[PATCH v2 0/4] Add i.MX95 USB3.0 PHY alternate clock support

Xu Yang
2025-10-10T11:01:10Z

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@nxp.com>
---
Changes in v2:
- improve patch #1 commit message
- collect Rb tag
- Link to v1: https://lore.kernel.org/r/20250919-usb-phy-alt-clk-support-v1-0-57c2a13eea1c@nxp.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: a2f12b1cbec103a836e3ddfde57084661591e4f3
change-id: 20250919-usb-phy-alt-clk-support-e54e69ac0780

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