linux-kernel - Re: [PATCH RFC] arm64: dts: qcom: qcs6490-rb3gen2: power on onboard uPD720201 controller

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Message-ID: <1fcb607d-f3dc-4dcb-b640-452eae750952@oss.qualcomm.com>
Date: Tue, 13 Jan 2026 16:00:02 +0100
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH RFC] arm64: dts: qcom: qcs6490-rb3gen2: power on onboard
 uPD720201 controller

On 1/9/26 4:30 PM, Dmitry Baryshkov wrote:
> One of ports of the TC9563 bridge is connected to the PCIe Renesas host
> controller. Specify the voltage regulator, powering on the USB host
> controller.
> 
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
> ---
> Note, with these changes I can't get the onboard hub / ASIX controller
> to work. Most likely those need to be powered on separately, but my
> quick attempts to do it failed up to now.
> ---

I assume it's connected to the switch?

Does it show up on the bus? What if if you rescan the bus manually?

Konrad