What:		/sys/kernel/debug/dwc_pcie_<dev>/rasdes_debug/lane_detect
Date:		February 2025
Contact:	Shradha Todi <shradha.t@samsung.com>
Description:	(RW) Write the lane number to be checked for detection.	Read
		will return whether PHY indicates receiver detection on the
		selected lane. The default selected lane is Lane0.

What:		/sys/kernel/debug/dwc_pcie_<dev>/rasdes_debug/rx_valid
Date:		February 2025
Contact:	Shradha Todi <shradha.t@samsung.com>
Description:	(RW) Write the lane number to be checked as valid or invalid.
		Read will return the status of PIPE RXVALID signal of the
		selected lane. The default selected lane is Lane0.

What:		/sys/kernel/debug/dwc_pcie_<dev>/rasdes_err_inj/<error>
Date:		February 2025
Contact:	Shradha Todi <shradha.t@samsung.com>
Description:	The "rasdes_err_inj" is a directory which can be used to inject
		errors into the system. The possible errors that can be injected
		are:

		  1) tx_lcrc            - TLP LCRC error injection TX Path
		  2) b16_crc_dllp       - 16b CRC error injection of ACK/NAK DLLP
		  3) b16_crc_upd_fc     - 16b CRC error injection of Update-FC DLLP
		  4) tx_ecrc            - TLP ECRC error injection TX Path
		  5) fcrc_tlp           - TLP's FCRC error injection TX Path
		  6) parity_tsos        - Parity error of TSOS
		  7) parity_skpos       - Parity error on SKPOS
		  8) rx_lcrc            - LCRC error injection RX Path
		  9) rx_ecrc            - ECRC error injection RX Path
		  10) tlp_err_seq       - TLPs SEQ# error
		  11) ack_nak_dllp_seq  - DLLPS ACK/NAK SEQ# error
		  12) ack_nak_dllp      - ACK/NAK DLLPs transmission block
		  13) upd_fc_dllp       - UpdateFC DLLPs transmission block
		  14) nak_dllp          - Always transmission for NAK DLLP
		  15) inv_sync_hdr_sym  - Invert SYNC header
		  16) com_pad_ts1       - COM/PAD TS1 order set
		  17) com_pad_ts2       - COM/PAD TS2 order set
		  18) com_fts           - COM/FTS FTS order set
		  19) com_idl           - COM/IDL E-idle order set
		  20) end_edb           - END/EDB symbol
		  21) stp_sdp           - STP/SDP symbol
		  22) com_skp           - COM/SKP SKP order set
		  23) posted_tlp_hdr    - Posted TLP Header credit value control
		  24) non_post_tlp_hdr  - Non-Posted TLP Header credit value control
		  25) cmpl_tlp_hdr      - Completion TLP Header credit value control
		  26) posted_tlp_data   - Posted TLP Data credit value control
		  27) non_post_tlp_data - Non-Posted TLP Data credit value control
		  28) cmpl_tlp_data     - Completion TLP Data credit value control
		  29) duplicate_tlp     - Generates duplicate TLPs
		  30) nullified_tlp     - Generates Nullified TLPs

		(WO) Write to the attribute will prepare controller to inject
		the respective error in the next transmission of data.

		Parameter required to write will change in the following ways:

		- Errors 9 and 10 are sequence errors. The write command:

		    echo <count> <diff> > /sys/kernel/debug/dwc_pcie_<dev>/rasdes_err_inj/<error>

		    <count>
			    Number of errors to be injected
		    <diff>
			    The difference to add or subtract from natural
			    sequence number to generate sequence error.
			    Allowed range from -4095 to 4095

		- Errors 23 to 28 are credit value error insertions. The write
		  command:

		    echo <count> <diff> <vc> > /sys/kernel/debug/dwc_pcie_<dev>/rasdes_err_inj/<error>

		    <count>
			    Number of errors to be injected
		    <diff>
			    The difference to add or subtract from UpdateFC
			    credit value. Allowed range from -4095 to 4095
		    <vc>
			    Target VC number

		- All other errors. The write command:

		    echo <count> > /sys/kernel/debug/dwc_pcie_<dev>/rasdes_err_inj/<error>

		    <count>
			    Number of errors to be injected