Re: [PATCH v2] arm64: dts: qcom: qcs6490-rb3gen2: Enable uPD720201 and GL3590

[Konrad Dybcio]

On 3/24/26 3:32 AM, Bjorn Andersson wrote:
> The QCS6490 Rb3Gen2 has a Renesas μPD720201 XHCI controller hanging off
> the TC9563 PCIe switch, on this a Genesys Logic GL3590 USB hub provides
> two USB Type-A ports and an ASIX AX88179 USB 3.0 Gigabit Ethernet
> interface.
> 
> The Renesas chip is powered by two regulators controlled through PM7250B
> GPIOs 1 and 4, and the power/reset pin is pulled down by PM8350C GPIO 4.
> The Genesys chip power is always-on, but the reset pin is controlled
> through TLMM GPIO 162.
> 
> Describe the Renesas chip on the PCIe bus, with supplies and reset, to
> allow it to be brought out of reset and discovered. Then describe the
> two peers of the USB hub, with its reset GPIO, to allow this to be
> brought out of reset.
> 
> The USB Type-A connectors are not described, as they are in no regard
> controlled by the operating system.
> 
> Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxxxxxxxx>
> ---
> Dependencies has now landed, so this provides USB Type-A and Ethernet
> support (when renesas_usb_fw.mem) is present.
> 
> Missing from the RFC/v1 description was the mentioning that unless I
> pass "pcie_aspm=off" to the kernel, the Renesas controller fails with:
> 
>   xhci-pci-renesas 0001:04:00.0: Abort failed to stop command ring: -110

+Mani another quirky piece of hw, perhaps?
Maybe +Krishna has the datasheet. does the it talk about ASPM?

Konrad