On 08/07/2017 11:56 PM, Xiaowei Bao wrote: > Hi York, > > I will pay attention to the case of the case in commit message. > > This patch is for some special reset times for longer pcie devices, in this > case, the pcie device may on polling compliance state, the RC considers the > pcie device is link up, but the pcie device is not link up, only the L0 state > is link up state. So add the link up status judgement mechanisms. > > About 100ms timeout, the pcie spec does not specify the link up timeout time, > and the link up state is determined by a state machine. The state machine > implementation is relatively complex, refer to uboot of other platform pcie > link up state to determine the realization of the mechanism, we evaluated a > timeout, in detect state consider the pcie device is link down, in L0 state > consider the pcie device is link up, within 100ms in other states can be > restored to the L0 state considers the pcie device is link up .
Can you put this information to inline comment? It will help us when we read the code later. Thanks. York _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
