arm64: dts: rockchip: add DTs for Sakura Pi RK3308B

The Sakura Pi RK3308B is a SBC based on the Rockchip RK3308 SoC.

Link: https://github.com/Sakura-Pi
Link: https://docs.sakurapi.org/article/sakurapi-rk3308b/introduce
The device contains the following hardware that is tested/working:
 - 4 or 8GB eMMC
 - SDMMC card slot
 - Realtek SDIO WiFi 5/BT
 - 256 or 512MB of RAM
 - USB 2.0 port
 - OTG port

Signed-off-by: Hsun Lai <i@chainsx.cn>
Link: https://lore.kernel.org/r/20250521131108.5710-4-i@chainsx.cn
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

diff --git a/arch/arm64/boot/dts/rockchip/Makefile b/arch/arm64/boot/dts/rockchip/Makefile
index 1321f54da28ad6aefae7eccf02ad95a4ee2264d5..61f1dfcd166988b621e417337a195faf2d1f47f2 100644 (file)
--- a/arch/arm64/boot/dts/rockchip/Makefile
+++ b/arch/arm64/boot/dts/rockchip/Makefile
@@ -18,6 +18,7 @@ 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-$(CONFIG_ARCH_ROCKCHIP) += rk3308-sakurapi-rk3308b.dtb
 dtb-$(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-sakurapi-rk3308b.dts b/arch/arm64/boot/dts/rockchip/rk3308-sakurapi-rk3308b.dts
new file mode 100644 (file)
index 0000000..f9f633a
--- /dev/null
+++ b/arch/arm64/boot/dts/rockchip/rk3308-sakurapi-rk3308b.dts
@@ -0,0 +1,265 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2019 Akash Gajjar <akash@openedev.com>
+ * Copyright (c) 2019 Jagan Teki <jagan@openedev.com>
+ * Copyright (C) 2024 TheSnowfield <thesnowfield@sakurapi.org>
+ * Copyright (C) 2025 Hsun Lai <i@chainsx.cn>
+ */
+
+/dts-v1/;
+#include "rk3308.dtsi"
+#include <dt-bindings/leds/common.h>
+
+/ {
+       model = "Sakura Pi RK3308B";
+       compatible = "sakurapi,rk3308-sakurapi-rk3308b", "rockchip,rk3308";
+
+       aliases {
+               mmc0 = &emmc;
+               mmc1 = &sdmmc;
+               mmc2 = &sdio;
+       };
+
+       chosen {
+               stdout-path = "serial2:1500000n8";
+       };
+
+       vcc5v0_sys: regulator-vcc5v0-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>;
+               regulator-name = "vdd_core";
+               regulator-min-microvolt = <827000>;
+               regulator-max-microvolt = <1340000>;
+               regulator-settling-time-up-us = <250>;
+               regulator-always-on;
+               regulator-boot-on;
+               pwm-supply = <&vcc5v0_sys>;
+       };
+
+       vdd_log: regulator-vdd-log {
+               compatible = "regulator-fixed";
+               regulator-name = "vdd_log";
+               regulator-always-on;
+               regulator-boot-on;
+               regulator-min-microvolt = <1050000>;
+               regulator-max-microvolt = <1050000>;
+               vin-supply = <&vcc5v0_sys>;
+       };
+
+       vcc_ddr: regulator-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-vcc-1v8 {
+               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-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>;
+       };
+
+       vcc_phy: regulator-vcc-phy-regulator {
+               compatible = "regulator-fixed";
+               regulator-name = "vcc_phy";
+               regulator-always-on;
+               regulator-boot-on;
+       };
+
+       vcc5v0_otg: regulator-vcc5v0-otg {
+               compatible = "regulator-fixed";
+               enable-active-high;
+               gpio = <&gpio0 RK_PC5 GPIO_ACTIVE_HIGH>;
+               pinctrl-names = "default";
+               pinctrl-0 = <&otg_vbus_drv>;
+               regulator-name = "vcc5v0_otg";
+               regulator-always-on;
+               vin-supply = <&vcc5v0_sys>;
+       };
+
+       sdio_pwrseq: sdio-pwrseq {
+               compatible = "mmc-pwrseq-simple";
+               pinctrl-0 = <&wifi_enable_h>;
+               pinctrl-names = "default";
+               /*
+                * On the module itself this is one of these (depending
+                * on the actual card populated):
+                * - SDIO_RESET_L_WL_REG_ON
+                * - PDN (power down when low)
+                */
+               reset-gpios = <&gpio0 RK_PA2 GPIO_ACTIVE_LOW>;
+       };
+};
+
+&cpu0 {
+       cpu-supply = <&vdd_core>;
+};
+
+&emmc {
+       bus-width = <8>;
+       cap-mmc-highspeed;
+       non-removable;
+       status = "okay";
+};
+
+&i2c1 {
+       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_none>;
+               };
+
+               host_wake_bt: host-wake-bt {
+                       rockchip,pins = <4 RK_PB2 RK_FUNC_GPIO &pcfg_pull_none>;
+               };
+       };
+
+       sdio-pwrseq {
+               wifi_enable_h: wifi-enable-h {
+                       rockchip,pins = <0 RK_PA2 RK_FUNC_GPIO &pcfg_pull_none>;
+               };
+       };
+
+       usb {
+               otg_vbus_drv: otg-vbus-drv {
+                       rockchip,pins = <0 RK_PC5 RK_FUNC_GPIO &pcfg_pull_none>;
+               };
+       };
+
+       wifi {
+               wifi_host_wake: wifi-host-wake {
+                       rockchip,pins = <0 RK_PA0 RK_FUNC_GPIO &pcfg_pull_down>;
+               };
+       };
+};
+
+&pwm0 {
+       status = "okay";
+       pinctrl-0 = <&pwm0_pin_pull_down>;
+};
+
+&pwm3 {
+       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;
+       mmc-pwrseq = <&sdio_pwrseq>;
+       non-removable;
+       no-mmc;
+       no-sd;
+       status = "okay";
+
+       brcmf: wifi@1 {
+               compatible = "brcm,bcm43455-fmac", "brcm,bcm4329-fmac";
+               reg = <1>;
+               interrupt-parent = <&gpio0>;
+               interrupts = <RK_PA3 GPIO_ACTIVE_HIGH>;
+               interrupt-names = "host-wake";
+               pinctrl-names = "default";
+               pinctrl-0 = <&wifi_host_wake>;
+       };
+};
+
+&sdmmc {
+       cap-mmc-highspeed;
+       cap-sd-highspeed;
+       disable-wp;
+       pinctrl-0 = <&sdmmc_clk &sdmmc_cmd &sdmmc_det &sdmmc_bus4>;
+       card-detect-delay = <800>;
+       status = "okay";
+};
+
+&uart2 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&uart2m0_xfer>;
+       status = "okay";
+};
+
+&uart4 {
+       pinctrl-names = "default";
+       uart-has-rtscts;
+       status = "okay";
+
+       bluetooth {
+               compatible = "brcm,bcm4345c5";
+               clocks = <&cru SCLK_RTC32K>;
+               clock-names = "lpo";
+               pinctrl-names = "default";
+               pinctrl-0 = <&host_wake_bt &bt_wake_host &bt_reg_on>;
+               device-wakeup-gpios = <&gpio4 RK_PB4 GPIO_ACTIVE_HIGH>;
+               host-wakeup-gpios = <&gpio4 RK_PB2 GPIO_ACTIVE_HIGH>;
+               shutdown-gpios = <&gpio4 RK_PB3 GPIO_ACTIVE_HIGH>;
+               max-speed = <1500000>;
+       };
+};
+
+&u2phy {
+       status = "okay";
+};
+
+&u2phy_otg {
+       status = "okay";
+};
+
+&u2phy_host {
+       status = "okay";
+};
+
+&usb20_otg {
+       dr_mode = "peripheral";
+       status = "okay";
+};
+
+&usb_host_ehci {
+       status = "okay";
+};
+
+&usb_host_ohci{
+       status = "okay";
+};