linux-kernel - [PATCH 0/4] Add i.MX95 USB3.0 PHY alternate clock support

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Message-Id: <20250919-usb-phy-alt-clk-support-v1-0-57c2a13eea1c@nxp.com>
Date: Fri, 19 Sep 2025 15:02:56 +0800
From: Xu Yang <xu.yang_2@....com>
To: Vinod Koul <vkoul@...nel.org>, 
 Kishon Vijay Abraham I <kishon@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>, 
 Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>, Li Jun <jun.li@....com>, 
 Abel Vesa <abelvesa@...nel.org>, Peng Fan <peng.fan@....com>, 
 Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>
Cc: linux-phy@...ts.infradead.org, devicetree@...r.kernel.org, 
 imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org, 
 linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org, 
 Xu Yang <xu.yang_2@....com>
Subject: [PATCH 0/4] Add i.MX95 USB3.0 PHY alternate clock support

The i.MX95 USB3.0 PHY supports XTAL 24MHz clock by default as reference
clock and 100MHz clock as alternate reference clock. If the default
reference clock brings USB performance degradation in bad condition, such
as the working temperature is too low or too high, switch to alternate
clock may overcome the degradation. This will add alternate clock support
to enhance the function of USB3.0 PHY.

Signed-off-by: Xu Yang <xu.yang_2@....com>
---
Xu Yang (4):
      dt-bindings: phy: imx8mq-usb: add alternate reference clock
      dt-bindings: clock: nxp,imx95-blk-ctl: add support for USB in HSIO Block Control
      phy: fsl-imx8mq-usb: support alternate reference clock
      clk: imx95-blk-ctl: Add one clock mux for HSIO block

 .../bindings/clock/nxp,imx95-blk-ctl.yaml          |  1 +
 .../bindings/phy/fsl,imx8mq-usb-phy.yaml           |  7 ++++++-
 drivers/clk/imx/clk-imx95-blk-ctl.c                | 19 ++++++++++++++++++
 drivers/phy/freescale/phy-fsl-imx8mq-usb.c         | 23 ++++++++++++++++++++--
 4 files changed, 47 insertions(+), 3 deletions(-)
---
base-commit: a4e143636d5def935dd461539b67b61287a8dfef
change-id: 20250919-usb-phy-alt-clk-support-e54e69ac0780

Best regards,
-- 
Xu Yang <xu.yang_2@....com>