arm64: dts: rockchip: Add Radxa ROCK S0

Radxa ROCK S0 is a single-board computer based on the Rockchip RK3308B
SoC in an ultra-compact form factor.

Add initial support for eMMC, SD-card, Ethernet, WiFi/BT and USB.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Link: https://lore.kernel.org/r/20240521212247.1240226-3-jonas@kwiboo.se
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

2 files changed, 294 insertions, 0 deletions

diff --git a/arch/arm64/boot/dts/rockchip/Makefile b/arch/arm64/boot/dts/rockchip/Makefile
index 3e5e9c833767..d80809038e8a 100644
--- a/arch/arm64/boot/dts/rockchip/Makefile
+++ b/arch/arm64/boot/dts/rockchip/Makefile
@@ -7,6 +7,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += px30-ringneck-haikou.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3308-evb.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3308-roc-cc.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3308-rock-pi-s.dtb
+dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3308-rock-s0.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3318-a95x-z2.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3326-anbernic-rg351m.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3326-anbernic-rg351v.dtb
diff --git a/arch/arm64/boot/dts/rockchip/rk3308-rock-s0.dts b/arch/arm64/boot/dts/rockchip/rk3308-rock-s0.dts
new file mode 100644
index 000000000000..bd6419a5c20a
--- /dev/null
+++ b/arch/arm64/boot/dts/rockchip/rk3308-rock-s0.dts
@@ -0,0 +1,293 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+
+/dts-v1/;
+
+#include <dt-bindings/leds/common.h>
+#include "rk3308.dtsi"
+
+/ {
+	model = "Radxa ROCK S0";
+	compatible = "radxa,rock-s0", "rockchip,rk3308";
+
+	aliases {
+		ethernet0 = &gmac;
+		mmc0 = &emmc;
+		mmc1 = &sdmmc;
+		mmc2 = &sdio;
+	};
+
+	chosen {
+		stdout-path = "serial0:1500000n8";
+	};
+
+	leds {
+		compatible = "gpio-leds";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pwr_led>;
+
+		led-green {
+			color = <LED_COLOR_ID_GREEN>;
+			default-state = "on";
+			function = LED_FUNCTION_HEARTBEAT;
+			gpios = <&gpio0 RK_PB6 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "heartbeat";
+		};
+	};
+
+	vdd_log: regulator-1v04-vdd-log {
+		compatible = "regulator-fixed";
+		regulator-name = "vdd_log";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <1040000>;
+		regulator-max-microvolt = <1040000>;
+		vin-supply = <&vcc5v0_sys>;
+	};
+
+	vcc_ddr: regulator-1v5-vcc-ddr {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_ddr";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <1500000>;
+		regulator-max-microvolt = <1500000>;
+		vin-supply = <&vcc5v0_sys>;
+	};
+
+	vcc_1v8: regulator-1v8-vcc {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_1v8";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		vin-supply = <&vcc_io>;
+	};
+
+	vcc_io: regulator-3v3-vcc-io {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_io";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		vin-supply = <&vcc5v0_sys>;
+	};
+
+	vcc5v0_sys: regulator-5v0-vcc-sys {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc5v0_sys";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+	};
+
+	vdd_core: regulator-vdd-core {
+		compatible = "pwm-regulator";
+		pwms = <&pwm0 0 5000 1>;
+		pwm-supply = <&vcc5v0_sys>;
+		regulator-name = "vdd_core";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <827000>;
+		regulator-max-microvolt = <1340000>;
+		regulator-settling-time-up-us = <250>;
+	};
+
+	sdio_pwrseq: sdio-pwrseq {
+		compatible = "mmc-pwrseq-simple";
+		pinctrl-names = "default";
+		pinctrl-0 = <&wifi_reg_on>;
+		reset-gpios = <&gpio0 RK_PA2 GPIO_ACTIVE_LOW>;
+	};
+};
+
+&cpu0 {
+	cpu-supply = <&vdd_core>;
+};
+
+&emmc {
+	cap-mmc-highspeed;
+	no-sd;
+	no-sdio;
+	non-removable;
+	pinctrl-names = "default";
+	pinctrl-0 = <&emmc_bus8 &emmc_clk &emmc_cmd &emmc_pwren>;
+	vmmc-supply = <&vcc_io>;
+	status = "okay";
+};
+
+&gmac {
+	clock_in_out = "output";
+	phy-handle = <&rtl8201f>;
+	phy-supply = <&vcc_io>;
+	status = "okay";
+
+	mdio {
+		compatible = "snps,dwmac-mdio";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		rtl8201f: ethernet-phy@1 {
+			compatible = "ethernet-phy-ieee802.3-c22";
+			reg = <1>;
+			pinctrl-names = "default";
+			pinctrl-0 = <&mac_rst>;
+			reset-assert-us = <20000>;
+			reset-deassert-us = <50000>;
+			reset-gpios = <&gpio0 RK_PA7 GPIO_ACTIVE_LOW>;
+		};
+	};
+};
+
+&io_domains {
+	vccio0-supply = <&vcc_io>;
+	vccio1-supply = <&vcc_io>;
+	vccio2-supply = <&vcc_io>;
+	vccio3-supply = <&vcc_io>;
+	vccio4-supply = <&vcc_1v8>;
+	vccio5-supply = <&vcc_io>;
+	status = "okay";
+};
+
+&pinctrl {
+	pinctrl-names = "default";
+	pinctrl-0 = <&rtc_32k>;
+
+	bluetooth {
+		bt_reg_on: bt-reg-on {
+			rockchip,pins = <4 RK_PB3 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+
+		bt_wake_host: bt-wake-host {
+			rockchip,pins = <4 RK_PB4 RK_FUNC_GPIO &pcfg_pull_down>;
+		};
+
+		host_wake_bt: host-wake-bt {
+			rockchip,pins = <4 RK_PB2 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
+	gmac {
+		mac_rst: mac-rst {
+			rockchip,pins = <0 RK_PA7 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
+	leds {
+		pwr_led: pwr-led {
+			rockchip,pins = <0 RK_PB6 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
+	wifi {
+		wifi_reg_on: wifi-reg-on {
+			rockchip,pins = <0 RK_PA2 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+
+		wifi_wake_host: wifi-wake-host {
+			rockchip,pins = <0 RK_PA0 RK_FUNC_GPIO &pcfg_pull_down>;
+		};
+	};
+};
+
+&pwm0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pwm0_pin_pull_down>;
+	status = "okay";
+};
+
+&saradc {
+	vref-supply = <&vcc_1v8>;
+	status = "okay";
+};
+
+&sdio {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	cap-sd-highspeed;
+	cap-sdio-irq;
+	keep-power-in-suspend;
+	max-frequency = <50000000>;
+	mmc-pwrseq = <&sdio_pwrseq>;
+	no-mmc;
+	no-sd;
+	non-removable;
+	vmmc-supply = <&vcc_io>;
+	vqmmc-supply = <&vcc_1v8>;
+	status = "okay";
+
+	brcmf: wifi@1 {
+		compatible = "brcm,bcm43430a1-fmac", "brcm,bcm4329-fmac";
+		reg = <1>;
+		interrupt-parent = <&gpio0>;
+		interrupts = <RK_PA0 IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-names = "host-wake";
+		pinctrl-names = "default";
+		pinctrl-0 = <&wifi_wake_host>;
+	};
+};
+
+&sdmmc {
+	cap-mmc-highspeed;
+	cap-sd-highspeed;
+	disable-wp;
+	vmmc-supply = <&vcc_io>;
+	status = "okay";
+};
+
+&u2phy {
+	status = "okay";
+};
+
+&u2phy_host {
+	status = "okay";
+};
+
+&u2phy_otg {
+	status = "okay";
+};
+
+&uart0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart0_xfer>;
+	status = "okay";
+};
+
+&uart4 {
+	uart-has-rtscts;
+	status = "okay";
+
+	bluetooth {
+		compatible = "brcm,bcm43430a1-bt";
+		clocks = <&cru SCLK_RTC32K>;
+		clock-names = "lpo";
+		interrupt-parent = <&gpio4>;
+		interrupts = <RK_PB4 IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-names = "host-wakeup";
+		device-wakeup-gpios = <&gpio4 RK_PB2 GPIO_ACTIVE_HIGH>;
+		shutdown-gpios = <&gpio4 RK_PB3 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&bt_reg_on &bt_wake_host &host_wake_bt>;
+		vbat-supply = <&vcc_io>;
+		vddio-supply = <&vcc_1v8>;
+	};
+};
+
+&usb_host_ehci {
+	status = "okay";
+};
+
+&usb_host_ohci {
+	status = "okay";
+};
+
+&usb20_otg {
+	dr_mode = "peripheral";
+	status = "okay";
+};
+
+&wdt {
+	status = "okay";
+};