From: Peng Fan <peng.fan@oss.nxp.com>
To: Richard Zhu <hongxing.zhu@nxp.com>
Cc: abelvesa@kernel.org, peng.fan@nxp.com, mturquette@baylibre.com,
sboyd@kernel.org, Frank.Li@nxp.com, s.hauer@pengutronix.de,
festevam@gmail.com, linux-clk@vger.kernel.org, imx@nxp.com,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, kernel@pengutronix.de
Subject: Re: [PATCH v1] clk: imx95-blk-ctl: Fix REFCLK rise-fall mismatch on i.MX95
Date: Wed, 29 Apr 2026 10:13:36 +0800 [thread overview]
Message-ID: <afFl1qBLK/5MTwan@shlinux89> (raw)
In-Reply-To: <20260417082910.489995-1-hongxing.zhu@nxp.com>
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@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
prev parent reply other threads:[~2026-04-29 2:11 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-17 8:29 [PATCH v1] clk: imx95-blk-ctl: Fix REFCLK rise-fall mismatch on i.MX95 Richard Zhu
2026-04-17 9:21 ` Peng Fan
2026-04-17 9:28 ` Hongxing Zhu
2026-04-20 6:44 ` Hongxing Zhu
2026-04-29 2:13 ` Peng Fan [this message]
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