On 27 July 2018 at 15:11, Krzysztof Kozlowski <krzk@xxxxxxxxxx> wrote: > Hi, > > On today's next, the bisect pointed commit > ff33d1030a6ca87cea9a41e1a2ea7750a781ab3d as fault for my boot failures > with NFSv4 root on Toradex Colibri VF50 (Iris carrier board). > > Author: Robin Murphy <robin.murphy@xxxxxxx> > Date: Mon Jul 23 23:16:12 2018 +0100 > OF: Don't set default coherent DMA mask > > Board: Toradex Colibri VF50 (NXP VF500, Cortex A5, serial configured > with DMA) on Iris Carrier. > > It looks like problem with Freescale Ethernet driver: > [ 15.458477] fsl-edma 40018000.dma-controller: coherent DMA mask is unset > [ 15.465284] fsl-lpuart 40027000.serial: Cannot prepare cyclic DMA > [ 15.472086] Root-NFS: no NFS server address > [ 15.476359] VFS: Unable to mount root fs via NFS, trying floppy. > [ 15.484228] VFS: Cannot open root device "nfs" or > unknown-block(2,0): error -6 > [ 15.491664] Please append a correct "root=" boot option; here are > the available partitions: > [ 15.500188] 0100 16384 ram0 > [ 15.500200] (driver?) > [ 15.506406] Kernel panic - not syncing: VFS: Unable to mount root > fs on unknown-block(2,0) > [ 15.514747] ---[ end Kernel panic - not syncing: VFS: Unable to > mount root fs on unknown-block(2,0) ]--- > > Attached - defconfig and full boot log. > > Any hints? > Let me know if you need any more information. My Exynos boards also fail to boot on missing network: https://krzk.eu/#/builders/21/builds/799/steps/10/logs/serial0 As expected there are plenty of "DMA mask not set" warnings... and later dwc3 driver fails with: dwc3: probe of 12400000.dwc3 failed with error -12 which is probably the answer why LAN attached to USB is not present. Best regards, Krzysztof -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
