000
+               312000  1050000
+               144000  1050000
+               >;
+};
+
diff --git a/board/sunxi/MAINTAINERS b/board/sunxi/MAINTAINERS
index 4fc26077b2..b13c09f582 100644
--- a/board/sunxi/MAINTAINERS
+++ b/board/sunxi/MAINTAINERS
@@ -515,6 +515,11 @@ M: Maxime Ripard <mrip...@kernel.org>
 S:     Maintained
 F:     configs/tbs_a711_defconfig
 
+VIVAX TPC-9150 BOARD
+M:     Nikola Pavlica <pavlica.nik...@gmail.com
+S:     Maintained
+F:     configs/Vivax_TPC-9150-defconfig
+
 WEXLER-TAB7200 BOARD
 M:     Aleksei Mamlin <mamli...@gmail.com>
 S:     Maintained
diff --git a/configs/Vivax_TPC9150_defconfig b/configs/Vivax_TPC9150_defconfig
new file mode 100644
index 0000000000..77cbba6aba
--- /dev/null
+++ b/configs/Vivax_TPC9150_defconfig
@@ -0,0 +1,13 @@
+CONFIG_ARM=y
+CONFIG_ARCH_SUNXI=y
+CONFIG_DEFAULT_DEVICE_TREE="sun7i-a20-vivax-tpc9150"
+CONFIG_SPL=y
+CONFIG_MACH_SUN7I=y
+CONFIG_DRAM_CLK=384
+CONFIG_VIDEO_LCD_MODE="x:1024,y:600,depth:18,pclk_khz:60000,le:60,ri:160,up:13,lo:12,hs:100,vs:10,sync:3,vmode:0"
+CONFIG_VIDEO_LCD_DCLK_PHASE=0
+CONFIG_VIDEO_LCD_POWER="PH8"
+CONFIG_VIDEO_LCD_BL_EN="PH7"
+CONFIG_VIDEO_LCD_BL_PWM="PB2"
+# CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
+CONFIG_SPL_I2C=y
-- 
2.33.0

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