On 20 January 2016 at 07:53, Rafał Miłecki <zajec5@xxxxxxxxx> wrote: > In OpenWrt trunk code we use iProc driver for PCIe controllers on bcma > bus (PCIE_IPROC_BCMA). Right now we use 4.1 kernel but we backported > all iProc changes. Unfortunately backporting set queued for 4.5 broke > bus scanning on some routers. > > Most BCM4708 / BCM4709 chipsets have 3 PCIe controllers. All known > routers use only first 2 of them. Even if router has 3 PCIe cards, the > last two cards are connected to the 2nd PCIe controller. > > So that PAXC patch broke support for routers with 3 cards, 2 of them > at the 2nd controller. It doesn't affect routers with just 2 cards. > This problem was tracked down in: > https://dev.openwrt.org/ticket/21393 > > I'm attaching two OpenWrt boot logs. > 1) r48381 > It contains all backported iProc changes. The log looks "nice", but > only one card (0000:01:00.0) was detected. > 2) r48382 > It contains "Revert "PCI: iproc: Add PAXC interface support"" patch. > It contains many "[Firmware Bug]: reg 0x??: invalid BAR (can't size)" > messages but there are all 3 cards detected: 0000:01:00.0, > 0001:03:00.0 and 0001:04:00.0 (see brcmfmac messages). > > Can you take a look at this problem, please? linux-arm-kernel@ stopped my e-mail due to its size. Sending compressed attachments. -- Rafał
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