[PATCH v2 4/4] arm64: dts: rockchip: add overlay for the WiFi/BT module on Sige5 v1.2

Alexey Charkov
2025-06-14T18:26:22Z

Add support for the Broadcom based WiFi/Bluetooth module (BW3752-50B1)
found in ArmSoM Sige5 boards version 1.2. This includes SDIO connected
WiFi with OOB interrupt support, as well as UART connected Bluetooth
with its respective interrupts.

PCM support for Bluetooth SCO audio is left out for now. It is connected
to SAI2 in M0 pin mode in case someone needs to enable it.

Note that v1.1 boards used a Realtek based module which is incompatible
with these DT nodes, so v1.1 would need a different overlay.

Signed-off-by: Alexey Charkov <alchark@gmail.com>
---
arch/arm64/boot/dts/rockchip/Makefile | 5 +++
.../rockchip/rk3576-armsom-sige5-v1.2-wifibt.dtso | 49 ++++++++++++++++++++++
2 files changed, 54 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/Makefile b/arch/arm64/boot/dts/rockchip/Makefile
index 4bf84622db473696f64b157ba94560f476d4f52f..26533be1dd865972b681d133aad6fbbbf4e64bce 100644
--- a/arch/arm64/boot/dts/rockchip/Makefile
+++ b/arch/arm64/boot/dts/rockchip/Makefile
@@ -143,6 +143,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3568-wolfvision-pf5.dtb
dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3568-wolfvision-pf5-display-vz.dtbo
dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3568-wolfvision-pf5-io-expander.dtbo
dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3576-armsom-sige5.dtb
+dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3576-armsom-sige5-v1.2-wifibt.dtbo
dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3576-evb1-v10.dtb
dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3576-roc-pc.dtb
dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3576-rock-4d.dtb
@@ -225,6 +226,10 @@ rk3568-wolfvision-pf5-vz-2-uhd-dtbs := rk3568-wolfvision-pf5.dtb \
rk3568-wolfvision-pf5-display-vz.dtbo \
rk3568-wolfvision-pf5-io-expander.dtbo

+dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3576-armsom-sige5-v1.2-wifibt.dtb
+rk3576-armsom-sige5-v1.2-wifibt-dtbs := rk3576-armsom-sige5.dtb \
+ rk3576-armsom-sige5-v1.2-wifibt.dtbo
+
dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-edgeble-neu6a-wifi.dtb
rk3588-edgeble-neu6a-wifi-dtbs := rk3588-edgeble-neu6a-io.dtb \
rk3588-edgeble-neu6a-wifi.dtbo
diff --git a/arch/arm64/boot/dts/rockchip/rk3576-armsom-sige5-v1.2-wifibt.dtso b/arch/arm64/boot/dts/rockchip/rk3576-armsom-sige5-v1.2-wifibt.dtso
new file mode 100644
index 0000000000000000000000000000000000000000..6985c3b22ebe4efcc7e7b7370f527838a557cf2b
--- /dev/null
+++ b/arch/arm64/boot/dts/rockchip/rk3576-armsom-sige5-v1.2-wifibt.dtso
@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * DT-overlay to enable the onboard WiFi and Bluetooth module present in v1.2
+ * boards. Note that v1.1 boards use a different module, so this probably won't
+ * work there.
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/pinctrl/rockchip.h>
+
+&sdio {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ wifi@1 {
+ compatible = "brcm,bcm4329-fmac";
+ reg = <1>;
+ clock-names = "lpo";
+ clocks = <&hym8563>;
+ interrupt-names = "host-wake";
+ interrupt-parent = <&gpio0>;
+ interrupts = <RK_PB0 IRQ_TYPE_LEVEL_HIGH>;
+ pinctrl-0 = <&wifi_wake_host>;
+ pinctrl-names = "default";
+ };
+};
+
+&uart4 {
+ status = "okay";
+
+ bluetooth {
+ compatible = "brcm,bcm43438-bt";
+ clock-names = "lpo";
+ clocks = <&hym8563>;
+ device-wakeup-gpios = <&gpio1 RK_PD7 GPIO_ACTIVE_HIGH>;
+ interrupt-names = "host-wakeup";
+ 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 = <&gpio0 RK_PC6 GPIO_ACTIVE_HIGH>;
+ vbat-supply = <&vcc_3v3_s3>;
+ vddio-supply = <&vcc_1v8_s3>;
+ };
+};

--
2.49.0