Manivannan Sadhasivam <mani@xxxxxxxxxx> writes: > On Sat, Nov 05, 2022 at 08:49:43PM +0100, Robert Marko wrote: >> Currently, trying to use AHB + PCI/MHI cards or multiple PCI/MHI cards >> will cause a clash in the QRTR instance node ID and prevent the driver >> from talking via QMI to the card and thus initializing it with: >> [ 9.836329] ath11k c000000.wifi: host capability request failed: 1 90 >> [ 9.842047] ath11k c000000.wifi: failed to send qmi host cap: -22 >> > > There is still an outstanding issue where you cannot connect two WLAN modules > with same node id. > >> So, in order to allow for this combination of cards, especially AHB + PCI >> cards like IPQ8074 + QCN9074 (Used by me and tested on) set the desired >> QRTR instance ID offset by calculating a unique one based on PCI domain >> and bus ID-s and writing it to bits 7-0 of BHI_ERRDBG2 MHI register by >> using the SBL state callback that is added as part of the series. >> We also have to make sure that new QRTR offset is added on top of the >> default QRTR instance ID-s that are currently used in the driver. >> > > Register BHI_ERRDBG2 is listed as Read only from Host as per the BHI spec. > So I'm not sure if this solution is going to work on all ath11k supported > chipsets. > > Kalle, can you confirm? I can't look at this in detail right now, but hopefully in few days. I'll get back to you. -- https://patchwork.kernel.org/project/linux-wireless/list/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
