sunxi: Add minimal PocketBook Touch Lux 3 support

arch/arm/dts/Makefile

@@ -497,6 +497,7 @@ dtb-$(CONFIG_MACH_SUN5I) += \
 	sun5i-a13-olinuxino.dtb \
 	sun5i-a13-olinuxino-micro.dtb \
 	sun5i-a13-q8-tablet.dtb \
+	sun5i-a13-pocketbook-touch-lux-3.dtb \
 	sun5i-a13-utoo-p66.dtb \
 	sun5i-gr8-chip-pro.dtb \
 	sun5i-r8-chip.dtb

arch/arm/dts/sun5i-a13-pocketbook-touch-lux-3.dts

@@ -0,0 +1,170 @@
+/*
+ * Copyright 2019 Ondrej Jirman <megous@megous.com>
+ */
+
+/dts-v1/;
+#include "sun5i-a13.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 = "PocketBook Touch Lux 3";
+	compatible = "pocketbook,touch-lux-3", "allwinner,sun5i-a13";
+
+	aliases {
+		serial0 = &uart1;
+	};
+/*
+	backlight: backlight {
+		compatible = "pwm-backlight";
+		pwms = <&pwm 0 50000 PWM_POLARITY_INVERTED>;
+		brightness-levels = <0 10 20 30 40 50 60 70 80 90 100>;
+		default-brightness-level = <8>;
+	};
+*/
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+};
+
+&cpu0 {
+	cpu-supply = <&reg_dcdc2>;
+};
+
+&ehci0 {
+	status = "okay";
+};
+
+&i2c0 {
+	status = "okay";
+
+	axp209: pmic@34 {
+		reg = <0x34>;
+		interrupts = <0>;
+	};
+};
+
+#include "axp209.dtsi"
+
+&i2c1 {
+	status = "okay";
+
+	pcf8563: rtc@51 {
+		compatible = "nxp,pcf8563";
+		reg = <0x51>;
+	};
+};
+
+&lradc {
+	vref-supply = <&reg_ldo2>;
+	status = "okay";
+
+	button-200 {
+		label = "Volume Up";
+		linux,code = <KEY_VOLUMEUP>;
+		channel = <0>;
+		voltage = <200000>;
+	};
+
+	button-400 {
+		label = "Volume Down";
+		linux,code = <KEY_VOLUMEDOWN>;
+		channel = <0>;
+		voltage = <400000>;
+	};
+};
+
+/* PE4 enable??? */
+&mmc0 {
+	pinctrl-0 = <&mmc0_pins_a>;
+	vmmc-supply = <&reg_vcc3v3>;
+	bus-width = <4>;
+	cd-gpios = <&pio 6 0 GPIO_ACTIVE_LOW>; /* PG0 */
+	status = "okay";
+};
+
+&mmc2 {
+         pinctrl-names = "default";
+         pinctrl-0 = <&mmc2_4bit_pins_a>;
+         vmmc-supply = <&reg_vcc3v3>;
+         bus-width = <4>;
+         non-removable;
+         status = "okay";
+};
+
+&otg_sram {
+	status = "okay";
+};
+
+/*
+&pwm {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pwm0_pin>;
+	status = "okay";
+};
+*/
+
+&reg_dcdc2 {
+	regulator-always-on;
+	regulator-min-microvolt = <1000000>;
+	regulator-max-microvolt = <1400000>;
+	regulator-name = "vdd-cpu";
+};
+
+&reg_dcdc3 {
+	regulator-always-on;
+	regulator-min-microvolt = <1200000>;
+	regulator-max-microvolt = <1200000>;
+	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";
+};
+
+&reg_usb0_vbus {
+	gpio = <&pio 6 12 GPIO_ACTIVE_HIGH>; /* PG12 */
+	status = "okay";
+};
+
+&reg_usb1_vbus {
+	gpio = <&pio 6 11 GPIO_ACTIVE_HIGH>; /* PG11 */
+	status = "okay";
+};
+
+&uart1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart1_pins_b>;
+	status = "okay";
+};
+
+&usb_otg {
+	dr_mode = "otg";
+	status = "okay";
+};
+
+&usbphy {
+//	usb0_id_det-gpios = <&pio 6 2 (GPIO_ACTIVE_HIGH | GPIO_PULL_UP)>; /* PG2 */
+//	usb0_vbus_det-gpios = <&pio 6 1 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>; /* PG1 */
+	usb0_id_det-gpios = <&pio 6 2 GPIO_ACTIVE_HIGH>; /* PG2 */
+	usb0_vbus_det-gpios = <&pio 6 1 GPIO_ACTIVE_HIGH>; /* PG1 */
+	usb0_vbus-supply = <&reg_usb0_vbus>;
+	usb1_vbus-supply = <&reg_usb1_vbus>;
+	status = "okay";
+};

configs/pocketbook_touch_lux_3_defconfig

@@ -0,0 +1,43 @@
+CONFIG_ARM=y
+CONFIG_ARCH_SUNXI=y
+CONFIG_NR_DRAM_BANKS=1
+CONFIG_SPL=y
+CONFIG_MACH_SUN5I=y
+CONFIG_DRAM_CLK=408
+CONFIG_DRAM_EMR1=0
+CONFIG_MMC0_CD_PIN="PG0"
+CONFIG_CONS_INDEX=2
+CONFIG_MMC_SUNXI_SLOT_EXTRA=2
+CONFIG_MMC2_BUS_WIDTH=4
+CONFIG_AXP_GPIO=y
+CONFIG_SPL_I2C_SUPPORT=y
+CONFIG_DEFAULT_DEVICE_TREE="sun5i-a13-pocketbook-touch-lux-3"
+# CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
+# CONFIG_CMD_FLASH is not set
+# CONFIG_SPL_DOS_PARTITION is not set
+# CONFIG_SPL_EFI_PARTITION is not set
+# CONFIG_SUN8I_EMAC is not set
+# CONFIG_NET is not set
+# CONFIG_DM_ETH is not set
+# CONFIG_CMD_NET is not set
+# CONFIG_CMD_DHCP is not set
+# CONFIG_CMD_PXE is not set
+# CONFIG_CMD_NFS is not set
+# CONFIG_CMD_MII is not set
+# CONFIG_CMD_PING is not set
+# CONFIG_DISTRO_DEFAULTS is not set
+# CONFIG_VIDEO_SUNXI is not set
+# CONFIG_VIDEO_HDMI is not set
+# CONFIG_VIDEO is not set
+CONFIG_CMD_FAT=y
+CONFIG_CMD_FS_GENERIC=y
+CONFIG_CMD_PART=y
+CONFIG_HUSH_PARSER=y
+CONFIG_BOOTDELAY=0
+CONFIG_ISO_PARTITION=y
+CONFIG_SYS_CONSOLE_INFO_QUIET=y
+CONFIG_CMD_BOOTZ=y
+#CONFIG_USB0_VBUS_PIN="PG12"
+#CONFIG_USB0_VBUS_DET="PG1"
+#CONFIG_USB0_ID_DET="PG2"
+