Hi Lucas, On Mon, Jan 16, 2017 at 12:11:42PM +0100, Lucas Stach wrote: > The current default of 20ms cause some devices, which are slow to initialize, > to not show up during the bus scanning. Change this to the PCIe spec mandated > 100ms and document this in the DT binding. > > From PCIe base spec rev 3.0, chapter "6.6.1. Conventional Reset": > > "To allow components to perform internal initialization, system software must > wait a specified minimum period following the end of a Conventional Reset of > one or more devices before it is permitted to issue Configuration Requests to > those devices. > > With a Downstream Port that does not support Link speeds greater than > 5.0 GT/s, software must wait a minimum of 100 ms before sending a > Configuration Request to the device immediately below that Port." > > Signed-off-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx> > --- > Documentation/devicetree/bindings/pci/mvebu-pci.txt | 3 ++- > drivers/pci/host/pci-mvebu.c | 2 +- > 2 files changed, 3 insertions(+), 2 deletions(-) Acked-by: Jason Cooper <jason@xxxxxxxxxxxxxx> thx, Jason. -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
