riscv: dts: allwinner: Add Allwinner D1 Nezha devicetree

"D1 Nezha" is Allwinner's first-party development board for the D1 SoC.
It was shipped with 512M, 1G, or 2G of DDR3. It supports onboard audio,
HDMI, gigabit Ethernet, WiFi and Bluetooth, USB 2.0 host and OTG ports,
plus low-speed I/O from the SoC and a GPIO expander chip.

Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
Reviewed-by: Guo Ren <guoren@kernel.org>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Conor Dooley <conor.dooley@microchip.com>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Samuel Holland <samuel@sholland.org>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230126045738.47903-7-samuel@sholland.org
Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>

diff --git a/arch/riscv/boot/dts/allwinner/Makefile b/arch/riscv/boot/dts/allwinner/Makefile
index 2f27925..277e59d 100644 (file)
--- a/arch/riscv/boot/dts/allwinner/Makefile
+++ b/arch/riscv/boot/dts/allwinner/Makefile
@@ -1,2 +1,3 @@
 # SPDX-License-Identifier: GPL-2.0
+dtb-$(CONFIG_ARCH_SUNXI) += sun20i-d1-nezha.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun20i-d1s-mangopi-mq.dtb

diff --git a/arch/riscv/boot/dts/allwinner/sun20i-d1-nezha.dts b/arch/riscv/boot/dts/allwinner/sun20i-d1-nezha.dts
new file mode 100644 (file)
index 0000000..a076918
--- /dev/null
+++ b/arch/riscv/boot/dts/allwinner/sun20i-d1-nezha.dts
@@ -0,0 +1,166 @@
+// SPDX-License-Identifier: (GPL-2.0+ or MIT)
+// Copyright (C) 2021-2022 Samuel Holland <samuel@sholland.org>
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/dts-v1/;
+
+#include "sun20i-d1.dtsi"
+#include "sun20i-common-regulators.dtsi"
+
+/ {
+       model = "Allwinner D1 Nezha";
+       compatible = "allwinner,d1-nezha", "allwinner,sun20i-d1";
+
+       aliases {
+               ethernet0 = &emac;
+               ethernet1 = &xr829;
+               serial0 = &uart0;
+       };
+
+       chosen {
+               stdout-path = "serial0:115200n8";
+       };
+
+       reg_usbvbus: usbvbus {
+               compatible = "regulator-fixed";
+               regulator-name = "usbvbus";
+               regulator-min-microvolt = <5000000>;
+               regulator-max-microvolt = <5000000>;
+               gpio = <&pio 3 19 GPIO_ACTIVE_HIGH>; /* PD19 */
+               enable-active-high;
+               vin-supply = <&reg_vcc>;
+       };
+
+       /*
+        * This regulator is PWM-controlled, but the PWM controller is not
+        * yet supported, so fix the regulator to its default voltage.
+        */
+       reg_vdd_cpu: vdd-cpu {
+               compatible = "regulator-fixed";
+               regulator-name = "vdd-cpu";
+               regulator-min-microvolt = <1100000>;
+               regulator-max-microvolt = <1100000>;
+               vin-supply = <&reg_vcc>;
+       };
+
+       wifi_pwrseq: wifi-pwrseq {
+               compatible = "mmc-pwrseq-simple";
+               reset-gpios = <&pio 6 12 GPIO_ACTIVE_LOW>; /* PG12 */
+       };
+};
+
+&cpu0 {
+       cpu-supply = <&reg_vdd_cpu>;
+};
+
+&dcxo {
+       clock-frequency = <24000000>;
+};
+
+&ehci0 {
+       status = "okay";
+};
+
+&ehci1 {
+       status = "okay";
+};
+
+&emac {
+       pinctrl-0 = <&rgmii_pe_pins>;
+       pinctrl-names = "default";
+       phy-handle = <&ext_rgmii_phy>;
+       phy-mode = "rgmii-id";
+       phy-supply = <&reg_vcc_3v3>;
+       status = "okay";
+};
+
+&i2c2 {
+       pinctrl-0 = <&i2c2_pb0_pins>;
+       pinctrl-names = "default";
+       status = "okay";
+
+       pcf8574a: gpio@38 {
+               compatible = "nxp,pcf8574a";
+               reg = <0x38>;
+               interrupt-parent = <&pio>;
+               interrupts = <1 2 IRQ_TYPE_LEVEL_LOW>; /* PB2 */
+               interrupt-controller;
+               gpio-controller;
+               #gpio-cells = <2>;
+               #interrupt-cells = <2>;
+       };
+};
+
+&mdio {
+       ext_rgmii_phy: ethernet-phy@1 {
+               compatible = "ethernet-phy-ieee802.3-c22";
+               reg = <1>;
+       };
+};
+
+&mmc0 {
+       bus-width = <4>;
+       cd-gpios = <&pio 5 6 GPIO_ACTIVE_HIGH>; /* PF6 */
+       disable-wp;
+       vmmc-supply = <&reg_vcc_3v3>;
+       vqmmc-supply = <&reg_vcc_3v3>;
+       pinctrl-0 = <&mmc0_pins>;
+       pinctrl-names = "default";
+       status = "okay";
+};
+
+&mmc1 {
+       bus-width = <4>;
+       mmc-pwrseq = <&wifi_pwrseq>;
+       non-removable;
+       vmmc-supply = <&reg_vcc_3v3>;
+       vqmmc-supply = <&reg_vcc_3v3>;
+       pinctrl-0 = <&mmc1_pins>;
+       pinctrl-names = "default";
+       status = "okay";
+
+       xr829: wifi@1 {
+               reg = <1>;
+               interrupt-parent = <&pio>;
+               interrupts = <6 10 IRQ_TYPE_LEVEL_LOW>; /* PG10 */
+               interrupt-names = "host-wake";
+       };
+};
+
+&ohci0 {
+       status = "okay";
+};
+
+&ohci1 {
+       status = "okay";
+};
+
+&uart0 {
+       pinctrl-0 = <&uart0_pb8_pins>;
+       pinctrl-names = "default";
+       status = "okay";
+};
+
+&uart1 {
+       uart-has-rtscts;
+       pinctrl-0 = <&uart1_pg6_pins>, <&uart1_pg8_rts_cts_pins>;
+       pinctrl-names = "default";
+       status = "okay";
+
+       /* XR829 bluetooth is connected here */
+};
+
+&usb_otg {
+       dr_mode = "otg";
+       status = "okay";
+};
+
+&usbphy {
+       usb0_id_det-gpios = <&pio 3 21 GPIO_ACTIVE_HIGH>; /* PD21 */
+       usb0_vbus_det-gpios = <&pio 3 20 GPIO_ACTIVE_HIGH>; /* PD20 */
+       usb0_vbus-supply = <&reg_usbvbus>;
+       usb1_vbus-supply = <&reg_vcc>;
+       status = "okay";
+};