Re: [PATCH] bus: mhi: host: pci_generic: Add Qualcomm SDX35 modem

Manivannan Sadhasivam <[email protected]> Mon, 2 Mar 2026 12:57:57 +0530

Newsgroups	dev.linux.lists.mhi,org.kernel.vger.linux-arm-msm,org.kernel.vger.linux-kernel
Message-ID	<wtybwmfau4ldtnbh5qr3eady2zn5ryac7w4ad4cjfg5jy5eyde@wfzkzgeoxftk>

On Fri, Jan 23, 2026 at 12:58:45PM +0100, Konrad Dybcio wrote:
> On 1/23/26 12:46 PM, Krishna Chaitanya Chundru wrote:
> > Add support for sdx35 modem. Similar to SDX75, SDX35 can take longer to
> > transition to ready during power up, so use modem_qcom_v2_mhiv_config
> > configurations.
> > 
> > 01:00.0 Unassigned class [ff00]: Qualcomm Device 011a
>           ^ this looks like a separate bug to fix
> 
> see e.g. qcom_fixup_class in drivers/pci/controller/dwc/pcie-qcom.c
> 

Controller specific fixups are only for Root Ports. But this 'Unassigned class'
is for the endpoint device and is a common pattern among the Qcom modems not
setting the proper class.

I've sent a patch adding quirk for some known devices:
https://lore.kernel.org/linux-pci/[email protected]

- Mani

> Konrad

-- 
மணிவண்ணன் சதாசிவம்