On Tue, Oct 20, 2009 at 07:29, <[email protected]> wrote: > Revision 7683 Author hennerich Date 2009-10-20 08:29:01 -0400 (Tue, 20 Oct > 2009) > > Log Message > > [#5630] ethernet driver smc91x fail to wake up by uart in bf533-stamp > On the BF533-STAMP board there is some external logic that switches the > Asynchronous Memory Bank 3 between Flash and SMSC91c111 Ethernet > controller. This logic is controlled by GPIO_PF0 which is also the same > PIN as SPI-SPISS Slave Mode Select. The SPI driver defaults the SPI > Control register to Slave Mode - but doesn't enable the SPI. In case the > SPI bus driver wasn't utilized and is then suspended and resumed during > the PM state transitions - the SPI resume code enables the SPI - and > this will case the SPI-SPISS = GPIO_PF0 being driven low. In return this > causes the Flash being enabled and the smc91x Ethernet driver accesses > Flash instead of the Ethernet controller.
shouldnt we also fix the bug that the SPI driver always enables itself when resuming ? cant we check like drv_data->workqueue to see if any work is pending ? -mike _______________________________________________ Linux-kernel-commits mailing list [email protected] https://blackfin.uclinux.org/mailman/listinfo/linux-kernel-commits
