The RS-90, better known as RetroMini, is a small and pocketable handheld
gaming console from YLMChina. It has little more than a JZ4725B SoC, a
NAND, a screen, some buttons and a speaker.
Signed-off-by: Paul Cercueil <paul@xxxxxxxxxxxxxxx>
---
arch/mips/boot/dts/ingenic/Makefile | 1 +
arch/mips/boot/dts/ingenic/rs90.dts | 311 ++++++++++++++++++++++++++++
arch/mips/jz4740/Kconfig | 4 +
3 files changed, 316 insertions(+)
create mode 100644 arch/mips/boot/dts/ingenic/rs90.dts
diff --git a/arch/mips/boot/dts/ingenic/Makefile b/arch/mips/boot/dts/ingenic/Makefile
index e1654291a7b0..f23ff5109e5b 100644
--- a/arch/mips/boot/dts/ingenic/Makefile
+++ b/arch/mips/boot/dts/ingenic/Makefile
@@ -1,5 +1,6 @@
# SPDX-License-Identifier: GPL-2.0
dtb-$(CONFIG_JZ4740_QI_LB60) += qi_lb60.dtb
+dtb-$(CONFIG_JZ4740_RS90) += rs90.dtb
dtb-$(CONFIG_JZ4770_GCW0) += gcw0.dtb
dtb-$(CONFIG_JZ4780_CI20) += ci20.dtb
dtb-$(CONFIG_X1000_CU1000_NEO) += cu1000-neo.dtb
diff --git a/arch/mips/boot/dts/ingenic/rs90.dts b/arch/mips/boot/dts/ingenic/rs90.dts
new file mode 100644
index 000000000000..246f97efe5ef
--- /dev/null
+++ b/arch/mips/boot/dts/ingenic/rs90.dts
@@ -0,0 +1,311 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+
+#include "jz4725b.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/iio/adc/ingenic,adc.h>
+#include <dt-bindings/input/linux-event-codes.h>
+
+/ {
+ compatible = "ylm,rs90", "ingenic,jz4725b";
+ model = "RS-90";
+
+ memory {
+ device_type = "memory";
+ reg = <0x0 0x2000000>;
+ };
+
+ vcc: regulator {
+ compatible = "regulator-fixed";
+
+ regulator-name = "vcc";
+ regulaor-min-microvolt = <3300000>;
+ regulaor-max-microvolt = <3300000>;
+ regulator-always-on;
+ };
+
+ backlight: backlight {
+ compatible = "pwm-backlight";
+ pwms = <&pwm 3 40000 0>;
+
+ brightness-levels = <0 16 32 48 64 80 112 144 192 255>;
+ default-brightness-level = <8>;
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&pins_pwm3>;
+
+ power-supply = <&vcc>;
+ };
+
+ keys@0 {
+ compatible = "gpio-keys";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ key@0 {
+ label = "D-pad up";
+ linux,code = <KEY_UP>;
+ gpios = <&gpc 10 GPIO_ACTIVE_LOW>;
+ };
+
+ key@1 {
+ label = "D-pad down";
+ linux,code = <KEY_DOWN>;
+ gpios = <&gpc 11 GPIO_ACTIVE_LOW>;
+ };
+
+ key@2 {
+ label = "D-pad left";
+ linux,code = <KEY_LEFT>;
+ gpios = <&gpb 31 GPIO_ACTIVE_LOW>;
+ };
+
+ key@3 {
+ label = "D-pad right";
+ linux,code = <KEY_RIGHT>;
+ gpios = <&gpd 21 GPIO_ACTIVE_LOW>;
+ };
+
+ key@4 {
+ label = "Button A";
+ linux,code = <KEY_LEFTCTRL>;
+ gpios = <&gpc 31 GPIO_ACTIVE_LOW>;
+ };
+
+ key@5 {
+ label = "Button B";
+ linux,code = <KEY_LEFTALT>;
+ gpios = <&gpc 30 GPIO_ACTIVE_LOW>;
+ };
+
+ key@6 {
+ label = "Right shoulder button";
+ linux,code = <KEY_BACKSPACE>;
+ gpios = <&gpc 12 GPIO_ACTIVE_LOW>;
+ debounce-interval = <10>;
+ };
+
+ key@7 {
+ label = "Start button";
+ linux,code = <KEY_ENTER>;
+ gpios = <&gpd 17 GPIO_ACTIVE_LOW>;
+ };
+ };
+
+ keys@1 {
+ compatible = "adc-keys";
+ io-channels = <&adc INGENIC_ADC_AUX>;
+ io-channel-names = "buttons";
+ keyup-threshold-microvolt = <1400000>;
+ poll-interval = <30>;
+
+ key@0 {
+ label = "Left shoulder button";
+ linux,code = <KEY_TAB>;
+ press-threshold-microvolt = <800000>;
+ };
+
+ key@1 {
+ label = "Select button";
+ linux,code = <KEY_ESC>;
+ press-threshold-microvolt = <1100000>;
+ };
+ };
+
+ amp: analog-amplifier {
+ compatible = "simple-audio-amplifier";
+ enable-gpios = <&gpc 15 GPIO_ACTIVE_HIGH>;
+
+ VCC-supply = <&vcc>;
+ };
+
+ sound {
+ compatible = "simple-audio-card";
+
+ simple-audio-card,name = "rs90-audio";
+ simple-audio-card,format = "i2s";
+
+ simple-audio-card,widgets =
+ "Speaker", "Speaker",
+ "Headphone", "Headphones";
+ simple-audio-card,routing =
+ "INL", "LHPOUT",
+ "INR", "RHPOUT",
+ "Headphones", "LHPOUT",
+ "Headphones", "RHPOUT",
+ "Speaker", "OUTL",
+ "Speaker", "OUTR";
+ simple-audio-card,pin-switches = "Speaker";
+
+ simple-audio-card,hp-det-gpio = <&gpd 16 GPIO_ACTIVE_LOW>;
+ simple-audio-card,aux-devs = <&>;
+
+ simple-audio-card,bitclock-master = <&dai_codec>;
+ simple-audio-card,frame-master = <&dai_codec>;
+
+ dai_cpu: simple-audio-card,cpu {
+ sound-dai = <&aic>;
+ };
+
+ dai_codec: simple-audio-card,codec {
+ sound-dai = <&codec>;
+ };
+
+ };
+
+ usb_phy: usb-phy {
+ compatible = "usb-nop-xceiv";
+ #phy-cells = <0>;
+
+ clocks = <&cgu JZ4725B_CLK_UDC_PHY>;
+ clock-names = "main_clk";
+ vcc-supply = <&vcc>;
+ };
+
+ panel {
+ compatible = "sharp,ls020b1dd01d";
+
+ backlight = <&backlight>;
+ power-supply = <&vcc>;
+
+ port {
+ panel_input: endpoint {
+ remote-endpoint = <&panel_output>;
+ };
+ };
+ };
+};
+
+&ext {
+ clock-frequency = <12000000>;
+};
+
+&rtc_dev {
+ system-power-controller;
+};
+
+&udc {
+ phys = <&usb_phy>;
+};
+
+&pinctrl {
+ pins_mmc1: mmc1 {
+ function = "mmc1";
+ groups = "mmc1-1bit";
+ };
+
+ pins_nemc: nemc {
+ function = "nand";
+ groups = "nand-cs1", "nand-cle-ale", "nand-fre-fwe";
+ };
+
+ pins_pwm3: pwm3 {
+ function = "pwm3";
+ groups = "pwm3";
+ bias-disable;
+ };
+
+ pins_lcd: lcd {
+ function = "lcd";
+ groups = "lcd-8bit", "lcd-16bit", "lcd-special";
+ };
+};
+
+&mmc0 {
+ status = "disabled";
+};
+
+&mmc1 {
+ bus-width = <1>;
+ max-frequency = <48000000>;
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&pins_mmc1>;
+
+ cd-gpios = <&gpc 20 GPIO_ACTIVE_LOW>;
+};
+
+&uart {
+ /*
+ * The pins for RX/TX are used for the right shoulder button and
+ * backlight PWM.
+ */
+ status = "disabled";
+};
+
+&nemc {
+ nandc: nand-controller@1 {
+ compatible = "ingenic,jz4725b-nand";
+ reg = <1 0 0x4000000>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ ecc-engine = <&bch>;
+
+ ingenic,nemc-tAS = <10>;
+ ingenic,nemc-tAH = <5>;
+ ingenic,nemc-tBP = <10>;
+ ingenic,nemc-tAW = <15>;
+ ingenic,nemc-tSTRV = <100>;
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&pins_nemc>;
+
+ rb-gpios = <&gpc 27 GPIO_ACTIVE_HIGH>;
+
+ nand@1 {
+ reg = <1>;
+
+ nand-ecc-step-size = <512>;
+ nand-ecc-strength = <8>;
+ nand-ecc-mode = "hw";
+ nand-is-boot-medium;
+ nand-on-flash-bbt;
+
+ partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ partition@0 {
+ label = "bootloader";
+ reg = <0x0 0x20000>;
+ };
+
+ partition@20000 {
+ label = "system";
+ reg = <0x20000 0x0>;
+ };
+ };
+ };
+ };
+};
+
+&cgu {
+ /* Use 32kHz oscillator as the parent of the RTC clock */
+ assigned-clocks = <&cgu JZ4725B_CLK_RTC>;
+ assigned-clock-parents = <&cgu JZ4725B_CLK_OSC32K>;
+};
+
+&tcu {
+ /*
+ * 750 kHz for the system timer and clocksource, and use RTC as the
+ * parent for the watchdog clock.
+ */
+ assigned-clocks = <&tcu TCU_CLK_TIMER0>, <&tcu TCU_CLK_TIMER1>, <&tcu TCU_CLK_WDT>;
+ assigned-clock-parents = <0>, <0>, <&cgu JZ4725B_CLK_RTC>;
+ assigned-clock-rates = <750000>, <750000>;
+};
+
+&lcd {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pins_lcd>;
+
+ port {
+ panel_output: endpoint {
+ remote-endpoint = <&panel_input>;
+ };
+ };
+};
diff --git a/arch/mips/jz4740/Kconfig b/arch/mips/jz4740/Kconfig
index 0325153efbd4..baa315c8183a 100644
--- a/arch/mips/jz4740/Kconfig
+++ b/arch/mips/jz4740/Kconfig
@@ -15,6 +15,10 @@ config JZ4740_QI_LB60
bool "Qi Hardware Ben NanoNote"
select MACH_JZ4740
+config JZ4740_RS90
+ bool "YLM RetroMini (RS-90)"
+ select MACH_JZ4725B
+
config JZ4770_GCW0
bool "Game Consoles Worldwide GCW Zero"
select MACH_JZ4770
--
2.27.0
