diff --git a/XilinxProcessorIPLib/drivers/dp/src/xdptx.c b/XilinxProcessorIPLib/drivers/dp/src/xdptx.c index 0136094c..5006572b 100644 --- a/XilinxProcessorIPLib/drivers/dp/src/xdptx.c +++ b/XilinxProcessorIPLib/drivers/dp/src/xdptx.c @@ -118,7 +118,7 @@ typedef struct { static u32 XDptx_RunTraining(XDptx *InstancePtr); static XDptx_TrainingState XDptx_TrainingStateClockRecovery(XDptx *InstancePtr); static XDptx_TrainingState XDptx_TrainingStateChannelEqualization( - XDptx *InstancePtr, u32 MaxIterations); + XDptx *InstancePtr); static XDptx_TrainingState XDptx_TrainingStateAdjustLinkRate( XDptx *InstancePtr); static XDptx_TrainingState XDptx_TrainingStateAdjustLaneCount( @@ -1436,7 +1436,7 @@ static u32 XDptx_RunTraining(XDptx *InstancePtr) break; case XDPTX_TS_CHANNEL_EQUALIZATION: TrainingState = XDptx_TrainingStateChannelEqualization( - InstancePtr, 5); + InstancePtr); break; case XDPTX_TS_ADJUST_LINK_RATE: TrainingState = XDptx_TrainingStateAdjustLinkRate( @@ -1589,7 +1589,7 @@ static XDptx_TrainingState XDptx_TrainingStateClockRecovery(XDptx *InstancePtr) * 1) Transmit training pattern 2 (or 3) over the main link with symbol * scrambling disabled. * 2) The channel equalization loop. If channel equalization is - * unsuccessful after MaxIterations loop iterations, return. + * unsuccessful after 5 loop iterations, return. * 2a) Wait for at least the period of time specified in the RX device's * DisplayPort Configuration Data (DPCD) register, * TRAINING_AUX_RD_INTERVAL. @@ -1604,23 +1604,19 @@ static XDptx_TrainingState XDptx_TrainingStateClockRecovery(XDptx *InstancePtr) * section 3.5.1.2.2 of the DisplayPort 1.2a specification document. * * @param InstancePtr is a pointer to the XDptx instance. - * @param MaxIterations is the maximum number of times to loop through the - * clock recovery sequence before down-shifting to a reduced data - * rate or a reduced number of lanes. * * @return The next training state: * - XDPTX_TS_SUCCESS if training succeeded. * - XDPTX_TS_FAILURE if writing the drive settings to the RX * device was unsuccesful. - * - XDPTX_TS_ADJUST_LINK_RATE if, after MaxIterations loop - * iterations, the channel equalization sequence did not complete - * successfully. + * - XDPTX_TS_ADJUST_LINK_RATE if, after 5 loop iterations, the + * channel equalization sequence did not complete successfully. * * @note None. * *******************************************************************************/ static XDptx_TrainingState XDptx_TrainingStateChannelEqualization( - XDptx *InstancePtr, u32 MaxIterations) + XDptx *InstancePtr) { u32 Status; u32 DelayUs; @@ -1649,7 +1645,7 @@ static XDptx_TrainingState XDptx_TrainingStateChannelEqualization( return XDPTX_TS_FAILURE; } - while (IterationCount < MaxIterations) { + while (IterationCount < 5) { /* Wait delay specified in TRAINING_AUX_RD_INTERVAL. */ XDptx_WaitUs(InstancePtr, DelayUs);