On Sun, Aug 24, 2014 at 12:07:27AM +0530, Suman Tripathi wrote: > This patch addresses two HW erratas as described below by retrying the > COMRESET: > > 1. During speed negotiation, controller is not able to detect ALIGN > at GEN3(6Gbps) within 54.6us and results in a timeout. This issue can > be recovered by issuing a COMRESET. > > 2. Although ALIGN detection is successful, 8b/10b and disparity bit > errors can occur which result in the signature FIS not received > successfully by the Host controller. Due to this, the PHY communication > between the host and drive is not established because of CDR(clock and > data recovery) circuit doesn't lock. This issue can be recoverd by issuing > a COMRESET. > > The above retries are issued only if the port status register PXSTATUS > reports device presence detected but PHY communication not established. > The maximum retry attempts are 3.
Didn't I ask you to update the comment to explain what's going on? Or is the existing comment already sufficient? Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
