[PATCH v1] clk: imx95-blk-ctl: Fix REFCLK rise-fall mismatch on i.MX95

Peng Fan peng.fan at oss.nxp.com
Tue Apr 28 19:13:36 PDT 2026


On Fri, Apr 17, 2026 at 04:29:10PM +0800, Richard Zhu wrote:
>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 at nxp.com>

Reviewed-by: Peng Fan <peng.fan at nxp.com>



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