[PATCH 0/3] arm64: dts: rockchip: Enable RTC, WiFi and Bluetooth on RK3576 EVB1

[PATCH 0/3] arm64: dts: rockchip: Enable RTC, WiFi and Bluetooth on RK3576 EVB1

[Alexey Charkov]

Rockchip RK3576 EVB1 boards follow the usual Rockchip design pattern
with the I2C connected RTC chip feeding a 32 kHz LPO clock to the
onboard Ampak AP6275P combo WiFi/BT module. In this case the WiFi
part is connected by a PCIe link and BT over UART.

Add required DT nodes to enable them.

The board also has a connector for an external WiFi/BT module, which
is out of scope for this series. There is also a PCM connection from
SAI2 M0 to the Bluetooth module, which is also left out for now.

Signed-off-by: Alexey Charkov <alchark@gmail.com>
---
Alexey Charkov (3):
      arm64: dts: rockchip: Add RTC on rk3576-evb1-v10
      arm64: dts: rockchip: Add WiFi on rk3576-evb1-v10
      arm64: dts: rockchip: Add Bluetooth on rk3576-evb1-v10

 arch/arm64/boot/dts/rockchip/rk3576-evb1-v10.dts | 115 +++++++++++++++++++++++
 1 file changed, 115 insertions(+)
---
base-commit: 8f5ae30d69d7543eee0d70083daf4de8fe15d585
change-id: 20250806-evb1-rtcwifibt-a341507658d5

Best regards,
-- 
Alexey Charkov <alchark@gmail.com>

[PATCH 1/3] arm64: dts: rockchip: Add RTC on rk3576-evb1-v10

[Alexey Charkov]

Add the I2C connected RTC chip to the Rockchip RK3576 EVB1 board.

Apart from the realtime clock functionality, it also provides a 32 kHz
clock source for the onboard WiFi chip.

Tested-by: Pavel Zhovner <pavel@flipperdevices.com>
Signed-off-by: Alexey Charkov <alchark@gmail.com>
---
 arch/arm64/boot/dts/rockchip/rk3576-evb1-v10.dts | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3576-evb1-v10.dts b/arch/arm64/boot/dts/rockchip/rk3576-evb1-v10.dts
index 56527c56830e3fd81855652f7bcc31215c771c0a..bfefd37a1ab8c67a17aba0cdb80980102d66bb76 100644
--- a/arch/arm64/boot/dts/rockchip/rk3576-evb1-v10.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3576-evb1-v10.dts
@@ -680,6 +680,22 @@ regulator-state-mem {
 	};
 };
 
+&i2c2 {
+	status = "okay";
+
+	hym8563: rtc@51 {
+		compatible = "haoyu,hym8563";
+		reg = <0x51>;
+		clock-output-names = "hym8563";
+		interrupt-parent = <&gpio0>;
+		interrupts = <RK_PA0 IRQ_TYPE_LEVEL_LOW>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&rtc_int>;
+		wakeup-source;
+		#clock-cells = <0>;
+	};
+};
+
 &mdio0 {
 	rgmii_phy0: phy@1 {
 		compatible = "ethernet-phy-ieee802.3-c22";
@@ -708,6 +724,12 @@ &pcie1 {
 };
 
 &pinctrl {
+	hym8563 {
+		rtc_int: rtc-int {
+			rockchip,pins = <0 RK_PA0 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+	};
+
 	usb {
 		usb_host_pwren: usb-host-pwren {
 			rockchip,pins = <0 RK_PC7 RK_FUNC_GPIO &pcfg_pull_none>;

-- 
2.49.1

[PATCH 2/3] arm64: dts: rockchip: Add WiFi on rk3576-evb1-v10

[Alexey Charkov]

Add device tree nodes to enable the onboard Ampak AP6275P WiFi chip
connected over a PCIe link on Rockchip RK3576 EVB1.

It takes an external 32 kHz clock from the RTC chip and requires the
WIFI_REG_ON signal to be enabled before the bus is enumerated to
initialize properly.

Tested-by: Pavel Zhovner <pavel@flipperdevices.com>
Signed-off-by: Alexey Charkov <alchark@gmail.com>
---
 arch/arm64/boot/dts/rockchip/rk3576-evb1-v10.dts | 58 ++++++++++++++++++++++++
 1 file changed, 58 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3576-evb1-v10.dts b/arch/arm64/boot/dts/rockchip/rk3576-evb1-v10.dts
index bfefd37a1ab8c67a17aba0cdb80980102d66bb76..100ca2e23c6093ae517d741fcd047e2a8172f457 100644
--- a/arch/arm64/boot/dts/rockchip/rk3576-evb1-v10.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3576-evb1-v10.dts
@@ -232,6 +232,20 @@ vcc_ufs_s0: regulator-vcc-ufs-s0 {
 		regulator-max-microvolt = <3300000>;
 		vin-supply = <&vcc_sys>;
 	};
+
+	vcc_wifi_reg_on: regulator-wifi-reg-on {
+		compatible = "regulator-fixed";
+		enable-active-high;
+		gpios = <&gpio1 RK_PC6 GPIO_ACTIVE_HIGH>;
+		pinctrl-0 = <&wifi_reg_on>;
+		pinctrl-names = "default";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-name = "wifi_reg_on";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		vin-supply = <&vcc_1v8_s3>;
+	};
 };
 
 &cpu_l0 {
@@ -242,6 +256,10 @@ &cpu_b0 {
 	cpu-supply = <&vdd_cpu_big_s0>;
 };
 
+&combphy0_ps {
+	status = "okay";
+};
+
 &combphy1_psu {
 	status = "okay";
 };
@@ -712,6 +730,30 @@ rgmii_phy1: phy@1 {
 	};
 };
 
+&pcie0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie0_rst>;
+	reset-gpios = <&gpio2 RK_PB4 GPIO_ACTIVE_HIGH>;
+	vpcie3v3-supply = <&vcc_3v3_s3>;
+	status = "okay";
+
+	pcie@0,0 {
+		reg = <0x0 0 0 0 0>;
+		#address-cells = <3>;
+		#size-cells = <2>;
+		bus-range = <0x0 0xf>;
+		device_type = "pci";
+		ranges;
+
+		wifi: wifi@0,0 {
+			compatible = "pci14e4,449d";
+			reg = <0x10000 0 0 0 0>;
+			clocks = <&hym8563>;
+			clock-names = "lpo";
+		};
+	};
+};
+
 &pcie1 {
 	reset-gpios = <&gpio4 RK_PC4 GPIO_ACTIVE_HIGH>;
 	vpcie3v3-supply = <&vcc3v3_pcie1>;
@@ -730,6 +772,12 @@ rtc_int: rtc-int {
 		};
 	};
 
+	pcie0 {
+		pcie0_rst: pcie0-rst {
+			rockchip,pins = <2 RK_PB4 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
 	usb {
 		usb_host_pwren: usb-host-pwren {
 			rockchip,pins = <0 RK_PC7 RK_FUNC_GPIO &pcfg_pull_none>;
@@ -743,6 +791,16 @@ usbc0_int: usbc0-int {
 			rockchip,pins = <0 RK_PA5 RK_FUNC_GPIO &pcfg_pull_up>;
 		};
 	};
+
+	wifi {
+		wifi_reg_on: wifi-reg-on {
+			rockchip,pins = <1 RK_PC6 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+
+		wifi_wake_host: wifi-wake-host {
+			rockchip,pins = <0 RK_PB0 RK_FUNC_GPIO &pcfg_pull_down>;
+		};
+	};
 };
 
 &sdmmc {

-- 
2.49.1

[PATCH 3/3] arm64: dts: rockchip: Add Bluetooth on rk3576-evb1-v10

[Alexey Charkov]

Add device tree nodes to enable Bluetooth in the Ampak AP6275P module
found on Rockchip RK3576 EVB1 and connected over a UART link.

Note that this doesn't enable the out-of-band PCM connection. It's
routed to SAI2 M0 pins in case anyone wishes to add it.

Tested-by: Pavel Zhovner <pavel@flipperdevices.com>
Signed-off-by: Alexey Charkov <alchark@gmail.com>
---
 arch/arm64/boot/dts/rockchip/rk3576-evb1-v10.dts | 35 ++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3576-evb1-v10.dts b/arch/arm64/boot/dts/rockchip/rk3576-evb1-v10.dts
index 100ca2e23c6093ae517d741fcd047e2a8172f457..d3e70a646fbe1e99cb007e7d9f09da33beedc842 100644
--- a/arch/arm64/boot/dts/rockchip/rk3576-evb1-v10.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3576-evb1-v10.dts
@@ -766,6 +766,20 @@ &pcie1 {
 };
 
 &pinctrl {
+	bluetooth {
+		bt_reg_on: bt-reg-on {
+			rockchip,pins = <1 RK_PC7 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+
+		bt_wake_host: bt-wake-host {
+			rockchip,pins = <0 RK_PB1 RK_FUNC_GPIO &pcfg_pull_down>;
+		};
+
+		host_wake_bt: host-wake-bt {
+			rockchip,pins = <1 RK_PD4 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+	};
+
 	hym8563 {
 		rtc_int: rtc-int {
 			rockchip,pins = <0 RK_PA0 RK_FUNC_GPIO &pcfg_pull_up>;
@@ -843,6 +857,27 @@ &uart0 {
 	status = "okay";
 };
 
+&uart4 {
+	pinctrl-0 = <&uart4m1_xfer &uart4m1_ctsn &uart4m1_rtsn>;
+	pinctrl-names = "default";
+	uart-has-rtscts;
+	status = "okay";
+
+	bluetooth {
+		compatible = "brcm,bcm43438-bt";
+		clocks = <&hym8563>;
+		clock-names = "lpo";
+		device-wakeup-gpios = <&gpio1 RK_PD4 GPIO_ACTIVE_HIGH>;
+		interrupt-parent = <&gpio0>;
+		interrupts = <RK_PB1 IRQ_TYPE_LEVEL_HIGH>;
+		pinctrl-0 = <&bt_reg_on &bt_wake_host &host_wake_bt>;
+		pinctrl-names = "default";
+		shutdown-gpios = <&gpio1 RK_PC7 GPIO_ACTIVE_HIGH>;
+		vbat-supply = <&vcc_3v3_s3>;
+		vddio-supply = <&vcc_1v8_s3>;
+	};
+};
+
 &ufshc {
 	status = "okay";
 };

-- 
2.49.1

Re: [PATCH 0/3] arm64: dts: rockchip: Enable RTC, WiFi and Bluetooth on RK3576 EVB1

[Heiko Stuebner]

On Wed, 13 Aug 2025 00:30:22 +0400, Alexey Charkov wrote:
> Rockchip RK3576 EVB1 boards follow the usual Rockchip design pattern
> with the I2C connected RTC chip feeding a 32 kHz LPO clock to the
> onboard Ampak AP6275P combo WiFi/BT module. In this case the WiFi
> part is connected by a PCIe link and BT over UART.
> 
> Add required DT nodes to enable them.
> 
> [...]

Applied, thanks!

[1/3] arm64: dts: rockchip: Add RTC on rk3576-evb1-v10
      commit: 0adaae77862932a19cc14c086d7fd15ec0ef7703
[2/3] arm64: dts: rockchip: Add WiFi on rk3576-evb1-v10
      commit: ebf8183ad08afc4fcabe1379a5098354829d950d
[3/3] arm64: dts: rockchip: Add Bluetooth on rk3576-evb1-v10
      commit: 34f7620912bb0f881a23dfea529e69fd2e8fdcf2

Best regards,
-- 
Heiko Stuebner <heiko@sntech.de>