On Wed, Aug 20, 2025 at 10:03 AM Vasanthakumar Thiagarajan <quic_vthiagar@xxxxxxxxxxx> wrote: > > > > On 8/19/2025 2:20 PM, Balsam Chihi wrote: > > Hello, > > I Have a question on the same subject but not related to the bug. > > I have many identical PCIe WiFi cards on the system and I need to load > > a different board-2.bin on each one (1 adapter per frequency band). > > So you are using multiple pcie devices at the same time in a system > with ath11k? Wondering if you are using any private patches to address > QRTR instance id clash issue [1][2]. > I'm not aware of any issue of QRTR instance id clash. > > Is there any kernel built-in solution for that? > > I could not find any, so I had to create a patch that loads a > > different board-2.bin for each card based on the pci device address. > > Current board data selection for QCN from board-2.bin is based on pci+chip-id+board-id > combination, not based on pci device address. You can find the chip-id and board-id in the > debug during QMI boot stage. Then you can use ath11k-bdencoder [3] to encode those > board data binaries into board-2.bin. This way you can package all the needed board > specific binaries for a hardware into a single board-2.bin. Ath11k board data file > load logic uses chip-id and board-id to download the right board data for the given > hardware variant. I have multiple PCIe WiFi adapters based on QCN9074 from different manufacturers. The problem is that I could not distinguish between them at the system level. All have 0xFF as board ID. So, when loading the default board-2.bin they behave the same way. When I contacted the manufacturers they sent me board-2.bin for each configuration : 2x2, 4x4, 2.4Ghz, 5GHz... (maybe calibration data and more?) The default board-2.bin for board ID 0xFF does not support all bands. My requirement is to have 2.4Ghz band on slot 1 and 5Ghz band on slot 2. So the patch reads from rootfs a text file named with the pci device address, the path to the custom board-2.bin. P.S. : qca-swiss-army-knife did not succeed in decoding the custom board-2.bin files. Best regards, Balsam > > Vasanth > > [1] https://patchwork.kernel.org/project/linux-wireless/list/?series=692423&state=*&order=date > [2] https://lore.kernel.org/all/20230111170033.32454-1-kvalo@xxxxxxxxxx/ > [3] > https://github.com/qca/qca-swiss-army-knife/blob/master/tools/scripts/ath11k/ath11k-bdencoder
