clk: imx95-blk-ctl: Fix REFCLK rise-fall mismatch on i.MX95

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When the internal PLL is used as the PCIe reference clock source on i.MX95,
a REFCLK rise-fall time mismatch is observed during PCIe Gen1 compliance
testing with the Lfast IO analyzer.

Fix this issue by configuring the IREF_TX field to 0xF (15), which adjusts
the transmitter current reference to meet the PCIe specification timing
requirements.

Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Link: https://patch.msgid.link/20260730090447.271109-1-hongxing.zhu@oss.nxp.com
Signed-off-by: Abel Vesa <abel.vesa@oss.qualcomm.com>

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Richard Zhu 2026-07-30 17:04:47 +08:00 • committed by Abel Vesa

parent 884dfb2dfe

commit 39ec460b56

1 changed files with 7 additions and 0 deletions

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drivers/clk/imx/clk-imx95-blk-ctl.c

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