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dp: rx: Added core initialization.

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Signed-off-by: Andrei-Liviu Simion <andrei.simion@xilinx.com>
This commit is contained in:
Andrei-Liviu Simion 2015-01-15 17:36:34 -08:00 • committed by Nava kishore Manne
parent 6ba1a4e305
commit ccfd95487f
2 changed files with 70 additions and 0 deletions
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69
XilinxProcessorIPLib/drivers/dp/src/xdprx.c
View file

@ -62,6 +62,75 @@ static u32 XDprx_WaitPhyReady(XDprx *InstancePtr, u8 Mask);
/**************************** Function Definitions ****************************/ /**************************** Function Definitions ****************************/
/******************************************************************************/
/**
* This function prepares the DisplayPort RX core for use.
*
* @param InstancePtr is a pointer to the XDprx instance.
*
* @return
* - XST_SUCCESS if the DisplayPort RX core was successfully
* initialized.
* - XST_FAILURE otherwise.
*
* @note None.
*
*******************************************************************************/
u32 XDprx_InitializeRx(XDprx *InstancePtr)
{
u32 Status;
/* Disable the main link. */
XDprx_WriteReg(InstancePtr->Config.BaseAddr, XDPRX_LINK_ENABLE, 0x00);
/* Set the AUX clock divider. */
XDprx_WriteReg(InstancePtr->Config.BaseAddr, XDPRX_AUX_CLK_DIVIDER,
(InstancePtr->Config.SAxiClkHz / 1000000));
/* Put both GT RX/TX and CPLL into reset. */
XDprx_WriteReg(InstancePtr->Config.BaseAddr, XDPRX_PHY_CONFIG, 0x03);
/* Release CPLL reset. */
XDprx_WriteReg(InstancePtr->Config.BaseAddr, XDPRX_PHY_CONFIG, 0x02);
/* Wait until all lane CPLLs have locked. */
XDprx_WaitPhyReady(InstancePtr, 0x30);
/* Remove the reset from the PHY. */
XDprx_WriteReg(InstancePtr->Config.BaseAddr, XDPRX_PHY_CONFIG, 0x00);
/* Wait until the PHY has completed the reset cycle. */
Status = XDprx_WaitPhyReady(InstancePtr, 0xFF);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
/* Enable the RX core. */
XDprx_WriteReg(InstancePtr->Config.BaseAddr, XDPRX_LINK_ENABLE, 0x01);
/* Set other user parameters. */
XDprx_WriteReg(InstancePtr->Config.BaseAddr, XDPRX_MIN_VOLTAGE_SWING,
0x01);
XDprx_WriteReg(InstancePtr->Config.BaseAddr, XDPRX_SINK_COUNT, 0x01);
/* Set the AUX training interval. */
XDprx_WriteReg(InstancePtr->Config.BaseAddr, XDPRX_OVER_CTRL_DPCD,
0x01);
XDprx_WriteReg(InstancePtr->Config.BaseAddr, XDPRX_OVER_TP_SET, 0x0200);
XDprx_WriteReg(InstancePtr->Config.BaseAddr, XDPRX_OVER_CTRL_DPCD,
0x00);
/* Set the link configuration.*/
XDprx_SetLinkRate(InstancePtr, InstancePtr->LinkConfig.LinkRate);
XDprx_SetLaneCount(InstancePtr, InstancePtr->LinkConfig.LaneCount);
/* Set the interrupt masks. */
XDprx_WriteReg(InstancePtr->Config.BaseAddr, XDPRX_INTERRUPT_MASK,
~XDPRX_INTERRUPT_MASK_ALL);
/* Enable the display timing generator. */
XDprx_DtgEn(InstancePtr);
return XST_SUCCESS;
}
/******************************************************************************/ /******************************************************************************/
/** /**
* This function retrieves the configuration for this DisplayPort RX instance * This function retrieves the configuration for this DisplayPort RX instance

1
XilinxProcessorIPLib/drivers/dp/src/xdprx.h
View file

@ -88,6 +88,7 @@ typedef struct {
/* xdprx.c: Setup and initialization functions. */ /* xdprx.c: Setup and initialization functions. */
void XDprx_CfgInitialize(XDprx *InstancePtr, XDp_Config *ConfigPtr, void XDprx_CfgInitialize(XDprx *InstancePtr, XDp_Config *ConfigPtr,
u32 EffectiveAddr); u32 EffectiveAddr);
u32 XDprx_InitializeRx(XDprx *InstancePtr);
/* xdprx.c: General usage functions. */ /* xdprx.c: General usage functions. */
void XDprx_DtgEn(XDprx *InstancePtr); void XDprx_DtgEn(XDprx *InstancePtr);