[PATCH v2 0/6] cpufreq: ti: Fix probe ordering and add device link support for K3 SoCs

Akashdeep Kaur
2026-04-01T10:54:33Z

For K3 SoCs, ti-cpufreq depends on k3-socinfo to provide SoC revision
information via soc_device_match(). If ti-cpufreq probes before
k3-socinfo, soc_device_match() returns NULL, causing incorrect
revision detection and OPP table initialization failures.

Add EPROBE_DEFER handling in ti-cpufreq when soc_device_match() fails
for K3 SoCs, ensuring k3-socinfo probes first.

Add device link support via a new DT property "ti,soc-info" in CPU
OPP tables. Device links prevent unbinding k3-socinfo while
ti-cpufreq is using it.

EPROBE_DEFER handles first-boot probe ordering, while device links
provide runtime dependency management.

For backward compatibility, the DT property is optional.

Changes in v2
- Added DT bindings documentation for ti,soc-info property
- Reordered patches: bindings first, then driver changes, then DTS
- Link to v1: https://lore.kernel.org/all/20260330120105.2985200-1-a-kaur@ti.com/

Testing
- Verified correct probe ordering on AM625, AM62A7, AM62P5 platforms

Signed-off-by: Akashdeep Kaur <a-kaur@ti.com>
---

Akashdeep Kaur (6):
cpufreq: ti: Add EPROBE_DEFER for K3 SoCs
dt-bindings: opp: ti-cpu: Add ti,soc-info property
cpufreq: ti: Add device link to k3-socinfo
arm64: dts: ti: k3-am625: Add ti,soc-info to OPP table
arm64: dts: ti: k3-am62a7: Add ti,soc-info to OPP table
arm64: dts: ti: k3-am62p5: Add ti,soc-info to OPP table

.../opp/operating-points-v2-ti-cpu.yaml | 11 ++++
arch/arm64/boot/dts/ti/k3-am625.dtsi | 1 +
arch/arm64/boot/dts/ti/k3-am62a7.dtsi | 1 +
arch/arm64/boot/dts/ti/k3-am62p5.dtsi | 1 +
drivers/cpufreq/ti-cpufreq.c | 61 +++++++++++++++++++
5 files changed, 75 insertions(+)

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2.34.1