From: Chris Morgan <macromorgan@xxxxxxxxxxx>
The Anbernic RG-Nano is a small portable game device based on the
Allwinner V3s SoC. It has GPIO buttons on the face and side for
input, a single mono speaker, a 240x240 SPI controlled display, a USB-C
OTG port, an SD card slot for booting, and 64MB of RAM included in the
SoC. There does not appear to be a crystal feeding the internal RTC so
it does not keep proper time (for me it ran 8 hours slow in a 24 hour
period). External RTC works just fine.
Working/Tested:
- SDMMC
- UART (for debugging)
- Buttons
- Charging/battery/PMIC
- Speaker
- RTC (external RTC)
- USB
- Display
Signed-off-by: Chris Morgan <macromorgan@xxxxxxxxxxx>
---
arch/arm/boot/dts/allwinner/Makefile | 1 +
.../allwinner/sun8i-v3s-anbernic-rg-nano.dts | 284 ++++++++++++++++++
2 files changed, 285 insertions(+)
create mode 100644 arch/arm/boot/dts/allwinner/sun8i-v3s-anbernic-rg-nano.dts
diff --git a/arch/arm/boot/dts/allwinner/Makefile b/arch/arm/boot/dts/allwinner/Makefile
index eebb5a0c873a..2d26c3397f14 100644
--- a/arch/arm/boot/dts/allwinner/Makefile
+++ b/arch/arm/boot/dts/allwinner/Makefile
@@ -256,6 +256,7 @@ dtb-$(CONFIG_MACH_SUN8I) += \
sun8i-t113s-mangopi-mq-r-t113.dtb \
sun8i-t3-cqa3t-bv3.dtb \
sun8i-v3-sl631-imx179.dtb \
+ sun8i-v3s-anbernic-rg-nano.dtb \
sun8i-v3s-licheepi-zero.dtb \
sun8i-v3s-licheepi-zero-dock.dtb \
sun8i-v40-bananapi-m2-berry.dtb
diff --git a/arch/arm/boot/dts/allwinner/sun8i-v3s-anbernic-rg-nano.dts b/arch/arm/boot/dts/allwinner/sun8i-v3s-anbernic-rg-nano.dts
new file mode 100644
index 000000000000..1a4429dc57b1
--- /dev/null
+++ b/arch/arm/boot/dts/allwinner/sun8i-v3s-anbernic-rg-nano.dts
@@ -0,0 +1,284 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+
+/dts-v1/;
+#include <dt-bindings/input/linux-event-codes.h>
+#include "sun8i-v3s.dtsi"
+#include "sunxi-common-regulators.dtsi"
+
+/ {
+ model = "Anbernic RG Nano";
+ compatible = "anbernic,rg-nano", "allwinner,sun8i-v3s";
+
+ aliases {
+ rtc0 = &pcf8563;
+ rtc1 = &rtc;
+ serial0 = &uart0;
+ };
+
+ backlight: backlight {
+ compatible = "pwm-backlight";
+ brightness-levels = <0 1 2 3 8 14 21 32 46 60 80 100>;
+ default-brightness-level = <11>;
+ power-supply = <®_vcc5v0>;
+ pwms = <&pwm 0 40000 1>;
+ };
+
+ chosen {
+ stdout-path = "serial0:115200n8";
+ };
+
+ gpio_keys: gpio-keys {
+ compatible = "gpio-keys";
+
+ button-a {
+ gpios = <&gpio_expander 12 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
+ label = "BTN-A";
+ linux,code = <BTN_EAST>;
+ };
+
+ button-b {
+ gpios = <&gpio_expander 14 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
+ label = "BTN-B";
+ linux,code = <BTN_SOUTH>;
+ };
+
+ button-down {
+ gpios = <&gpio_expander 1 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
+ label = "DPAD-DOWN";
+ linux,code = <BTN_DPAD_DOWN>;
+ };
+
+ button-left {
+ gpios = <&gpio_expander 4 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
+ label = "DPAD-LEFT";
+ linux,code = <BTN_DPAD_LEFT>;
+ };
+
+ button-right {
+ gpios = <&gpio_expander 0 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
+ label = "DPAD-RIGHT";
+ linux,code = <BTN_DPAD_RIGHT>;
+ };
+
+ button-se {
+ gpios = <&gpio_expander 7 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
+ label = "BTN-SELECT";
+ linux,code = <BTN_SELECT>;
+ };
+
+ button-st {
+ gpios = <&gpio_expander 6 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
+ label = "BTN-START";
+ linux,code = <BTN_START>;
+ };
+
+ button-tl {
+ gpios = <&gpio_expander 2 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
+ label = "BTN-L";
+ linux,code = <BTN_TL>;
+ };
+
+ button-tr {
+ gpios = <&gpio_expander 15 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
+ label = "BTN-R";
+ linux,code = <BTN_TR>;
+ };
+
+ button-up {
+ gpios = <&gpio_expander 3 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
+ label = "DPAD-UP";
+ linux,code = <BTN_DPAD_UP>;
+ };
+
+ button-x {
+ gpios = <&gpio_expander 11 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
+ label = "BTN-X";
+ linux,code = <BTN_NORTH>;
+ };
+
+ button-y {
+ gpios = <&gpio_expander 13 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
+ label = "BTN-Y";
+ linux,code = <BTN_WEST>;
+ };
+ };
+};
+
+&codec {
+ allwinner,audio-routing = "Speaker", "HP",
+ "MIC1", "Mic",
+ "Mic", "HBIAS";
+ allwinner,pa-gpios = <&pio 5 6 (GPIO_ACTIVE_HIGH | GPIO_PULL_UP)>; /* PF6 */
+ status = "okay";
+};
+
+&ehci {
+ status = "okay";
+};
+
+&i2c0 {
+ status = "okay";
+
+ gpio_expander: gpio@20 {
+ compatible = "nxp,pcal6416";
+ reg = <0x20>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ #interrupt-cells = <2>;
+ interrupt-controller;
+ interrupt-parent = <&pio>;
+ interrupts = <1 3 IRQ_TYPE_EDGE_BOTH>; /* PB3/EINT3 */
+ vcc-supply = <®_vcc3v3>;
+ };
+
+ axp209: pmic@34 {
+ reg = <0x34>;
+ interrupt-parent = <&pio>;
+ interrupts = <1 5 IRQ_TYPE_EDGE_FALLING>; /* PB5/EINT5 */
+ };
+
+ pcf8563: rtc@51 {
+ compatible = "nxp,pcf8563";
+ reg = <0x51>;
+ };
+};
+
+#include "axp209.dtsi"
+
+&battery_power_supply {
+ status = "okay";
+};
+
+&mmc0 {
+ broken-cd;
+ bus-width = <4>;
+ disable-wp;
+ vmmc-supply = <®_vcc3v3>;
+ vqmmc-supply = <®_vcc3v3>;
+ status = "okay";
+};
+
+&ohci {
+ status = "okay";
+};
+
+&pio {
+ vcc-pb-supply = <®_vcc3v3>;
+ vcc-pc-supply = <®_vcc3v3>;
+ vcc-pf-supply = <®_vcc3v3>;
+ vcc-pg-supply = <®_vcc3v3>;
+
+ spi0_no_miso_pins: spi0-no-miso-pins {
+ pins = "PC1", "PC2", "PC3";
+ function = "spi0";
+ };
+};
+
+&pwm {
+ pinctrl-0 = <&pwm0_pin>;
+ pinctrl-names = "default";
+ status = "okay";
+};
+
+/* DCDC2 wired into vdd-cpu, vdd-sys, and vdd-ephy. */
+®_dcdc2 {
+ regulator-always-on;
+ regulator-max-microvolt = <1250000>;
+ regulator-min-microvolt = <1250000>;
+ regulator-name = "vdd-cpu";
+};
+
+/* DCDC3 wired into every 3.3v input that isn't the RTC. */
+®_dcdc3 {
+ regulator-always-on;
+ regulator-max-microvolt = <3300000>;
+ regulator-min-microvolt = <3300000>;
+ regulator-name = "vcc-io";
+};
+
+/*
+ * LDO1 wired into RTC, voltage is hard-wired at 3.3v and cannot be
+ * software modified. Note that setting voltage here to 3.3v for accuracy
+ * sake causes an issue with the driver that causes it to fail to probe
+ * because of a voltage constraint in the driver.
+ */
+®_ldo1 {
+ regulator-always-on;
+ regulator-name = "vcc-rtc";
+};
+
+/* LDO2 wired into VCC-PLL and audio codec. */
+®_ldo2 {
+ regulator-always-on;
+ regulator-max-microvolt = <3000000>;
+ regulator-min-microvolt = <3000000>;
+ regulator-name = "vcc-pll";
+};
+
+/* LDO3, LDO4, and LDO5 unused. */
+®_ldo3 {
+ status = "disabled";
+};
+
+®_ldo4 {
+ status = "disabled";
+};
+
+/*
+ * Force the driver to use internal oscillator by removing clocks
+ * property.
+ */
+&rtc {
+ /delete-property/ clocks;
+};
+
+&spi0 {
+ pinctrl-0 = <&spi0_no_miso_pins>;
+ pinctrl-names = "default";
+ status = "okay";
+
+ display@0 {
+ compatible = "saef,sftc154b", "panel-mipi-dbi-spi";
+ reg = <0>;
+ backlight = <&backlight>;
+ dc-gpios = <&pio 2 0 GPIO_ACTIVE_HIGH>; /* PC0 */
+ reset-gpios = <&pio 1 2 GPIO_ACTIVE_HIGH>; /* PB2 */
+ spi-max-frequency = <100000000>;
+
+ height-mm = <39>;
+ width-mm = <39>;
+
+ /* Set hb-porch to compensate for non-visible area */
+ panel-timing {
+ hactive = <240>;
+ vactive = <240>;
+ hback-porch = <80>;
+ vback-porch = <0>;
+ clock-frequency = <0>;
+ hfront-porch = <0>;
+ hsync-len = <0>;
+ vfront-porch = <0>;
+ vsync-len = <0>;
+ };
+ };
+};
+
+&uart0 {
+ pinctrl-0 = <&uart0_pb_pins>;
+ pinctrl-names = "default";
+ status = "okay";
+};
+
+&usb_otg {
+ dr_mode = "otg";
+ status = "okay";
+};
+
+&usb_power_supply {
+ status = "okay";
+};
+
+&usbphy {
+ usb0_id_det-gpios = <&pio 6 5 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>; /* PG5 */
+ status = "okay";
+};
--
2.34.1
