Dave Jiang wrote: > CXL spec r3.1 8.1.5.2 > By default Secondary Bus Reset (SBR) is masked for CXL ports. Introduce a > new PCI reset method "cxl_bus" to force SBR on CXL ports by setting > the unmask SBR bit in the CXL DVSEC port control register before performing > the bus reset and restore the original value of the bit post reset. The > new reset method allows the user to intentionally perform SBR on a CXL > device without needing to set the "Unmask SBR" bit via a user tool. > > Reviewed-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> > Signed-off-by: Dave Jiang <dave.jiang@xxxxxxxxx> With the locking being handled elsewhere, Reviewed-by: Dan Williams <dan.j.williams@xxxxxxxxx>
