[PATCH v5 2/4] arm64: dts: allwinner: h700: Add RG35XX 2024 DTS

Ryan Walklin
2024-04-26T21:41:58Z

The base model RG35XX (2024) is a handheld gaming device based on an
Allwinner H700 chip.

The H700 is a H616 variant (4x ARM Cortex-A53 cores @ 1.5Ghz with Mali G31
GPU) which exposes RGB LCD and NMI pins.

Device features:
- Allwinner H700 @ 1.5GHz
- 1GB LPDDR4 DRAM
- X-Powers AXP717 PMIC
- 3.5" 640x480 RGB LCD
- Two microSD slots
- Mini-HDMI out
- GPIO keypad
- 3.5mm headphone jack
- USB-C charging port

Enabled in this DTS:
- AXP717 PMIC with RSB serial interface, regulators and NMI interrupt
controller
- Power LED (charge LED on device controlled directly by PMIC)
- Serial UART (accessible from headers on the board)
- MMC slots (SD2 appears to have a GPIO-switched regulator for 1.8v
low-voltage signalling, this is not yet modeled so a fixed-regulator and
3.3v and 1.8v rails from the PMIC are used. A switched regulator will be
confirmed and posted in a follow-up patch)

Signed-off-by: Ryan Walklin <ryan@testtoast.com>
---
Changelog v1..v2:
- Update copyright
- Spaces -> Tabs
- Add cpufreq support
- Remove MMC aliases
- Fix GPIO button and regulator node names
- Note unused AXP717 regulators
- Update regulators for SD slots
- Remove unused I2C3 device
- Update NMI interrupt controller for AXP717, requires H616 support patch in dt-next [1]
- Add chassis-type
- Address USB EHCI/OHCI0 correctly and add usb vbus supply
- Add PIO vcc-pg-supply
- Correct boost regulator voltage and name

Changelog v2..v3:
- Remove cpufreq support (patch still pending for 6.10, will followup with enablement patch once opp table merged)
- Add dtb to Makefile
- Remove unnecessary duplicated PLL regulator
- Remove unimplemented/not-present drive-vbus feature from AXP717
- Rename CLDO3 to "vcc-io", inferring function from board testing by Chris Morgan
- Correct MMC1 vmmc-supply to CLDO3 and MMC2 to CLDO4
- Reduce DCDC1 "vdd-cpu" supply voltage range to 0.9v-1.1v to match lowest OPP voltage
- Identify DCDC2 as GPU supply - rename to "vdd-gpu-sys", remove always-on and use fixed 0.94v voltage
- Fix indentation
- Correct boot/always-on states and voltages for various regulators from vendor BSP
- Change USB-OTG mode to "peripheral" and correct comment
- Correct and add remaining PIO supplies
- Move volume key GPIOs to separate block to allow key repeat
- Alphabetically orrder gamepad GPIOs
- Move changelog and links below fold-line
- Remove USB 3.3v VCC-USB and VCC-SD2 regulators pending further hardware investigation (to be submitted as subsequent patch)
- Constrain boost regulator voltage to 5.0v to 5.2v to capture default voltage of 5.126v

Changelog v3..v4:
- Cluster USB nodes
- Do not define voltage range for currently unused CLDO1 (connected to audio codec according to vendor BSP - driver not yet implemented) and ALDO3 (1.8v).
- Note voltages set for currently unused regulators from vendor BSP in comments to aid identification
- Remove regulator-boot-on from several regulators where it was not required
- Fix indentation
- Add "disable-wp" for SD2 as for SD1 (doesn't make sense for micro-SD)
- Restore fixed 3.3v regulator for SD2 (vcc_3v3_sd2), which is required for SD2 to function. ALDO1 appears to be the 1.8v supply required for low-voltage UHS-I signalling, however a GPIO pin to switch between the supplies is not yet confirmed (likely PE4) and will be implemented in a subsequent patch.

Changelog v4..v5:
- Remove comment referencing vendor BSP node
- Reorder nodes alphabetically and remove empty lines
- Add note to commit message about SD2 regulators, rename vcc_3v3_sd2

[1]: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git/commit/?h=dt/next&id=d47bca77bf3ab475c33b3929c33c80aeb49df35c

Signed-off-by: Ryan Walklin <ryan@testtoast.com>
---
arch/arm64/boot/dts/allwinner/Makefile | 1 +
.../sun50i-h700-anbernic-rg35xx-2024.dts | 346 ++++++++++++++++++
2 files changed, 347 insertions(+)
create mode 100644 arch/arm64/boot/dts/allwinner/sun50i-h700-anbernic-rg35xx-2024.dts

diff --git a/arch/arm64/boot/dts/allwinner/Makefile b/arch/arm64/boot/dts/allwinner/Makefile
index 21149b346a60..6f997157968e 100644
--- a/arch/arm64/boot/dts/allwinner/Makefile
+++ b/arch/arm64/boot/dts/allwinner/Makefile
@@ -47,3 +47,4 @@ dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h618-longanpi-3h.dtb
dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h618-orangepi-zero2w.dtb
dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h618-orangepi-zero3.dtb
dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h618-transpeed-8k618-t.dtb
+dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h700-anbernic-rg35xx-2024.dtb
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h700-anbernic-rg35xx-2024.dts b/arch/arm64/boot/dts/allwinner/sun50i-h700-anbernic-rg35xx-2024.dts
new file mode 100644
index 000000000000..b90ffa7785c8
--- /dev/null
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h700-anbernic-rg35xx-2024.dts
@@ -0,0 +1,346 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Copyright (C) 2024 Ryan Walklin <ryan@testtoast.com>.
+ */
+
+/dts-v1/;
+
+#include "sun50i-h616.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/linux-event-codes.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/leds/common.h>
+
+/ {
+ model = "Anbernic RG35XX 2024";
+ chassis-type = "handset";
+ compatible = "anbernic,rg35xx-2024", "allwinner,sun50i-h700";
+
+ aliases {
+ serial0 = &uart0;
+ };
+
+ chosen {
+ stdout-path = "serial0:115200n8";
+ };
+
+ gpio_keys_gamepad: gpio-keys-gamepad {
+ compatible = "gpio-keys";
+
+ button-a {
+ label = "Action-Pad A";
+ gpios = <&pio 0 0 GPIO_ACTIVE_LOW>; /* PA0 */
+ linux,input-type = <EV_KEY>;
+ linux,code = <BTN_EAST>;
+ };
+
+ button-b {
+ label = "Action-Pad B";
+ gpios = <&pio 0 1 GPIO_ACTIVE_LOW>; /* PA1 */
+ linux,input-type = <EV_KEY>;
+ linux,code = <BTN_SOUTH>;
+ };
+
+ button-down {
+ label = "D-Pad Down";
+ gpios = <&pio 4 0 GPIO_ACTIVE_LOW>; /* PE0 */
+ linux,input-type = <EV_KEY>;
+ linux,code = <BTN_DPAD_DOWN>;
+ };
+
+ button-l1 {
+ label = "Key L1";
+ gpios = <&pio 0 10 GPIO_ACTIVE_LOW>; /* PA10 */
+ linux,input-type = <EV_KEY>;
+ linux,code = <BTN_TL>;
+ };
+
+ button-l2 {
+ label = "Key L2";
+ gpios = <&pio 0 11 GPIO_ACTIVE_LOW>; /* PA11 */
+ linux,input-type = <EV_KEY>;
+ linux,code = <BTN_TL2>;
+ };
+
+ button-left {
+ label = "D-Pad left";
+ gpios = <&pio 0 8 GPIO_ACTIVE_LOW>; /* PA8 */
+ linux,input-type = <EV_KEY>;
+ linux,code = <BTN_DPAD_LEFT>;
+ };
+
+ button-menu {
+ label = "Key Menu";
+ gpios = <&pio 4 3 GPIO_ACTIVE_LOW>; /* PE3 */
+ linux,input-type = <EV_KEY>;
+ linux,code = <BTN_MODE>;
+ };
+
+ button-r1 {
+ label = "Key R1";
+ gpios = <&pio 0 12 GPIO_ACTIVE_LOW>; /* PA12 */
+ linux,input-type = <EV_KEY>;
+ linux,code = <BTN_TR>;
+ };
+
+ button-r2 {
+ label = "Key R2";
+ gpios = <&pio 0 7 GPIO_ACTIVE_LOW>; /* PA7 */
+ linux,input-type = <EV_KEY>;
+ linux,code = <BTN_TR2>;
+ };
+
+ button-right {
+ label = "D-Pad Right";
+ gpios = <&pio 0 9 GPIO_ACTIVE_LOW>; /* PA9 */
+ linux,input-type = <EV_KEY>;
+ linux,code = <BTN_DPAD_RIGHT>;
+ };
+
+ button-select {
+ label = "Key Select";
+ gpios = <&pio 0 5 GPIO_ACTIVE_LOW>; /* PA5 */
+ linux,input-type = <EV_KEY>;
+ linux,code = <BTN_SELECT>;
+ };
+ button-start {
+ label = "Key Start";
+ gpios = <&pio 0 4 GPIO_ACTIVE_LOW>; /* PA4 */
+ linux,input-type = <EV_KEY>;
+ linux,code = <BTN_START>;
+ };
+
+ button-up {
+ label = "D-Pad Up";
+ gpios = <&pio 0 6 GPIO_ACTIVE_LOW>; /* PA6 */
+ linux,input-type = <EV_KEY>;
+ linux,code = <BTN_DPAD_UP>;
+ };
+
+ button-x {
+ label = "Action-Pad X";
+ gpios = <&pio 0 3 GPIO_ACTIVE_LOW>; /* PA3 */
+ linux,input-type = <EV_KEY>;
+ linux,code = <BTN_NORTH>;
+ };
+
+ button-y {
+ label = "Action Pad Y";
+ gpios = <&pio 0 2 GPIO_ACTIVE_LOW>; /* PA2 */
+ linux,input-type = <EV_KEY>;
+ linux,code = <BTN_WEST>;
+ };
+ };
+
+ gpio-keys-volume {
+ compatible = "gpio-keys";
+ autorepeat;
+
+ button-vol-up {
+ label = "Key Volume Up";
+ gpios = <&pio 4 1 GPIO_ACTIVE_LOW>; /* PE1 */
+ linux,input-type = <EV_KEY>;
+ linux,code = <KEY_VOLUMEUP>;
+ };
+
+ button-vol-down {
+ label = "Key Volume Down";
+ gpios = <&pio 4 2 GPIO_ACTIVE_LOW>; /* PE2 */
+ linux,input-type = <EV_KEY>;
+ linux,code = <KEY_VOLUMEDOWN>;
+ };
+ };
+
+ leds {
+ compatible = "gpio-leds";
+
+ led-0 {
+ function = LED_FUNCTION_POWER;
+ color = <LED_COLOR_ID_GREEN>;
+ gpios = <&pio 8 12 GPIO_ACTIVE_HIGH>; /* PI12 */
+ default-state = "on";
+ };
+ };
+
+ reg_vcc5v: regulator-vcc5v { /* USB-C power input */
+ compatible = "regulator-fixed";
+ regulator-name = "vcc-5v";
+ regulator-min-microvolt = <5000000>;
+ regulator-max-microvolt = <5000000>;
+ };
+
+ vcc_3v3_sd2: regulator-3v3-sd2 { /* GPIO-controlled regulator for SD2 IO */
+ compatible = "regulator-fixed";
+ gpio = <&pio 4 4 GPIO_ACTIVE_HIGH>; /* PE4 */
+ regulator-name = "vcc_3v3_sd2";
+ regulator-max-microvolt = <3300000>;
+ regulator-min-microvolt = <3300000>;
+ };
+};
+
+&cpu0 {
+ cpu-supply = <&reg_dcdc1>;
+};
+
+&ehci0 {
+ status = "okay";
+};
+
+&mmc0 {
+ vmmc-supply = <&reg_cldo3>;
+ disable-wp;
+ cd-gpios = <&pio 5 6 GPIO_ACTIVE_LOW>; /* PF6 */
+ bus-width = <4>;
+ status = "okay";
+};
+
+&mmc2 {
+ vmmc-supply = <&reg_cldo4>;
+ vqmmc-supply = <&reg_aldo1>;
+ disable-wp;
+ cd-gpios = <&pio 4 22 GPIO_ACTIVE_LOW>; /* PE22 */
+ bus-width = <4>;
+ status = "okay";
+};
+
+&r_rsb {
+ status = "okay";
+
+ axp717: pmic@3a3 {
+ compatible = "x-powers,axp717";
+ reg = <0x3a3>;
+ interrupt-controller;
+ #interrupt-cells = <1>;
+ interrupt-parent = <&nmi_intc>;
+ interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
+
+ vin1-supply = <&reg_vcc5v>;
+ vin2-supply = <&reg_vcc5v>;
+ vin3-supply = <&reg_vcc5v>;
+ vin4-supply = <&reg_vcc5v>;
+
+ regulators {
+ reg_dcdc1: dcdc1 {
+ regulator-always-on;
+ regulator-min-microvolt = <900000>;
+ regulator-max-microvolt = <1100000>;
+ regulator-name = "vdd-cpu";
+ };
+
+ reg_dcdc2: dcdc2 {
+ regulator-always-on;
+ regulator-min-microvolt = <940000>;
+ regulator-max-microvolt = <940000>;
+ regulator-name = "vdd-gpu-sys";
+ };
+
+ reg_dcdc3: dcdc3 {
+ regulator-always-on;
+ regulator-min-microvolt = <1100000>;
+ regulator-max-microvolt = <1100000>;
+ regulator-name = "vdd-dram";
+ };
+
+ reg_aldo1: aldo1 {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-name = "vcc-sd2";
+ };
+
+ reg_aldo2: aldo2 {
+ /* 1.8v - unused */
+ };
+
+ reg_aldo3: aldo3 {
+ /* 1.8v - unused */
+ };
+
+ reg_aldo4: aldo4 {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-name = "vcc-pg";
+ };
+
+ reg_bldo1: bldo1 {
+ /* 1.8v - unused */
+ };
+
+ reg_bldo2: bldo2 {
+ regulator-always-on;
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-name = "vcc-pll";
+ };
+
+ reg_bldo3: bldo3 {
+ /* 2.8v - unused */
+ };
+
+ reg_bldo4: bldo4 {
+ /* 1.2v - unused */
+ };
+
+ reg_cldo1: cldo1 {
+ /* 3.3v - audio codec - not yet implemented */
+ };
+
+ reg_cldo2: cldo2 {
+ /* 3.3v - unused */
+ };
+
+ reg_cldo3: cldo3 {
+ regulator-always-on;
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-name = "vcc-io";
+ };
+
+ reg_cldo4: cldo4 {
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-name = "vcc-wifi";
+ };
+
+ reg_boost: boost {
+ regulator-min-microvolt = <5000000>;
+ regulator-max-microvolt = <5200000>;
+ regulator-name = "boost";
+ };
+
+ reg_cpusldo: cpusldo {
+ /* unused */
+ };
+ };
+ };
+};
+
+&ohci0 {
+ status = "okay";
+};
+
+&pio {
+ vcc-pa-supply = <&reg_cldo3>;
+ vcc-pc-supply = <&reg_cldo3>;
+ vcc-pe-supply = <&reg_cldo3>;
+ vcc-pf-supply = <&reg_cldo3>;
+ vcc-pg-supply = <&reg_aldo4>;
+ vcc-ph-supply = <&reg_cldo3>;
+ vcc-pi-supply = <&reg_cldo3>;
+};
+
+&uart0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart0_ph_pins>;
+ status = "okay";
+};
+
+/* the AXP717 has USB type-C role switch functionality, not yet described by the binding */
+&usbotg {
+ dr_mode = "peripheral"; /* USB type-C receptable */
+ status = "okay";
+};
+
+&usbphy {
+ status = "okay";
+};
--
2.44.0