[PATCH v2 00/13] TI: K3 DTS: fix USB Clocking for Compliance

Siddharth Vadapalli
2026-05-06T14:08:31Z

Hello,

This series enables Internal Spread Spectrum Clocking (SSC) for USB
SuperSpeed configuration. This is mandated by the USB Specification
section 6.5.3 Normative Spread Spectrum Clocking (SSC).

Series has been posted as individual patches for respective boards since
the Fixes tag is different for each board and needs to be backported via
stable.

Series is based on commit
74fe02ce122a Merge tag 'wq-for-7.1-rc2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
of Mainline Linux.

v1 of this series is at:
https://lore.kernel.org/r/20260505110631.1144200-1-s-vadapalli@ti.com/
Changes since v1:
- Collected Acked-by tag on patch 1 from Josua Mayer <josua@solid-run.com>
- Reordered properties in patches 7, 8, 12 and 13 to have 'status' at the
end of the node based on feedback from Francesco Dolcini <francesco@dolcini.it>

Series has been tested on the following boards:
1. AM642-SK
https://gist.github.com/Siddharth-Vadapalli-at-TI/d4aecc572697bd02bb65a0fe5efea393
2. AM68-SK-Baseboard
https://gist.github.com/Siddharth-Vadapalli-at-TI/371aacaada2b236776455be5fa15e593
3. AM69-SK
https://gist.github.com/Siddharth-Vadapalli-at-TI/1d7c6c3a5cbe6ec2bc966887c3e4d913
4. J721E-Common-Processor-Board
https://gist.github.com/Siddharth-Vadapalli-at-TI/f815f1a9b400ba492133e43c36f69936
5. J721E-SK
https://gist.github.com/Siddharth-Vadapalli-at-TI/0d1e4e72b47ab1482b5b7d1247bc8bfa
6. J722S-EVM
https://gist.github.com/Siddharth-Vadapalli-at-TI/146533f0a89bde59b47ead582a924e62
7. J742S2-EVM
https://gist.github.com/Siddharth-Vadapalli-at-TI/be8ed3e339441b7301f57ad006868238
8. J784S4-EVM
https://gist.github.com/Siddharth-Vadapalli-at-TI/62795430857387491162b21d9c9692d0

Regards,
Siddharth.

Luis Parga (2):
arm64: dts: ti: k3-am642-sk: fix USB clocking for compliance
arm64: dts: ti: k3-j722s-evm: fix USB clocking for compliance

Siddharth Vadapalli (11):
arm64: dts: ti: k3-am642-hummingboard-t: fix USB clocking for
compliance
arm64: dts: ti: k3-am642-phyboard-electra-rdk: fix USB clocking for
compliance
arm64: dts: ti: k3-am642-tqma64xxl: fix USB clocking for compliance
arm64: dts: ti: k3-am68-phyboard-izar: fix USB clocking for compliance
arm64: dts: ti: k3-am68-sk-baseboard: fix USB clocking for compliance
arm64: dts: ti: k3-am69-aquila: fix USB clocking for compliance
arm64: dts: ti: k3-am69-sk: fix USB clocking for compliance
arm64: dts: ti: k3-j721e-beagleboneai64: fix USB clocking for
compliance
arm64: dts: ti: k3-j721e-common-proc-board: fix USB clocking for
compliance
arm64: dts: ti: k3-j721e-sk: fix USB clocking for compliance
arm64: dts: ti: k3-j784s4-j742s2-evm-common: fix USB clocking for
compliance

.../boot/dts/ti/k3-am642-hummingboard-t-usb3.dts | 9 +++++++++
.../boot/dts/ti/k3-am642-phyboard-electra-rdk.dts | 9 +++++++++
arch/arm64/boot/dts/ti/k3-am642-sk.dts | 6 ++++++
.../boot/dts/ti/k3-am642-tqma64xxl-mbax4xxl.dts | 9 +++++++++
arch/arm64/boot/dts/ti/k3-am68-phyboard-izar.dts | 9 +++++++++
arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts | 9 +++++++++
arch/arm64/boot/dts/ti/k3-am69-aquila.dtsi | 6 ++++++
arch/arm64/boot/dts/ti/k3-am69-sk.dts | 6 ++++++
.../arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts | 15 +++++++++++++++
.../boot/dts/ti/k3-j721e-common-proc-board.dts | 6 ++++++
arch/arm64/boot/dts/ti/k3-j721e-sk.dts | 15 +++++++++++++++
arch/arm64/boot/dts/ti/k3-j722s-evm.dts | 6 ++++++
.../boot/dts/ti/k3-j784s4-j742s2-evm-common.dtsi | 6 ++++++
13 files changed, 111 insertions(+)

--
2.51.1