Re: [PATCH v2 09/13] i3c: dw-i3c-master: Add a quirk to skip clock and reset

Akhil R
2026-04-10T06:07:47Z

On Thu, 9 Apr 2026 22:45:09 -0400, Frank Li wrote:
> On Thu, Apr 09, 2026 at 04:27:39PM +0530, Akhil R wrote:
>> Some ACPI-enumerated devices like Tegra410 do not have clock and reset
>> resources exposed via the clk/reset frameworks. Add a match data for
>
> why not export fix clock at ACPI?
>
>> such devices to skip acquiring clock and reset controls during probe.
>>
>> Move match data parsing before clock/reset acquisition so the quirk is
>> available early enough. When the quirk is set, fall back to reading
>> the clock rate from the "clock-frequency" device property instead.
>
> "clock-frequency" is legacy proptery.

The document ACPI on ARMv8 Servers [1] suggests not to use clock or reset
framework at all. I also could not find any proper way to export the clock
to the kernel from the ACPI table. The same document suggests to use only
_DSD properties, if to pass any data to the kernel.

I can rename the property to 'default-clock-rate' if that sounds good.
Please let me know your suggestion.

[1]: https://www.kernel.org/doc/html/v6.1/arm64/arm-acpi.html#programmable-power-control-resources

Best Regards,
Akhil