On 2025-08-28 19:18, Dmitry Baryshkov wrote:
On Thu, Aug 28, 2025 at 12:48:47PM +0800, Yijie Yang wrote:
The HAMOA-IOT-EVK is an evaluation platform for IoT products, composed of
the Hamoa IoT SoM and a carrier board. Together, they form a complete
embedded system capable of booting to UART.
This change enables the following peripherals on the carrier board:
- UART
- On-board regulators
- USB Type-C mux
- Pinctrl
- Embedded USB (EUSB) repeaters
- NVMe
- pmic-glink
- USB DisplayPorts
- Bluetooth
- Graphic
- Audio
Written in collaboration with Quill Qi (Audio) <le.qi@xxxxxxxxxxxxxxxx>,
Jie Zhang (Graphics) <quic_jiezh@xxxxxxxxxxx>, Shuai Zhang (Bluetooth)
<quic_shuaz@xxxxxxxxxxx>, and Yongxing Mou (USB DisplayPorts)
<quic_yongmou@xxxxxxxxxxx>.
Signed-off-by: Yijie Yang <yijie.yang@xxxxxxxxxxxxxxxx>
---
arch/arm64/boot/dts/qcom/Makefile | 1 +
arch/arm64/boot/dts/qcom/hamoa-iot-evk.dts | 1247 ++++++++++++++++++++++++++++
2 files changed, 1248 insertions(+)
+
+ wcd938x: audio-codec {
+ compatible = "qcom,wcd9385-codec";
+
+ pinctrl-0 = <&wcd_default>;
+ pinctrl-names = "default";
+
+ reset-gpios = <&tlmm 191 GPIO_ACTIVE_LOW>;
+
+ qcom,micbias1-microvolt = <1800000>;
+ qcom,micbias2-microvolt = <1800000>;
+ qcom,micbias3-microvolt = <1800000>;
+ qcom,micbias4-microvolt = <1800000>;
+ qcom,mbhc-buttons-vthreshold-microvolt = <75000 150000 237000 500000
+ 500000 500000 500000 500000>;
Other platforms use a single line here. If you don't want to do it,
align data to start from the same column rather than restarting from the
column 1.
I will update it to a single line.
+ qcom,mbhc-headset-vthreshold-microvolt = <1700000>;
+ qcom,mbhc-headphone-vthreshold-microvolt = <50000>;
+ qcom,rx-device = <&wcd_rx>;
+ qcom,tx-device = <&wcd_tx>;
+
+ vdd-buck-supply = <&vreg_l15b_1p8>;
+ vdd-rxtx-supply = <&vreg_l15b_1p8>;
+ vdd-io-supply = <&vreg_l15b_1p8>;
+ vdd-mic-bias-supply = <&vreg_bob1>;
+
+ #sound-dai-cells = <1>;
+ };
+
+ wcn7850-pmu {
+ compatible = "qcom,wcn7850-pmu";
+
+ vdd-supply = <&vreg_wcn_0p95>;
+ vddio-supply = <&vreg_l15b_1p8>;
+ vddaon-supply = <&vreg_wcn_0p95>;
+ vdddig-supply = <&vreg_wcn_0p95>;
+ vddrfa1p2-supply = <&vreg_wcn_1p9>;
+ vddrfa1p8-supply = <&vreg_wcn_1p9>;
+
+ bt-enable-gpios = <&tlmm 116 GPIO_ACTIVE_HIGH>;
Okay, so how is WiFi controlled? Is there a GPIO? The DT should be
describing the hardware, not the UEFI behaviour.
+
+ pinctrl-0 = <&wcn_bt_en>;
+ pinctrl-names = "default";
+
--
Best Regards,
Yijie
