Re: [PATCH 1/3] arm64: dts: qcom: hamoa-iot-evk: Describe the PCIe M.2 Key E connector

[Dmitry Baryshkov]

On Thu, Jul 09, 2026 at 12:59:40PM +0530, Wei Deng wrote:
> The hamoa IoT EVK has the PCIe M.2 Mechanical Key E connector to
> connect wireless connectivity cards over PCIe and UART interfaces.
> Hence, describe the connector node, link it with the PCIe 4 Root Port
> node and replace the static BT serdev under UART14 and the
> chip-specific wifi@0 child node with graph port/endpoints, allowing
> the pwrseq-pcie-m2 driver to power the card and dynamically create
> the BT serdev device.
> 
> The M.2 Key E connector is powered by vreg_wcn_3p3. WLAN enable is
> controlled via W_DISABLE1# (GPIO117) and BT enable via W_DISABLE2#
> (GPIO116), both described as active-low GPIOs on the connector node.
> 
> Remove the chip-specific wcn7850-pmu node as the M.2 connector
> approach replaces the WCN7850-specific power sequencing with a
> chip-agnostic one managed by the pwrseq-pcie-m2 driver.
> 
> Also add 'compatible = "pciclass,0604"' to pcie4_port0 in hamoa.dtsi
> to allow the PCI subsystem to associate the DT node with the
> PCI-to-PCI bridge device.

Separate, unrelated change?

> 
> Signed-off-by: Wei Deng <wei.deng@xxxxxxxxxxxxxxxx>
> ---
>  arch/arm64/boot/dts/qcom/hamoa-iot-evk.dts | 129 ++++++++++-------------------
>  arch/arm64/boot/dts/qcom/hamoa.dtsi        |   1 +
>  2 files changed, 47 insertions(+), 83 deletions(-)
> 

-- 
With best wishes
Dmitry