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| author | Richard Zhu <hongxing.zhu@nxp.com> | 2025-04-16 16:13:12 +0800 |
|---|---|---|
| committer | Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> | 2025-04-27 17:14:19 +0530 |
| commit | 744a1c20ce933dcaca0f161fe7da115902a2f343 (patch) | |
| tree | e98be9963d9be30a158a8eb62ba4f1f452d2b7d0 /tools/perf/scripts/python/exported-sql-viewer.py | |
| parent | ce0c43e855c7f652b6351110aaaabf9b521debd7 (diff) | |
PCI: imx6: Add workaround for errata ERR051586
ERR051586: Compliance with 8GT/s Receiver Impedance ECN.
The default value of GEN3_RELATED_OFF[GEN3_ZRXDC_NONCOMPL] is 1 which
makes receiver non-compliant with the ZRX-DC parameter for 2.5 GT/s when
operating at 8 GT/s or higher. It causes unnecessary timeout in L1.
So the workaround is to set GEN3_RELATED_OFF[GEN3_ZRXDC_NONCOMPL] to 0.
Add this workaround in the dw_pcie_host_ops::post_init() callback for
i.MX95 platforms.
Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
[mani: subject and description rewording]
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://patch.msgid.link/20250416081314.3929794-6-hongxing.zhu@nxp.com
Diffstat (limited to 'tools/perf/scripts/python/exported-sql-viewer.py')
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