Re: [PATCH 5/5] arm64: dts: qcom: nord-rrd: Add WCN7850 WLAN support
From: Konrad Dybcio
Date: Mon Sep 14 2026 - 06:48:49 EST
On 9/14/26 9:19 AM, Shawn Guo wrote:
> The IQ10 Robotics Reference Design carries a Hamilton (WCN7850) module on
> a board-to-board connector hanging off PCIe2, using two lanes.
>
> Unlike the Ride Embedded board, the RRD generates the module supplies
> itself rather than relying on the module DBUs: three discrete buck
> converters produce VDD_CORE_VL, VDD_CORE_VM and VDD_CORE_VH (0.95 V,
> 1.35 V and 1.95 V), all gated by WLAN0_CORE_PWR_EN on pmau0102_e GPIO6,
> while the 3.3 V and 1.8 V I/O rails are strapped to the always-on
> peripheral rails. WLAN0_EN on pmau0102_e GPIO10 releases the module
> itself.
>
> Describe those rails, the WCN7850 PMU that derives the chip supplies from
> them, and the PCIe endpoint node consuming the PMU outputs.
>
> Assisted-by: LLM
> Signed-off-by: Shawn Guo <shengchao.guo@xxxxxxxxxxxxxxxx>
> ---
Reviewed-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>
Konrad