Re: [PATCH v2] arm64: dts: qcom: hamoa-iot-evk: switch typec0 to PS8830 retimer
Konrad Dybcio <[email protected]>
| Newsgroups | org.kernel.vger.linux-arm-msm,org.kernel.vger.linux-devicetree,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <[email protected]> |
On 8/3/26 3:27 PM, Xin Liu wrote:
> The Hamoa IoT EVK hardware design uses a Parade PS8830 retimer on
> I2C3 for USB Type-C port 0. Describe the retimer and route typec0
> through it to enable USB 3.0 SuperSpeed and DisplayPort Alt Mode.
>
> Supply the PS8830 from the existing vreg_rtmr0_* rails and remove
> their stale "Left unused" annotation.
>
> The FSUSB42 SBU mux chip is present on the PCB but with all signal
> lines unconnected (NC), so remove the fsusb42 node and its pinctrl
> group.
[...]
> +&i2c3 {
> + clock-frequency = <400000>;
> + status = "okay";
> +
> + typec-mux@8 {
> + compatible = "parade,ps8830";
> + reg = <0x08>;
> +
> + clocks = <&rpmhcc RPMH_RF_CLK4>;
On other boards, the port0 retimer normally takes RF_CLK3 - have
you verified this bit?
Konrad